Analogue Meters With Moving - Iron Movement - DE DE 48 DE 72 DE 96 DE 144 Data Sheet Analogue Meters with Moving - Iron Movement Tel. +91 253 22216, 22222 Fax +91 253 235164 E-mail India - marketing@rishabh.co.in International - exp.marketing@rishabh.co.in Rishabh Instruments 1 / 1 / I / I / 117
Analogue Meters With Moving - Iron Movement - DE Movement Moving iron movement has pivots of very high hardness.movement is suspended between spring loaded saphire jewels. Movement is critically damped by use of silicon oil Application The moving iron, panel meters,de 48/72/96/144 housed in moulded polycarbonate cases are suitable for the measurement of AC currents and voltages in the usual frequency range of 15...1Hz. Moving iron meters indicate rms-values practically independent of waveform even of high harmonic. Error of indication may occur for extreme waveforms (e.g. phase gating controls) & for frequencies above 1kHz. waveforms ( e.g. phase gating controls) and for frequencies above 1kHz. These meters offer several advantages in switchboards and Generating Set Panels. Number of meters can be mounted in a single Cut out (Mosaic mounting). For CT operated ammeters, dials can be fitted based on CT ratio. Front window glass and bezel can be easily replaced. Applicable Standards Nominal case and cutout dimensions for IS 2419 indicating Electrical instruments DIN 437 Scale and pointer for electrical measuring IS 1248 instruments DIN 4382 Connections and Terminal markings for IS 1248 panel meters DIN 4387 Terminal bolts / leads. DIN 462/46282 Safety requirements and protecti ve IS 9249-1979 measures for Electrical indicating. DIN 45/8-7, instruments and their accessories. VDE 11/ 11-72 VDE 41/ 1-76 IEC 529, IEC 11 Performance specifications for direct IS 1248 acting indicating analogue electrical IEC51/DINEN651 measuring instruments and their accessories DIN 4371 Environmental conditions IS 1248 IS 9, Part 5, 7, 8, VDE / VDI 354 Front frames for indicating measuring DIN 43718 instruments Principle dimensions UL Combustibility Class UL 94 V- Comply with following European directives Scale and Pointer Pointer Pointer deflection Scale characteristics Scale division Scale length over range Ammeters voltmeters for use on Voltage transformer Scale Interchangeability Knife - edge pointer...9 Near Linear above 1% of nominal full Scale value Coarse - fine De48 De72 DE96 DE144 41 mm 61mm 97mm 146 mm 2 times nominal current 1.2 times nominal voltage Interchangeable 89 / 336 / EEC (EMC Directive), 73/23/EEC (low voltage directive) & ammemdment 93/68/eec, for CE Marking Mechanical Data Case details Moulded square case suitable for mounting in Control / Switchgear panels, Machinery consoles. Case material Glass filled polycarbonate, flame retardant and drip proof as per UL 94 V-. Glass Electrical Data Measured quantity Power consumption voltmeters Ammeters < 15A Ammeters > 15A Overload capacity Continuously Short duration Voltmeters AC voltage or current < 4.5VA <.5VA <.8 VA (acc. to IS 1248 / IEC 51) 1.2 times rated voltage /current max 1V,upto max 5 seconds. Ammeters DE 48 DE 72/96/144 5 s max. 1 times(2 A max). 1 times 1 s max -- 4 times(25 A max.) Enclosure code (IEC 529) Insulation class Rated insulation voltage Proof voltage Installation category Insulation resistance Black Vertical Panel fixing Swivel screws Mounting Stackable in a single cutout Panel thickness < 4 mm Terminals Voltmeters and Hexagon studs, M4 screws and ammeters <= 3A wire clamps E3 (DIN 46282) Ammeters > 3A Ammeters > 6A Reference Conditions Accuracy class Reference conditions Ambient temperature Input Waveform Frequency Other conditions Threaded studs M6 with nuts Threaded Studs M8 with Nuts. 2 times rated voltage IP 52 case IP for terminals without back cover IP 2 for terminals with back cover Group A according to VDE 11 DE 48 66V DE72/96/144 1V DE 48 2kV DE72/96/144 3kV 6 V CAT III (IEC 11) > 5 Mohm at 5 V d.c 1.5 according to IS 1248 (IEC 51/ DIN EN 651) 23 C + 2 Nomial position + 1 Rated value of measured quantity sine wave,distortion factor <= 5 % 45...65HZ IS 1248 (IEC 51/ DIN EN 651) Tel. +91 253 22216, 22222 Fax +91 253 235164 E-mail India - marketing@rishabh.co.in International - exp.marketing@rishabh.co.in Rishabh Instruments 1 / 1 / I / I / 117
Analogue Meters With Moving - Iron Movement - DE Nominal Range of Use Ambient Temperature Frequency External magnetic field Environmental Conditions...5 o C o Vertical + - 5 15...1Hz (Voltage) 15...4Hz (current) At.4 ka/m,less than 6 % of fiducialvalue (not as a percentage class index) Climatic suitability Climate category II as per IS 1248 (climatic class 3 according to VDE/VDI 354) Operating temperature - 1... + 55 C Storage temperature - 25... + 65 C Relative humidity < 75% annual average, non-condensing Shock resistance Vibration resistance 15g. 11 ms 1.5 g at about 5 Hz Standard Measuring Ranges A. C. Voltage 6V 1V 15V 1mA 15mA 25mA 25 V 4mA 4 V 6mA 6 V 1A 1V 1.5A 12 V 2.5A 132 V 3A 15 V 4A 2 V 5A 25 V 6A 3 V 1A 4V 15A 5 V 2A 6 V 25A 75 V (except DE 48) 3A For use on voltage transformer A. C. Current 4A 5A 6A.../1V secondary 1A (except DE 48) Options Case Antiglare glass Red, Yellow,Blue, White Red index pointer Front adjustable on site o o on request 15...165 Dial Blank dial Special markings Division dials Colour markings/bands Over range (ammeters) Accessories Safety Terminal Protection Safety Precautions With initial and end values marked. Numbering / Lettering. Basic divisions without numbering. Red or green No over range or 6 times over range over nominal current Full sized polycarbonate back cover to provide protection against accidental contact ( hand and fingers ) acc.to IS 9249, VDE 41. 1) Instruments with damaged bezels or window glasses must be disconnected from the mains. 2) Adequate safety clearance must be maintained to control panel fasteners and to sheet metal housing. If non - insulated connector wires are used. 3) The back cover must be snapped into place after connector wires have been clamped for protection against accidental contact. 4) Scales may only be replaced under voltage - free conditions. 5) Bezels and window glasses may only be replaced under voltage - free Conditions..../11 V secondary for use on current transformer.../1a secondary or.../5a secondary Rishabh Instruments Tel. +91 253 22216, 22222 Fax +91 253 235164 E-mail India - marketing@rishabh.co.in International - exp.marketing@rishabh.co.in 1 / 1 / I / I / 117
Analogue Meters With Moving - Iron Movement - DE Connections Ordering Information Type DE Moving-iron panel meter AC Voltage (Direct connected) L1 N(L2) 17 18 Front dimension 48 72 96 144 Over range (ammeters) Measuring Ranges 48 mm x 48 mm 72 mm x 72 mm 96 mm x 96 mm 144 mm x 144 mm no over range * 3 2 times nominal current * 1, 6 times nominal current Refer to table inside AC Current (Direct connected) L1 17 18 Terminal protection Panel Fixing Red Index Pointer full sized polycarbonate backcover Swivel Screw None * 1 N(L2) Normal glass Antiglare glass AC Current (for use on current Transformer) 17 18 Black Red,Blue,Yellow,White L1 N(L2) Dimensions For Voltmeters & ammeters upto 3 A k k l L For ammeters > 3 A Dial Logo Vertical On request 15... 165 Standard scale same as measuring range Blank dial with division Additional lettering on request Additional numbering on request Coloured marking red or green Coloured sector red or green RISHABH standard Please clearly add the desired specifications while ordering Ordering example Dimensions (in mm) DE 48 DE 72 DE 96 DE 144 Bezel a 48 72 96 144 Case b 43.5 66 9 136 Depth c 53 53 53 53 X d 44.5 67.5 91.5 137.5 e 5.5 5.5 5.5 5.5 Cotout Size 45 68 92 +.8 138 +1 Depth with X X Back cover f 64 64 64 X c=62mm,for I > 3A & up to 6A 64 c = 67 mm, for I > 6 A X f=69.5mm, for I > 6 A X X f=75mm, for DE 48 I > 3 A X X Weight (approx.).1 kg..16 kg..2 kg..4 kg. DE 72 Measuring range 15 V, dial - 1% Specifications are subject to change without notice(2/9) Tel. +91 253 22216, 22222 Fax +91 253 235164 E-mail India - marketing@rishabh.co.in International - exp.marketing@rishabh.co.in Rishabh Instruments 1 / 1 / I / I / 117
DC Ammeter, Voltmeter - DS DS DS DS DS 48 72 96 144 U Data Sheet Analogue Meters with Moving - coil Movement Rishabh Instruments Tel. +91 253 22216, 22222 Fax +91 253 235164 E-mail India - marketing@rishabh.co.in International - exp.marketing@ridhabh.co.in 1 / 1 / I / II / 117
DC Ammeter, Voltmeter - DS Application The moving coil panel meters, DS 48/72/96/144 housed in moulded polycarbonate cases are suitable for the measurement of DC currents and voltages. These instruments offer several advantages in switchboards and Generating Set Panels. Number of meters can be mounted in a single Cut out (Mosaic mounting). Front glass, Bezel & Dial can be easily replaced. Movement Moving coil movement has pivots of very high hardness. Movement is suspended between spring loaded saphire jewels. Movement is properly shielded & critically damped by eddy currents induced in coil former. Mechanical Data Case details Moulded square case suitable for mounting in Control / Switchgear panels, Machinery consoles. Case material Glass filled polycarbonate, flame retardant and drip proof as per UL 94 V-. Glass Colour of bazel Black Vertical Panel fixing Swivel screws Mounting Stackable in a single cutout Panel thickness < 4 mm Terminals Voltmeters and ammeters <6A Ammeters >6A Ammeters >6A Electrical Data Hexagon studs, M4 screws and wire clamps E3 (DIN 46282) Threaded studs M6 with nuts Threaded studs M8 with nuts Measured quantity Overload capacity DC voltage or current (acc. to IS 1248 / IEC 51) Continuously Short duration 1.2 times rated voltage /current 2 times rated voltage,5 s Max 1 times rated current,5 s Max Enclosure code IP 52 case (IEC 529) IP for terminals without back cover IP 2 for terminals with back cover Insulation class Group A according to VDE 11 Rated DS 48 DS 72/96/144 66 V 1V Proof volta ge 2kV 3kV Installation catagory 6 V CAT III (IEC 11) Insulation resistance > 5 Mohm at 5 V d.c. *4 Accuracy class 2.5 *5 Not applicable for DS 144 *6 Total lead resistance of.35 ohm is considered for mv ranges while calibration. *7 Not applicable for DS 48 Rishabh Instruments Standard Measuring Ranges D. C. Voltage Rated Value Approx Voltage drop *4 *5 15uA *4 *5 25uA *4 4 ua *4 5 ua *4 6 ua 1 ua 15 ua 25 ua 4 ua 5 ua 6 ua 1 ma 1.5 ma 2.5 ma 4 ma 5 ma 6 ma 1 ma 15 ma 2 ma 25 ma 4 ma 6 ma 1 ma 15 ma 25 ma 4 ma 6 ma 1 A 1.5 A 2. 5 A 4 A 5 A 6 A 1 A 15 A 2 A 25 A 3 A 4 A 6 A *7 1 A For use on transducer 4-2 ma Scale and Pointer 14 mv 24 mv 374 mv 424 mv 6 mv 4 mv 6 mv 14 mv 54 mv 54 mv 54 mv 37 mv 196 mv 196 mv 196 mv 196 mv 196 mv 196 mv 11 mv 72 mv 72 mv Tel. +91 253 22216, 22222 Fax +91 253 235164 E-mail India - marketing@rishabh.co.in International - exp.marketing@ridhabh.co.in Rated Value D. C. Voltage *5 15 mv *5 25 mv 4 mv 5 mv 75 mv 1 mv 15 mv 25 mv 4 mv 6 mv 1 V 1.5 V 2.5 V 4 V 6 V 1 V 15 V 25 V 3 V 4 V 5 V 6 V 1 V 15 V 2 V 25 V 3 V 4 V 5 V 6 V For use on external shunt * 6 * 6 75 mv * 6 15 mv 3.33kohm/V 3.33kohm/V 3.33kohm/V 3.33kohm/V 1 Kohm/V Pointer Knife - edge pointer Pointer deflection...9 Scale characteristics linear Scale division Coarse - fine Scale length DS 48 DS 72 DS 96 DS 144 41 mm 63 mm 97 mm 146 mm Scale Interchangeability Interchangeable Accuracy at Reference Conditions Sensitivity ( + -1%) Accuracy class 1.5 according to IS 1248 Reference conditions (IEC 51/ DIN EN 651) Ambient temperature 23 C + 2 C Nomial position + 1 Input Rated value of measured quantity Other conditions IS 1248 (IEC 51/ DIN EN 651) Nominal range of use Ambient temperature...5 C Vertical + 5 External magnetic field.5 mt 1 / 1 / I / II / 117
DC Ammeter, Voltmeter - DS Environmental Conditions Climatic suitability Climate category II as per IS 1248 (climatic class 3 according to VDE/VDI 354) Operating temperature - 1... + 55 C Storage temperature - 25... + 65 C Relative humidity < 75% annual average, non-condensing Shock resistor 15g, 11ms Vibration resistor 1-15-1 Hz /.15mm 1.5 g at about 5 Hz. Applicable Standards Nominal case and cutout dimensions for indicating Electrical instruments Scale and pointer for electrical measuring instruments Connections and Terminal markings for panel meters Terminal bolts / leads. Clamp straps for connections Safety requirements and protective measures for Electrical indicating. instruments and their accessories., Options Case Antiglare glass Red, Yellow, Blue, White. Red index pointer Front adjustable on site on request...18 Dial Blank dial With initial and end values marked. Special markings Numbering / Lettering. Division dials Basic divisions without numbering. Colour markings/bands Red or green Rishabh Instruments IS 2419 DIN 437 IS 1248 DIN 4382 IS 1248 DIN 4387 DIN 462/46282 DIN 46282 IS 9249 DIN 45/8-7, VDE 11/ 11-72 VDE 41/ 1-76 IEC 529, IEC 11 Performance specifications for direct acting indicating analogue electrical IS 1248 IEC 51/DIN EN 651 measuring instruments & their accessories DIN 4371 Environmental condition IS 1248 IS 9, Part 5, 7, 8, VDE / VDI 354 Front frames for indicating measuring instruments Principle dimensions DIN 43718 UL Combustibility Class UL 94 V- Technical conditions of delivery for electrical instruments Mechanical strength (Free fall test, vibration test) DIN 4371 IS 1248 IS 9 VDE 411, part 1, Sec. 43/44, IEC 11 Comply with following European directives 89 / 336/ EEC (EMC directive),73/23/eec(low voltage directive)& amendment 93/68/EEC, for marking. Others Zero position Increased sensitivity Adjustment of Resistance (Sensitivity) Accessories Safety Terminal protection Full sized polycarbonate back cover to provide protection against accidental contact (hand and fingers) acc.to IS 9249,VDE 41. Connections DC voltage DC current Dimensions Tel. +91 253 22216, 22222 Fax +91 253 235164 E-mail India - marketing@rishabh.co.in International - exp.marketing@ridhabh.co.in L + L - L + L - 17 18 17 18 For Voltmeter & Ammeter < 6A For Ammeter 6-1 A Dimensions DS 48 DS 72 DS 96 DS 144 (in mm) Bezel a 48 72 96 144 Case b 43.5 66 9 136 Depth c* 53 53 53 53 d 44.5 67.5 91.5 137.5 e 5.5 5.5 5.5 5.5 Cutout size 45 +.6 68 +.7 92 +.8 138 +1 weight(approx).13kg.18kg.22kg.43kg Depth with 64 64 64 64 back cover f** * c = 68mm, for I= 6 to 6 A * c = 78mm, for I> 6 A ** f = 7mm, for I= 6 to 6 A ** f = 75mm, for DS 48, I >6A Centre zero or off-set zero 4kohm/V for voltmeters 1...6V 1 kohm/v for Voltmeters 15..15V Within + 1% at 23 C X 1 / 1 / I / II / 117
DC Ammeter, Voltmeter - DS Ordering Information Type DS Moving-coil panel meter Front dimension 48 48mm x 48 mm 72 72 mm x 72 mm 96 96 mm x 96 mm 144 144 mm x 144 mm Measuring ranges refer to table inside Normal glass Antiglare glass Black Red,Blue,Yellow,White Vertical on request...18 Terminal protection Full sized polycarbonate back cover Zero position Centre, Off-set zero Increased sensitivity 4 kohm/v for voltmeters 1...6 V 1 kohm /V for voltmeters 15...15 V Adjustment Resistance Within + 1 % at 23 C (Sensitivity) Dial Standard scale same as measuring range, Blank dial with division Additional lettering on request Additional numbering on request Coloured marking red or green Coloured sector red or green Logo RISHABH, for Indian Sales C.G. * 1, for export through Crompton Greaves. I.D. Others Safety Precautions * Instruments with damaged bezels or window glasses must be disconnected from mains. * Adequate safety clearance must be maintained to control panel fasteners and to sheet metal housing, if non-insulated connector wires are used. * The back cover must be snapped into place after the connector wires have been clamped for protection against accidental contact. * Scales should be replaced under Voltage- free conditions. * Bezels and window glasses should be replaced under Voltage - free conditions. Ordering example standard Please clearly add the desired specifications while ordering DS 72 measuring range... 2 ma, dial with...1 C, red mark at 37 C. Specifications are subject to change without notice (2/9) Rishabh Instruments Tel. +91 253 22216, 22222 Fax +91 253 235164 E-mail India - marketing@rishabh.co.in International - exp.marketing@ridhabh.co.in 1 / 1 / I / II / 117
Analogue Maximum Demand Ammeters with Bimetallic Movement, Combined Bimetallic and Moving - Iron Ammeter BM 72 BM 96 EB 72 EB 96 Data Sheet Analogue Maximum Demand Ammeters with Bimetallic Movement, Combined Bimetallic and Moving - Iron Ammeter Tel. +91 253 22216, 22222 Fax +91 253 235164 E-mail India - marketing@rishabh.co.in International - exp.marketing@rishabh.co.in Rishabh Instruments 1 / 1 / I / VII / 117
Analogue Maximum Demand Ammeters with Bimetallic Movement, Combined Bimetallic and Moving - Iron Ammeter Application The maximum demand ammeters BM/EB 72/96 housed in moulded polycarbonate cases,monitor the most economic use of transformer stations & LT distribution feeders by indicating the thermal/time characteristics of the load. The high torque of the thermal movement drive a red slave pointer linked to the instrument pointer. The slave pointer will remain at the maximum value reached for a subsequent reading until being manually reset by a sealable reset knob to the position of the instrument pointer. Where the instantaneous and maximum demand currents are required, the EB 72/96 instrument,which combines a thermal bimetallic and a moving - iron movement in the same case mounted diagonally opposite to each other. These instruments are suitable for frequency range of 15-4Hz. These meters offer several advantages in Switchboard and Generating Set panels. Number of meters can be mounted in a single Cut out (Mosaic Mounting). The bezel, front window glass and dial can be easily replaced Applicable Standards Nominal case and cutout dimensions for IS 2419 indicating measuring instruments DIN 437 Scale & pointer for electrical measuring IS 1248 instruments DIN 4382 Connections and Terminal markings for IS 1248 panel meters DIN 4387 Terminal bolts / leads. DIN 462/46282 Clamp straps for connections DIN 46282 Safety requirements for Electrical IS 9249 indicating instruments and their accessories. DIN 45 / 8-7, VDE 11 / 11-72 VDE 41 / 1-76 IEC 529, IEC 11 Performance specifications for direct IS 1248 acting indicating analogue electrical IEC51/DINEN651 measuring instruments & their accessories DIN 4371 Environmental conditions IS 1248 IS 9, Part 5, 7, 8, VDE / VDI 354 Front frames for indicating measuring DIN 43718 instruments Principle dimensions UL Combustibility Class UL 94 V- Technical conditions of delivery for DIN 4371 electrical instruments Mechanical strength (Free fall test, IS 1248, IEC 51, vibration test) IS 9 VDE 411, Part 1, Sec. 43/44, IEC 11. Comply with following European directives 89 / 336 / EEC (EMC directive), 73/23/EEC (low voltage directive) & amendment 93/68/EEC, For Marking. Scale and Pointer Pointer Pointer deflection Scale characteristics Over range Scale division Scale length Mechanical Data Case details Case material Panel fixing Mounting Panel thickness Terminals Electrical Data Measuring quantity Thermal time delay (blimetalic) Power consumption 1 A rated current 5 A rated current Continuously Short duration Enclosure code (IEC 529) Tel. +91 253 22216, 22222 Fax +91 253 235164 E-mail India - marketing@rishabh.co.in International - exp.marketing@rishabh.co.in Knife - edge pointer...9 Bimetallic quadratic moving - iron near linear bimetallic moving - iron 1.2 times rated- 2 times rated- -current -current Coarse - fine EB 72 Bimetallic Moving - iron 52 mm 61 mm BM 72 Bimetallic --- 61 mm EB 96 Bimetallic Moving - iron 71 mm 97 mm BM 96 Bimetallic --- 97 mm Moulded square case suitable for mounting in Control/Switchgear panels, Machinery consoles. Glass filled polycarbonate, flame retardant and drip proof as per UL 94 V-. Glass Black Vertical Swivel screws Stackable in a single cutout < 4 mm Hexagon studs, M4 screw and wire clamps E3 Rishabh Instruments 1 / 1 / I / VII / 117 AC currents 15 minutes (8 min / 2 min on request) Response time (moving iron) Approx 1s BM 96 < 1.6 VA < 2.5 VA Overload capacity (acc to IS 1248 / IEC 51) EB 96 < 2.5 VA < 3.4 VA 1.2 times rated current 1 times rated current, 1 sec max. Saturating current transformers shall be used to protect the movement against overload exceeding specified overload rating. IP 4 case IP for terminals without backcover IP 2 for terminals with backcover Insulation class Group A according to VDE 11 Rated insulation voltage 1V Proof voltage testing 3 kv Installation category 3 V CAT III (IEC 11) Insulation resistence > 5 Mohm at 5 V d. c.
Analogue Maximum Demand Ammeters with Bimetallic Movement, Combined Bimetallic and Moving - Iron Ammeter Accuracy at Reference Conditions Accuracy class acc to IS 1248/ IEC 51/DIN EN 651 Reference conditions Ambient temperature 23 C + 2 C Input Frequency Nomial position +1 Rated value of current 45...65HZ Other conditions As per IS1248 (IEC 51/ DIN EN 651) Options Case Antiglare glass Black on request 15...165 Dial Blank dial Special markings Division dials Colour markings/band s 3 (bimetallic movement referred to slave pointer) 1.5 (moving - iron movement) Nominal range of use Ambient temperature ----5 C Nominal position + 5% External magnetic field.5 mt Frequency 15-4Hz. Nominal Range of Use Bimetallic Moving - Iron For use on CT (EB 96 /72) 1 A 5 A 1 A 5 A Environmental Conditions With initial and end values marked. Numbering / Lettering. Basic divisions without numbering. Red or Green ----/ 1 A ----/ 5 A Climatic suitability Climatic class 3 according to VDE/VDI 354 Operating temperature Storage temperature Relative humidity Shock resistance Vibration resistance Others Calibrati on Thermal time delay - 1... + 55 C - 25... + 65 C < 75% annual average, non-condensing 15g. 11 ms 1-15 1Hz/.15mm 1.5 g at about 5 Hz For other frequencies 15Hz...4 Hz. 8 min. Accessories Safety Terminal Protection Full sized polycarbonate back cover, to provide protection against accidental contact ( hand and fingers ) acc. to IS 9249, VDE 41. Saturating current transformer Saturating transformer accuracy class 3, 5 Hz to protect the movements against continuous overloads. Functional Principle The thermal bimetallic movement indicates the mean rms value over 15 minutes (optional 8 min & 2 min.) and deflects a resettable red slave pointer which shows the maximum value reached. Bimetallic instruments have a specific inertia due to their thermal time lag making these instruments especially suitable to indicate maximum demands or to control long - lasting peak loads. For the measurement of instantaneous rms values, a moving - iron movement with pivot suspension, spring loaded shock absorbing jewel bearing and silicon oil damping is incorported. The moving - iron movment has a response time of approx 1s. Dimensions Dimensions (in mm) Bezel a 72 Case b 66 Depth c 53 BM 72 BM 96 EB 72 EB 96 d 67.5 e 5.5 Cutout 68 +.7 Weight (approx.) d b Depth with Back cover 64.22 kg. f 96 9 53 c 91.5 5.5 92 +.8.26 kg. 64 e 72 66 53 a 67.5 5.5 68 +.7.26 kg. 64 96 9 53 91.5 5.5 92 +.8.3 kg. 64 Tel. +91 253 22216, 22222 Fax +91 253 235164 E-mail India - marketing@rishabh.co.in International - exp.marketing@rishabh.co.in Rishabh Instruments 1 / 1 / I / VII / 117
Analogue Maximum Demand Ammeters with Bimetallic Movement, Combined Bimetallic and Moving - Iron Ammeter Connections Ordering Information Direct - connected L1 N(L2) For use on current Transformer L1 N(L2) Safety Precautions 17 18 17 18 1) Instruments with damaged bezels or window glasses must be disconnected from the mains. 2) Adequate safety clearance must be maintained to control panel fasteners and to sheet metal housing. Id non-insulated connector wires are used. 3) The back cover must be snapped into place after connector wired have been clamped for protection against accidental contact. 4) Scales may only be replaced under voltage-free conditions. 5) Bezels and window glasses may only be replaced under voltagefree Conditions. K k l L X X Type Front dimension Measuring Ranges Dial Logo BM 72/96 EB 72/96 Over range Moving Iron- Bimtal movment- Moving iron & bimetal Calibration Calibration Terminal protection Saturating current transformer Maximum demand indicator with bimetallic movement Maximum demand indicator with bimetallic movement 72 mm x 72 mm 96 mm x 96 mm 1 A 5 A --- /1 A for use on Current transformer --- /5A for use on Current transformer Normal glass Antiglare glass Black Red, Blue, Yellow, White Vertical On request 15... 165 Standard scale same as measuring range Blank dial without division Additional lettering on request Additional numbering on request Coloured marking red or green Coloured sector red or green 2 times rated current 1.2 times rated current 1.2 times rated current 5 Hz For frequency 15-4 Hz 15 min. 8 min. 2 min. RISHABH Full sized polycarbonate back cover Without ESW 1/5A, 4.25 VA ESW 5/5A. 4.25 VA standard Please clearly add the desired specifications while ordering Ordering example EB 96 for use on current transformer 3/5A thermal time delay 15 min. Specifications are subject to change without notice(2/9) Tel. +91 253 22216, 22222 Fax +91 253 235164 E-mail India - marketing@rishabh.co.in International - exp.marketing@rishabh.co.in Rishabh Instruments 1 / 1 / I / VII / 117
Analogue Pointer - Type Frequency Meter FM 48 FM 72 FM 96 FM 144 Data Sheet Analogue Pointer - Type Frequency Meter Tel. +91 253 22216, 22222 Fax +91 253 235164 E-mail India - marketing@rishabh.co.in International - exp.marketing@rishabh.co.in Rishabh Instruments 1 / 1 / I / IV / 117
Analogue Pointer - Type Frequency Meter Application The pointer type frequency meters, FM 48/72 / 96/144 housed in moulded polycarbonate cases are suitable for the measurement of frequencies in the range of 45 to 45 Hz. For maximum accuracy, the essential measuring range is obtained by supressing the unwanted frequency span. These instruments offer several advantages in switchboard and Generating Set Panels. Number of meters can be mounted in a single Cut out (Mosaic mounting). Front glass, Bezel & Dial can be easily replaced. Functional Principle Frequencies are measured with a built in electronic transducer & moving coil indicator. Moving coil movement has pivots of very high hardness. Movement is suspended between spring loaded saphire jewels. Movement is properly shielded & critically damped by eddy currents induced in coil former. Electrical Data Mechanical Data Case details Case material Panel fixing Mounting Panel thickness Terminals Moulded square case suitable for mounting in Control / Switchgear panels. Machinery consoles. Glass filled polycarbonate, flame retardant and drip proof as per UL 94 V-. Glass Black Vertical Swivel screws Stackable in a single cutout < 4 mm Hexagon studs, M4 screws And wire clamps E3 Standard Measuring Ranges Frequency Range Rated input voltage Scale and Pointer Pointer 38...4...42 Hz Pointer deflection...9 45...5...55 Hz 48...5...52 Hz 45...55...65 Hz 55...6...65 Hz 58...6...62 Hz 18...2...22 Hz 36...4...44 Hz 57.7 V 63.5V 1 V 11 V 115 V 12 V 127 V 28 V 22 V 23 V 24 V 289 V 38 V 4 V 415 V 44 V 44 V Knife - edge pointer Scale characteristics linear * Scale Division Coarse - fine Scale length FM 48 FM 72 FM 96 FM 144 41mm 63 mm 97mm 146 mm Electrical Data Measured quantity Frequency Input quantity Alternating voltage in sine waveform Overload capacity (acc. to IS 1248 / IEC 51) Continuously 1.2 times rated voltage Short duration 2 times rated voltage,5 sec Enclosure code IP 52 case (IEC 529) IP for terminals without back cover IP 2 for terminals with back cover Insulation class Group A according to VDE 11 Rated insulation voltage 66V Proof voltage 2KV Installation catagory 6 V CAT III Insulation resistance Power consumption Rishabh Instruments > 5 Mohm at 5 V d.c <=7VA. Accuracy at Reference Conditions Accuracy class.5 according to IS 1248 (IEC 51/ DIN EN 651) Reference conditions Ambient temperature o 23 C + o 2 C Nomial position + 1 o Input Rated Value of measured quantity Other conditions Preheating time Nominal range of use Ambient temperature External magnetic field Voltage Tel. +91 253 22216, 22222 Fax +91 253 235164 E-mail India - marketing@rishabh.co.in International - exp.marketing@rishabh.co.in IS 1248 (IEC 51/ DIN EN 651) >= 5 min o...5 C Nominal position + 5 o.5 mt Rated Voltage + 2 % 1 / 1 / I / IV / 117
Analogue Pointer - Type Frequency Meter Environmental Conditions Climatic suitability Climate category II as per IS 1248 (climatic class 3 according to VDE/VDI 354) o Operating temperature - 1... + 55 C Storage temperature - 25... + 65 o C Relative humidity < 75% annual average, non-condensing Shock resistance 15g, 11ms Vibration resistance 1-15-1 Hz /.15mm 1.5 g at about 5 H z. Applicable Standards Nominal case and cutout dimensions for IS 2419 indicating Electrical instruments DIN 437 Scale and pointer for electrical measuring IS 1248 instruments DIN 4382 Connections and Terminal markings for IS 1248 panel meters DIN 4387 Terminal bolts / leads. DIN 462/46282 Clamp straps for connections DIN 46282 Safety requirements and protective IS 9249 measures for Electrical indicating. DIN 45/8-7, instruments and their accessories. VDE 11/ 11-72 VDE 41/ 1-76 IEC 529, IEC 11 Performance specifications for direct IS 1248 acting indicating analogue electrical IEC51/DINEN651 measuring instruments and their accessories DIN 4371 Environmental conditions IS 1248 IS 9, Part 5, 7, 8, VDE / VDI 354 Front frames for indicating measuring DIN 43718 instruments Principle dimensions UL Combustibility Class UL 94 V- Technical conditions of delivery for DIN 4371 electrical instruments Mechanical strength (Free fall test, IS 1248 / IEC 51 vibration test) IS 9 VDE 411, part 1, Sec. 43/44, IEC 11 E M C compliance as per following standards E N 581-2,EN 582-2,N 5511/CISPR 11, EN 6555-2,IEC 555-2 EN 61-4-4/IEC 1-4-4, EN 61-4-2/IEC 1-4-2, EN 61-4-5/IEC 1-4-5,ENV 514. comply with following european directives 89/336/EEC (EMC directive), 73/23/EEC(low voltage directive) & amendment 93/68/EEC, for CE marking. Options Case Red index pointer Dial Blank dial Special markings Division dials Colour markings/bands Rishabh Instruments Antiglare glass Red,Yellow,Blue,White. Front adjustable on site on request o...18 o With initial and end values marked. Numbering / Lettering. Basic. divisions without numbering. Red or green Accessories Safety Terminal Protection Full sized polycarbonate back cover to provide protection against accidental contact (hand and fingers) acc.to IS 9249, VDE 41. Connections L1 N(L2) Dimensions d Dimensions (in mm) Bezel Case b a b Depth c* d e Cutout Size Depth with Back cover f ** Weight (approx.) 17 18 c f FM48 48 43.5 53 44.5 5.5 45 +.6 64.15 kg. Tel. +91 253 22216, 22222 Fax +91 253 235164 E-mail India - marketing@rishabh.co.in International - exp.marketing@rishabh.co.in FM72 72 66 53 67.5 5.5 68 a e FM96 96 9 53 91.5 5.5 +.7 +.8 92 64 64.21 kg..28 kg. FM144 144 136 53 137.5 5.5 138 +1 64.49 kg. 1 / 1 / I / IV / 117
Analogue Pointer - Type Frequency Meter Ordering Information Safety Precautions Type FM Front dimension 48 72 96 144 Measuring Ranges Terminal protection Dial Logo Pointer type frequency meter 48 mm x 48 mm 72 mm x 72 mm 96 mm x 96 mm 144 mm x 144 mm Refer to table inside Full sized polycarbonate back cover Normal glass Antiglare glass Black Red,Blue,Yellow,White Vertical On request... 18 Standard scale same as measuring range Blank dial with division Additional lettering on request Additional numbering on request Coloured marking red or green Coloured sector red or green RISHABH * Instruments with damaged bezels or window glasses must be disconnected from mains. * Adequate safety clearance must be maintained to control panel fasteners and to sheet metal housing, if non - insulated connector wires are used. * The back cover must be snapped into place after the connector wires have been clamped for protection against accidental contact. * Scales should be replaced under Voltage- free conditions. * Bezels and window glasses should be replaced under Voltage - free conditions. Ordering example FM 72 Measuring range 45...5...55 Hz, rated voltage AC 23V Specifications are subject to change without notice(2/9) standard Please clearly add the desired specifications while ordering Rishabh Instruments. Tel. +91 253 22216, 22222 Fax +91 253 235164 E-mail India - marketing@rishabh.co.in International - exp.marketing@rishabh.co.in 1 / 1 / I / IV / 117
Analogue Power Factor Meters - LF LF 72 LF 96 LF 144 Data Sheet Analogue Power Factor Meters Tel. +91 253 22216, 22222 Fax +91 253 235164 E-mail India - marketing@rishabh.co.in International - exp.marketing@rishabh.co.in Rishabh Instruments 1 / 1 / I / V / 117
Analogue Power Factor Meters - LF Application The moving coil indicators LF 72/96/144 and a phase angle adjuster are used to monitor changing power factor conditions on ir-reversible balanced load systems The power factor is indirectly determined by measuring the phase angle ö between current and voltage (both sinusoidal). However the indicators are calibrated in values of cos ö of the angle ö. These meters offer several advantages in Switchboard & Generating Set panels.number of meters can be mounted in a single Cut out (Mosaic Mounting).The Bezel,Front window glass and Dial can be easily replaced Applicable Standards Nominal case and cutout dimensions for indicating electrical instruments. IS 2419 DIN 437 Scale and pointer for electrical measuring instruments. IS 1248 DIN 4382 Connections & terminal markings IS 1248 for panel meters DIN 4387 Terminal bolts / leads DIN 462/46282 Clamp straps for connections. DIN 46282 Safety requirements and protective measures for Electrical indicating instruments and their acessories. Performance specifications for direct acting indicating analogue electrical measuring instrumentsand their accessories Front frames for indicating measuring instruments principle dimensions. Technical conditions of delivery for electrical instruments. UL Combustibility class. Mechanical strength (Free fall test, vibration test) IS 9249 DIN 45 / 8-7 VDE 11 /11-72 VDE 41 /1-76 IEC 529,IEC 11 IS 1248 IEC 51/DIN EN 651 DIN 4371 DIN 43718 DIN 4371 UL 94 V-O IS 1248, IEC 51 IS 9 VDE 411, part I, Sec.43/44.IEC 11 Electro Magnetic Compatibility(EMC)Compliance as per following standards- EN 581-2,EN 582-2,EN 5511/CISPR 11, EN 6555-2,IEC 555-2, EN 61-4-4 / IEC 1-4-4, EN 61-4-2 / IEC 1-4-2, EN 61-4-5 / IEC 1-4-5, ENV 514. Comply with following European directives 89/336/EEC( EMC directive),73/23/eec(low voltage directive)&amendment 93/68/EEC, for CE marking. Scale and Pointer Pointer Pointer deflection... 9 Scale characteristics Scale division Scale length Interchangeability Mechanical Data Case details Case material Panel fixing Mounting Panel thickness Terminals Electrical Data Measured quantity Tel. +91 253 22216, 22222 Fax +91 253 235164 E-mail India - marketing@rishabh.co.in International - exp.marketing@rishabh.co.in Moulded square case suitable for mounting in Control / Switchgear panels, Machinery consoles. Glass filled polycarbonate, flame retardant and drip proof as per UL 94 V-. Rishabh Instruments 1 / 1 / I / V / 117 Glass Black Vertical Swivel screws. Stackable in a single cutout < 4 mm Hexagon studs, M4 screws and wire clamps E3 (DIN 46282) Power Factor Overload capacity (acc to IS 1248/ IEC 51/ DIN EN 651) Continuously Short duration Power consumption(approx)- Current path < 1. VA Voltage path < 3. VA Enclosures code (IEC 529) insulation class Rated insulation voltage Proof voltage testing Installation catagory (IEC 11) Insulation resistance 1.2 times rated voltage / current 2 times rated voltage, 5 Sec max 1 times rated current, 5 Sec max IP 52 case IP for terminals without backcover IP 2 for terminals with backcover Group A according to VDE 11 66 V 2 kv 3 VCAT III Knife - edge pointer Non - Linear Coarse-fine LF72 63mm LF96 97mm Scales are interchangeble. > 5 Mohm at 5 V d.c. LF144 146mm
Analogue Power Factor Meters - LF Accuracy at Reference Conditions Accuracy class Reference conditions Ambient temperature Waveform Nominal range of use Ambient temperature External magnetic field Voltage Current Environmental Conditions 1.5 according to IS1248 (IEC 51/ DIN EN 651) 23 C + 2 C Nominal position + 1 Sinewave Distortion Factor <= 1 % current 95...1 % rated current warmup >= 5 minutes at min 8 % of rated current and 1 % of rated voltage. Voltage Rated voltage + 2% Frequency 5 Hz +/ -.1% Others IS 1248 (IEC 51/ DIN EN 651) Frequency Climatic suitability Operating temperature Storage temperature Relative humidity Shock resistance Vibration resistance... 5 C Nominal position + 5.5 mt Rated voltage + 15% 2 to 12 % of rated current 49-51 Hz for single phase 45-65 Hz for 3 phase Climate category II as per IS 1248 (climatic class 3 according to VDE / VDI 354) -1... + 55 C -25... + 65 C < 75% annual average, non-condensing 15g. 11ms 1-15-1 Hz/.15 mm 1.5 g at about 5 Hz. Standard Measuring Ranges Type E D Measuring Ranges COS ö COS ö COS ö Rated Voltage Single phase system 3 phase system balanced load cap.5...1...o.5 ind cap.8...1...o.3 ind cap.8...1...o.8 ind Following single phase and three phase voltages are available as standard. The voltages will be considered as a phase voltage(between phase & Neutral) in case of single phase meters and as a line voltage (between two phases) in case of multi phase 2 wire, 3 wire and 4 wire meters. Please clearly specify the application (3 ph. 2 wire,3 wire or 4 wire) Rated Current 57.5 63.5 1 11 12 127 22 23 24 289 38 415 44 5 1A 5A Options Case Red index pointer Dial Blank dial Special markings Division dials Colour markings/bands Antiglare glass Red, Yellow, Blue, White Front adjustable on site on request...18 With initial and end values marked. Numbering /Lettering. Basic divisions without numbering. Red or green. Accessories Safety terminal protection Full sized polycarbonate back cover to provide protection against accidental contact (hand and fingers) acc to IS 9249 VDE 41 Tel. +91 253 22216, 22222 Fax +91 253 235164 E-mail India - marketing@rishabh.co.in International - exp.marketing@rishabh.co.in Rishabh Instruments 1 / 1 / I / V / 117
Analogue Power Factor Meters - LF Functional Principle Dimensions The measuring system comprises a moving coil indicator & phase angle converter attached to the case of indicating instrument. moving coil movements has pivots of very high hardness movement is suspended. between spring loaded saphire jewels. movement is properly shielded & critically damped by eddy currents induced in coil former. d b a Schematic Diagram. c f e A current transformer 1 of the phase angle converter provides input current to the electronic circuit. Both the input voltage and the current are passed to a bistable filp-flop stage 2. The pulse duty cycle of flip-flop is proportional to the phase angle.a low pass filter allows the mean value which is proportional to the phase angle and is fed to the moving coil movement 3. Connections LF 72/96/144 Single phase L1 N(L2) 1 3 2 5 LF 72/96/144 three phase balanced load k K I L X 1 3 5 8 Dimensions (in mm) LF 96 LF 144 Bezel a 72 96 144 Case b 66 9 136 Depth c 53 53 53 d +.7 +.8 +1 67.5 91.5 137.5 e 5.5 5.5 5.5 Cutout Size 68 92 138 Depth with Back cover f 64 64 64 Weight (approx.).55 kg..6 kg..8 kg. Safety Precautions LF 72 * Instruments with damaged bezels or window glasses must be disconnected from mains. * Adequate safety clearance must be maintained to control panel fasteners and to sheet metal housing, if non - insulated connector wires are used. * The back cover must be snapped into place after the connector wires have been clamped for protection against accidental contact. * Scales should be replaced under Voltage - free conditions. * Bezels and window glasses should be replaced under Voltagefree conditions Specifications are subject to change without notice(2/9) L1 L2 L3 k K I L X X X Tel. +91 253 22216, 22222 Fax +91 253 235164 E-mail India - marketing@rishabh.co.in International - exp.marketing@rishabh.co.in Rishabh Instruments 1 / 1 / I / V / 117
Analogue Power Factor Meters - LF Ordering Information Type LF Front dimension 72, 96 and 144 Type E D Measuring ranges (COS ) Terminal protection Rated voltages Rated currents Dial Logo Power Factor meter 72 mm x 72 mm 96 mm x 96 mm 144mm x 144mm Single phase systems 3 phase system balance load cap.5...1...5 ind cap.8...1...3 ind, cap.8...1...8 ind full sized polycarbonate back cover Refer to table inside 1A, 5A Normal glass Antiglare glass Black Red, Blue, Yellow, White Vertical On request... 18 Standard scale same as measuring range Blank dial with division Additional lettering on request Additional numbering on request Coloured marking red or green Coloured sector red or green RISHABH standard Please clearly add the desired specifications while ordering Ordering example LF 96 D for 3 phase 4 wire system balanced load,measuring range ( cos ö ) cap.5...1...5 ind,rated voltage AC 23 V, rated current 1A. Specifications are subjects to change without notice (2/9) Tel. +91 253 22216, 22222 Fax +91 253 235164 E-mail India - marketing@rishabh.co.in International - exp.marketing@rishabh.co.in Rishabh Instruments 1 / 1 / I / IV / 117
Power Meters Active - Reactive - LM LM 96 LM 144 Data Sheet Analogue Watt Meters 9 Scale Tel. +91 253 22216, 22222 Fax +91 253 235164 E-mail India - marketing@rishabh.co.in International - exp.marketing@rishabh.co.in Rishabh Instruments 1 / 1 / I / IV / 117
Power Meters Active - Reactive - LM Application The Watt meters, LM96/144 are offered for the AC systems -single phase -3 phase balanced load 3 or 4 wire -3 phase unbalanced load 3 or 4 wire These instruments are suitable to indicate forward (export / out going) and reverse (import / in coming) power flow. They can be used both on sinusoidal and non - sinusoidal current These meters offer several advantages in Switchboard and Generating Set panels. Number of meters can be mounted in a single Cut out (Mosaic Mounting).The Bezel, Front window glass and Dial can be easily replaced Applicable Standards Nominal case and cutout dimensions for indicating electrical instruments. Scale and pointer for electrical measuring instruments. Connections and Terminal markings for panel meters. Terminal bolts / leads Clamp straps for connections. Safety requirements and protective measures for Electrical indicating instruments and their acessories. Performance specifications for direct acting indicating analogue electrical measuring instrumentsand their accessories Front frames for indicating measuring instruments principle dimensions. Technical conditions of delivery for electrical instruments. UL Combustibility class. Mechanical strength (Free fall test, vibration test) Environmental conditions IS 2419 DIN 437 IS 1248 DIN 4382 IS 1248 DIN 4387 DIN 462/46282 DIN 46282 IS 9249 DIN 45 / 8-7 VDE 11 /11-72 VDE 41 /1-76 IEC 529,IEC 11 IS 1248 IEC 51/DIN EN 651 DIN 4371 DIN 43718 DIN 4371 UL 94 V-O IS 1248, IEC 51 IS 9 VDE 411, part I, Sec.43/44.IEC 11 IS 1248 IS 9, Part 5,7,8 VDE / VDI 354 Electro Magnetic Compatibility(EMC)Compliance as per following standards- EN 581-2,EN 582-2,EN 5511/CISPR 11, EN 6555-2,IEC 555-2, EN 61-4-4 / IEC 1-4-4, EN 61-4-2 / IEC 1-4-2, EN 61-4-5 / IEC 1-4-5, ENV 514. Comlpy with following European directives 89/336/EEC( EMC directive),73/23/eec(low voltage directive)&amendment 93/68/EEC, for CE marking. Scale and Pointer Pointer Knife pointer Pointer deflection... 9 Scale characteristics Linear Scale division Coarse-fine Scale length LM96 97mm LM144 146mm Mechanical Data Case details Case material Panel fixing Mounting Panel thickness Terminals Electrical Data Measured quantity Active / Reactive Power Response time 4s max. Overload capacity (acc to IS 1248/ IEC 51/ DIN EN 651) Continuously 1.2 times rated voltage / current Short duration 2 times rated voltage, 5 Sec max 1 times rated current,5 Sec max Tel. +91 253 22216, 22222 Fax +91 253 235164 E-mail India - marketing@rishabh.co.in International - exp.marketing@rishabh.co.in Moulded square case suitable for mounting in Control / Switchgear panels, Machinery consoles. Glass filled polycarbonate, flame retardant and drip proof as per UL 94 V-. Glass Black Vertical Swivel screws. Power consumption(approx)- Current path <.2 VA Voltage path types E1W, D1W, D1B, V1W, V1B < 3. VA E1B < 3.5 VA D2W, D2B < 3.4 VA V3W < 3.9 VA V3B < 4.3 VA Enclosures code (IEC 529) insulation class Rated insulation voltage Proof voltage testing Installation catagory (IEC 11) insulation resistance Stackable in a single cutout < 4 mm Hexagon studs, M4 screws and wire clamps E3 IP 52 case IP for terminals Group A according to VDE 11 66 V 2 kv 3 VCAT III > 5 Mohm at 5 V d.c. Rishabh Instruments 1 / 1 / I / IV / 117
Power Meters Active - Reactive - LM Accuracy at Reference Conditions Accuracy class Reference conditions Ambient temperature Input Feasibility factor Power factor Voltage Frequency Current Environmental Conditions Options 1.5 according to IS1248 (IEC 51/ DIN EN 651) 23 C + 2 C Nominal position + 1 Full-scale power value Pw or Pb "Lambda"=Pw/Ps or Pb / Ps Cos ö = 1 +.1 for Watt meters & Sin ö = 1 +.1 for Var meters Rated voltage + 2% 45-65 Hz (5 Hz +.1% for E1B) 2% to 12% of rated current Others IS 1248 (IEC 51/ DIN EN 651) Electrical and mechanical zero point in the meter are not necessarily identical. Zero adjustment should be done when only voltage is applied and current circuit not energised. Nominal range of use Ambient temperature External magnetic field Voltage Power factor Frequency Climatic suitability Operating temperature Storage temperature Relative humidity Shock resistance Vibration resistance Case Red index pointer Dial Blank dial Special markings Division dials Colour markings/bands... 5 C Nominal position + 5.5 mt Rated voltage + 15% Cos ö = 1 to.5 (ind.) for active power Sin ö = 1 to.5 (ind.) for reactive power 45-65 Hz (5 Hz + 1% for E1B) Climate category II as per IS 1248 (climatic class 3 according to VDE / VDI 354) -1... + 55 C -25... + 65 C < 75% annual average, non-condensing 15g. 11ms 1-15-1 Hz/.15 mm 1.5 g at about 5 Hz. Antiglare glass Red,Yellow,Blue,White Front adjustable on site on request...18 With initial and end values marked. Numbering /Lettering. Basic divisions without numbering. Red or green. Standard Measuring Ranges Type Active power Single phase system E1W E1B 3 phase 3 wire system balanced load D1W D1B 3 phase 4 wire system balanced load V1W V1B 3 phase 3 wire system unbalanced load D2W D2B 3 phase 4 wire system unbalanced load V3W V3B selection of measuring range Apparant power Ps is calculated from primary ratings of current transformer and voltage transformer. In single phase network, Ps = V. I where V = voltage between phase and neutral & I = line current. In three phase network, Ps = v3 V. I where V = voltage between two phase & I = line current. Full scale value i.e range of the instrument ( Pw = active power, Pb = reactive power) must be selected in such a way that the same remain between.5 times and 1.2 times the value of apparent power Ps. Thus feasibility factor "Lambda" should be between.5 and 1.2 where "Lambda" = Pw/Ps or Pb/Ps Full scale values shall preferably be selected from standard series according to DIN 4371, 1-1.2-1.5-2-2.5-3-4-5-6-7.5-8 and their decadic / decimal multiples. Rated voltage- For Single phase(e1w, E1B) - 57.7, 63.5, 1, 11, 127, 22, 289, 38. For Three phase (D1W, D1B, - 1, 11, 22, 24, 38, 415, D2W, D2B, V1W, V1B, V3W, V3B) 5. The voltage will be considered as a phase voltage (between phase an neutral) in case of single phase meters and as a line voltage (between two phases) in case of multi phase (2 wire, 3 wire and 4 wire) meters. Rated current- Safety Precautions Reactive power 1A OR 5 A If used on current transformer, please state transformer ratio on the order. * Instruments with damaged bezels or window glasses must be disconnected from mains. * Adequate safety clearance must be maintained to control panel fasteners and to sheet metal housing, if non - insulated connector wires are used. * Scales should be replaced under Voltage- free conditions. * Bezels and window glasses should be replaced under Voltage - free conditions Specifications are subject to change without notice(2/9) Tel. +91 253 22216, 22222 Fax +91 253 235164 E-mail India - marketing@rishabh.co.in International - exp.marketing@rishabh.co.in Rishabh Instruments 1 / 1 / I / IV / 117
Power Meters Active - Reactive - LM Ordering Information Type LM Front dimension 96 and 144 Type Measurng ranges Rated voltages Rated currents E1W D1W V1W D2W V3W E1B D1B V1B D2B V3B Watt and Var meter,9 o 96 mm x 96 mm 144mm x 144mm Specify while ordering Refer to table inside 1A, 5A Normal glass Antiglare glass Black Red,Blue,Yellow,White Scale Single phase systems 3 phase 3 wire system balanced load 3 phase 4 wire system balanced load 3 phase 3 wire system unbalanced load 3 phase 4 wire system unbalanced load Vertical On request... 18 Dial Logo Standard scale same as measuring range Blank dial with division Additional lettering on request Additional numbering on request Coloured marking red or green Coloured sector red or green RISHABH standard Please clearly add the desired specifications while ordering Ordering Example LM 96 D V3W for active power 3 phase 4 wire system unbalanced load,measuring range... 48 kw, voltage AC 44 V, for use on current transformer 6/5A. Tel. +91 253 22216, 22222 Fax +91 253 235164 E-mail India - marketing@rishabh.co.in International - exp.marketing@rishabh.co.in Rishabh Instruments 1 / 1 / I / IV / 117
Power Meters Active - Reactive - LM Functional Principle For active and reactive power measurement, a moving-coil indicator is used to indicate watts and vars for which an analogue DC signal is obtained from a power converter attached to the case of the indicator. Schematic diagram. Connections The power converter uses one, two or three for multiplier systems 2 depending on the measurement of balanced or unbalanced load AC systems. Current transformers 1 provide the input current to the multiplier circuit. The multipliers form the product of the instantaneous values of current and voltage (TDM principle). The product resultant is integrated, thereby suppressing the AC ripple. Subsequently product proportional output is delivered to 3.There the voltage is converted into Current, whose magnitude also depends on Feasibility Factor ( ). Finally this current is fed to the moving coil movement, 4. For the instrument DC power supply is obtained from input voltage, 5. Dimensions b d b a a c e Dimensions (in mm) LM 96 Bezel a 96 Case b 9 Depth c 16 X d 91.5 e 5.5 Cotout Size 92 +.8 Depth with Back cover f 64 X X L, 144 144 136 16 137.5 5.5 138 +1 64 Weight (approx.).65-.9 kg..9-1.1 kg. Tel. +91 253 22216, 22222 Fax +91 253 235164 E-mail India - marketing@rishabh.co.in International - exp.marketing@rishabh.co.in Rishabh Instruments 1 / 1 / I / IV / 117
Syncroscope Rish - SQ SQ 96 SQ 144 Data Sheet Electronic Synchroscope Page 1 of 3 Version 1/1/II/X/912-A
Application The Electronic Synchroscope is designed to provide an illuminated indication of actual phase difference between the BUS Voltage(reference voltage) & the GENERATOR Voltage(incoming voltage) It denotes the actual frequency difference corresponding to the inverse of time taken for one rotation of the illuminated vector spot. When two alternators are paralleled,it is necessary that, 1)Frequency must be equal. 2)Phase must be same. Sychroscope is,hence used to indicate the Phase & Frequency difference between two AC alternators,which are to be paralleled. Description he rotation of the vector spot is with reference to the bus voltage. If the vector spot LED turns clockwise,it indicates the GENERATOR frequency is greater than the BUS frequency. It means the speed of the generator must be reduced by the operator. If the spot LED turns anticlockwise,the GENERATOR frequency is less than BUS frequency.in this case speed of the generator must be increased. If T is the time taken for one rotation, the frequency difference can be calculated as 1/ T = A f Example Let the bus frequency be 5 Hz.The vector spot takes 1 Sec. for one rotation,clockwise. 1/1 =.1 Hz. The frequency difference =.1Hz. Hence we can infer that GENERATOR frequency is 5.1 Hz. If the Frequency & Phase of BUS signal matches with those of GENERATOR signal,the two green led s at 12 o clock position glow. If the Frequency matches & Phase does not, then one red led corresponding to the phase difference will glow. Favorable condition for" Switching in" the Generator 1. Ensure that the frequency difference between two inputs is within the requirements of user as follows Measure time taken for 1 complete rotation of the vector spot insecond(t). The frequency difference will be Af = 1/T(Hz) 2. Provided the frequency difference is within acceptable limits,wait till the SYNC mark LED s(two green LED s at 12 o clock position)glow. At this instant, it is safe to CONNECT the GENERATOR to BUS Functional Principle Input I Input II Power Supply I Power Supply II Phase / LED Adjustment Frequency Display Network Detector The Bus & Gen inputs are fed to the Frequency & Phase detection network.the output duty cycle of the network corresponds to the frequency difference between Bus & Generator Voltage. The detector network also determines the actual phase difference. Mechanical Data Case details Case material Panel fixing Mounting Panel thickness Terminals Moulded square case suitable for mounting in Control / Switchgear panels, machinery consoles. Glass filled polycarbonate, flame retardant and drip proof as per UL 94 V-O. Glass Black Vertical Swivel screws. Stackable in a single cutout < 4 mm Hexagon studs, M4 screws and wire clamps E3 (DIN 46282) Electrical Data Measured quantity Frequency & Phase difference Power consumption 6 VA Max Enclosures code IP 52 case (IEC 529) IP for terminals Insulation class group A according to VDE 11 Insulation voltage 66 V Proof voltage 2kV Frequency range 35-7 Hz Pull in / drop out Freq. + / - 9 Hz Installation catogory 3 V CAT III (IEC11) insulation resistance > 5 Mohm at 5 V d.c. Reference conditions Ambient temperature 23 C + 3 C Input Voltage Rated voltage + 2% Rated frequency 5 Hz +.1 % Environmental Conditions Climatic suitability Climate category II as per IS 1248 (climatic class 3 according to VDE / VDI 354) Operating temperature - 1...+ 55 C Storage temperature -2...+ 65 C Relative humidity < 75 % annual average non - condensing Shock resistance 15g, 11ms Vibration resistance 1-15-1 Hz /.15 mm / 5 Cycles / 1 octave per minute. Applicable Standards Nominal case and cutout dimensions for IS 2419 indicating measuring instruments DIN 437 Connections and Terminal markings for IS 1248 panel meters DIN 4387 Terminal bolts / leads. DIN 462/46282 Clamp straps for connections DIN 46282 Safety requirements and protective- IS 9249-1979 measures for Electrical indicating- DIN 45 / 8-7, instruments and their accessories. VDE 11/ 11-72 VDE 41/ 1-76 IEC 529, IEC 11 Performance specification for direct IS 1248-1983 acting indicating analogue electrical IEC 51/DIN EN 651 measuring instrument and their accessories Environmental conditions IS 1248-1983 IS 9 VDE / VDI 354 Front frames for indicating measuring DIN 43718 instruments principal dimensions UL Combustibility Class UL 94 V- Technical conditions of delivery for DIN 4371 electrical instruments Mechanical Strength IS 1248/IEC 51 (Free fall test,vibration test) IEC 11, IS 9-1979 VDE 411,part 1 Sec 43/44 Options Case Colour of LED s Dial Special markings Antiglare glass Red,Yellow,Blue,White. Orange,Yellow Numbering / Lettering. Page 2 of 3 Version 1/1/II/X/912-A
Connections Dimensions Type Terminal BUS 1-3 1-2 GEN 4-6 4-5 SQ 96 SQ 144 44V 24V 48V 11V 127V 38V 22V 415V 1V 12V Ordering Information Type SQ Electronic Sychroscope Front Dimension 96,144 96 mm x 96 mm, 144 mm x 144 mm Rated voltages Refer to selection table inside Normal glass Antiglare glass Colour of Bezel Black Red, Blue, Yellow, White Vertical (-36 ) Dial Additional lettering on request Additional numbering on request Logo RISHABH,for Indian Sales. C.G,for export through Crompton Greaves I.D. Others Standard *2 Please clearly add the desired specifications while ordering Ordering example SQ 96, rated voltage AC 23 V. Specifications are subject to change without notice(1/98) Dimensions (in mm) SQ 96 SQ 144 Bezel a p96 p144 Case b p9 p136 Depth c 16 16 d p 91.5 p137.8 e 5.5 8.5 Cutout Size +.8 p 92 +1 p 138 Weight (approx.).6kg.7kg Safety Precautions Instruments with damaged bezels or window glasses must be disconnected from mains. Adequate safety clearance must be maintained to control panel fasteners and to sheet metal housing,if non-insulated connector wires are used. Bezels and window glasses should be replaced under Voltage - free conditions. Page 3 of 3 Tel. +91 253 22216, 22222 Fax +91 253 235164 E-mail India - marketing@rishabh.co.in International - exp.marketing@rishabh.co.in Version 1/1/II/X/912-A
Analogue Meters With Moving Iron Movement Two in One EQ - 96 Data Sheet Analogue Meters with Moving Iron Movement RISHABH INSTRUMENTS PVT.LTD. F-31, MIDC, Satpur, Nashik-422 7, India. Tel. +91 253 22216, 22222 Fax +91 253 235164 E-mail India - marketing@rishabh.co.in International - exp.marketing@rishabh.co.in Web Page 1 of 4 1 / 1 / I / XV / 71 / A