Technical Section: Miniature Circuit Breakers

Transcription

1 MCBs and Accessories Data. Calibration With CBI Hydraulic- Magnetic Miniature Circuit Breakers, there is no effect on the fixed trip point at ambient temperature ranges from -5 C to +60 C. 2. Products Products comply to local and international standards (SANS, VC, IEC, etc).. DC Voltage Rating Please refer to CBI catalogues / leaflets for DC ratings. 4. For reverse connection Contact CBI for details. 5. Module Width CBI s MCB module widths are: mm and 26 mm dual mounting - (Escutcheon height 57 mm). mm, 8 mm and 27 mm in din-rail mounting (Escutcheon height 45 mm), Suffix D. 6. Special Breakers For all breakers manufactured to non-standard requirements, prices will be by quotation only 7. Standard Current Ratings Ampere ratings as indicated are standard. Non-standard ratings can be provided Prices on request (POR). 8. Switch Disconnectors All switch disconnectors must be backed up by a suitable short circuit protection device (SCPD), having the same or lower current rating and the same interrupting capacity as the switch disconnector, unless otherwise stated. Contact CBI for availability of 4 Pole switch disconnector units. 9. Motor Starting Please refer to Page 95 or CBI catalogue. Technical Section: Miniature Circuit Breakers 0. Time Delay Curves Curve No. Time Delay Instantaneous (short circuit) Non Tripping Current Tripping Current Long High 0 20 x In.05 x In.0 x In 2 Medium Medium 5 0 x In.05 x In.0 x In Short Low 5 x In.05 x In.0 x In 2, (LL) Medium 5 % Trip Point (Load Limiting).05 x In.5 x In 9 Long Medium 7 2 x In.05 x In.0 x In B Short Low 5 x In. x In.45 x In C Medium Medium 5 0 x In. x In.45 x In D Long High 0 20 x In. x In.45 x In OP (AC+DC) Very Short Low 5 x In.05 x In.0 x In U2 (DC) Medium Medium 6 x In.05 x In.0 x In KM Medium Medium 6 2 x In.00 x In. x In Note: Other curves available on request. Page 92

2 MCCBs and Accessories Data. 000 V Rating For 000 V rating, please consult CBI. (Switch disconnectors not available) 2. Adjustable Current Ratings Technical Section: Moulded Case Circuit Breakers From the FD range upwards, some breakers are fitted with adjustable magnetic trips. The suffix V/E types also have adjustable overload trips. E (electronic) types down to 50 % of nominal rating and suffix V (mechanical) types down to 75 % of nominal rating.. Calibration CBI thermal breakers are calibrated at 40 C, unless otherwise stated. Derating for higher temperature environment to be done in accordance with derating curves. 4. Reverse Connection Contact CBI for details. Units indicated line / load should not be reverse connected. 5. Special Breakers Prices for all breakers made by CBI to meet non-standard rating requirements of customer will be by quotation only. 6. Standard Current Ratings Ampere ratings indicated are standard. Non-standard can be provided, on application at a surcharge of up to 20 % of the next standard rating price, depending on quantity, product type and acceptance by CBI. 7. Switch Disconnector Fault Ratings The fault current ratings of CBI switch disconnectors which are fitted with shunt trips and external tripping devices are the same as those of the corresponding circuit breakers. Additional of interface barriers is mandatory. 8. Terminations Consult CBI Catalogues for details. 9. Transient Inrush and Close Co-ordination Protection Higher transient motor starting current associated with some high efficiency motors have created nuisance tripping problems. Consult CBI when in doubt. 0. DC Interrrupting Capacity Refer to CBI DC Catalogue for details.. Motor Starting In addition to cable protection functions, the CBI circuit breakers are designed for induction motor starting and protection duties. These breakers are particularly suited to direct-on-line starting applications for standard type motors in conjunction with a contactor overload combination or as a stand-alone unit. For complete details, refer to the Motor Starting and Protection Application Guide and Circuit breaker Selection Guide for DOL Motor Starting.. Warranty Claims Products may only be returned to CBI for warranty claims if all conditions under Section 7, Limitation of Liability, of CBI s General Terms and Conditions of Sale have been met (copy available upon request). Page 9

3 MCB Dimensions MCB Dimensions Product Height (A) Width (B) Depth (C) Escutcheon (D) QA - () QA - 2() QA - () () () () () (26) (26) (26) (26) (27)-D 97, (27)-D 97, (27)-D 97, (27)-D 97, (27)-D 97, (27)-D 97, (27)-D 97, (27)-D 97, A/C - D QA7 A/C , A/C ,8 57 SM5A SM6A Note: All measurements are in mm. Technical Section: MCB Dimensions Page 94

4 Technical Section: Motor Starting Guide: V MOTOR SIZE (kw) Notes: SINGLE PHASE VOLTAGE THREE PHASE VOLTAGE 20 V AC 400 V AC 5 ka 5 A* 5 A* 5 A* 5 A* 0 A* 0 A* 5 A* 5 A* 20 A* 20 A* A* 0 A* 0 A* 5 A* 40 A* 45 A* 50 A* 60 A* 70 A* 80 A* 00 A* 0 ka 5 A* 5 A* 5 A* 5 A* 0 A* 0 A* 5 A* 5 A* 20 A* 20 A* A* 0 A* 0 A* 5 A* 40 A* 45 A* 50 A* 60 A* 70 A* 80 A* 00 A* 5 ka A* 2 A* 2 A* 5 A* 5 A* 5 A* 5 A* 0 A* 0 A* 0 A* 5 A* 5 A* 20 A* 20 A* 20 A* 20 A* 20 A* A* 0 A* 5 A* 45 A* 60 A* 70 A* 80 A* 00 A* 0 ka A* 2 A* 2 A* 5 A* 5 A* 5 A* 5 A* 0 A* 0 A* 0 A* 5 A* 5 A* 20 A* 20 A* 20 A* 20 A* 20 A* A* 0 A* 5 A* 45 A* 60 A* 70 A* 80 A* 00 A* 5 ka G5D 6 A** G5D 6 A** G5D 6 A** G5D 6 A** G5D 6 A** G5D 6 A** G5D 6 A** G5D 6 A** G5D 6 A** G5D 6 A** G5D 20 A G5D 20 A G5D 20 A G5D 20 A G5D 2 A G5D 2 A G5D(40 A G5D 40 A G5D 50 A G5D 6 A G5D 80 A G5D 00 A G5D 00 A G5D A G5D A F5D 75 A F5D 2 A F5D 0 A / FD 0 A KD 50 A KD 400 A K5D 500 A K5D 600 A L5DE 800 (700 A) N85DE 000 (900 A) N85DE 000 (000 A) N85DE 0 (200 A) N85DE 0 (0 A) N85DE 600 (400 A) N85DE 600 (600 A) ACB2000CM (750 A) ACB2000CM(900) ka 5 ka Note: * = External Overload Protection Required. ** = Locked Rotor Protection Only. GD 6 A** GD 6 A** GD 6 A** GD 6 A** GD 6 A** GD 6 A** GD 6 A** GD 6 A** GD 6 A** GD 6 A** GD 20 A GD 20 A GD 20 A GD 20 A GD 2 A GD 2 A GD 40 A GD 40 A GD 50 A GD 6 A GD 80 A GD 00 A GD 00 A GD A GD A FD 75 A FD 2 A FD 0 A / FD 0 A KD 50 A KD 400 A K5D 500 A K5D 600 A L5DE 800 (700 A) N85DE 000 (900 A) N85DE 000 (000 A) N85DE 0 (200 A) N85DE 0 (0 A) N85DE 600 (400 A) N85DE 600 (600 A) ACB2000CM(750A) ACB2000CM (900 A) G5D 6 A** G5D 6 A** G5D 6 A** G5D 6 A** G5D 6 A** G5D 6 A** G5D 6 A** G5D 6 A** G5D 6 A** G5D 6 A** G5D 20 A G5D 20 A G5D 20 A G5D 20 A G5D 20 A G5D 20 A G5D 40 A G5D 40 A G5D 50 A G5D 6 A G5D 80 A G5D 00 A G5D 00 A G5D A G5D A F5D 75 A FD 2 A F5D 0 A / F5D0 A K5D 50 A K5D 400 A K5D 500 A K5D 600 A L5DE 800 (700 A) N85DE 000 (900 A) N85DE 000 (000 A) N85DE 0 (200 A) N85DE 0 (0 A) N85DE 600 (400 A) N85DE 600 (600 A) ACB2000CM(750 A) ACB2000CM(900 A) ) All information in this table is for reference and selection purposes only, and only direct line (DOL) starting. 2) Breaker selection is based on 4-pole three phase squirrel cage motors and certain deviations may be encountered for different motor manufacturers. ) Circuit breaker settings are based on rated motor current multiplied by,6 to prevent starting current from exceeding the instantaneous pick-up current of the circuit breaker. 4) For complete details refer to the Circuit Breaker Selection Guide for DOL Motor Starting. These are adjustable breakers and the current in ( ) is the ampere value that these breakers must be set at. 65 ka Curve Circuit Breakers Only. F65DV 6- (6 A)** F65DV 6- (6 A)** F65DV 6- (6 A)** F65DV 6- (6 A)** F65DV 6- (6 A)** F65DV 6- (6 A)** F65DV 6- (6 A)** F65DV 6- (6 A)** F65DV 6- (6 A)** F65DV 6- (6 A)** F65DV 6- (20 A) F65DV 6- (20 A) F65DV 6- (20 A) F65DV 6- (20 A) F65DV -40 (2 A) F65DV -40 (2 A) F65DV -40 (40 A) F65DV -40 (40 A) F65DV 40-6 (50 A) F65DV 40-6 (6 A) F65DV 80-/6-00 (80 A) F65DV 80-/6-00 (00 A) F65DV 80-/6-00 (00 A) F65DV 80- ( A) F65DV 80- ( A) F65DV 60-0 (75 A) F65DV 60-0 (2 A) F65DV 0 A / K65DE 0 A) K65D (50 A) K65D (400 A) K70D (500 A) K70D00-60 (600 A) L70DE 800 (700 A) N85DE 000 (900 A) N85DE 000 (000 A) N85DE 0 (200 A) N85DE 0 (0 A) N85DE 600 (400 A) N85DE 600 (600 A) ACB2000CM(750 A) ACB2000CM (900 A) Page 95

5 DOL: Contactor - Overload - MCCB Selection Note: Customer to confirm motor FLC on site and adapt where necessary Motor Rating 400 V FLC Contactor Rating OL Relay Setting MCCB Rating Cable PH Kw HP AC A Type MCM AC A Type OR Range A A Size mm 2 5,5 7,5, CC8 8 CMT2 9 to A G7D 20 2,5 7,5 0 5,2 CC8 8 CMT2 2 to 8 A G7D 40 2,5 5 2,7 CC40 40 CMT2 8 to A G7D , CC40 40 CMT2 22 to 2 A G7D ,5 6 CC40 40 CMT2 28 to 40 A G7D CC50 50 CMT6 4 to 50 A G7D CC65 65 CMT6 45 to 65 A G7D CC85 85 CMT95 54 to 75 A CC85 85 CMT95 70 to 95 A CC00 00 CMT95 80 to 00 A CC50 50 CMT50 0 to 50 A K50D CC85 85 CMT2 20 to 85 A K50D CC2 2 CMT2 60 to 240 A K50D CC2 2 CMT to 0 A L65D CC0 0 CMT to 400 A L65D CC CMT to 400 A L65D CC60 60 CMT to 600 A L65D Motor Rating 500 V FLC Contactor Rating OL Relay Setting MCCB Rating Cable PH Kw HP AC A Type MCM AC A Type OR Range A A Size mm 2 5,5 7,5 9 CC8 CMT2 7 to 0 A G7D 6,5 7,5 0 2, CC8 CMT2 9 to A G7D 20 2,5 5 7,4 CC40 2 CMT2 6 to 22 A G7D 40 2, ,4 CC40 2 CMT2 8 to A G7D ,5 28,9 CC40 2 CMT2 24 to6 A G7D CC50 4 CMT6 24 to 6 A G7D CC65 60 CMT6 4 to50 A G7D CC85 75 CMT95 45 to 65 A G7D CC85 75 CMT95 54 to 75 A G7D CC00 85 CMT50 6 to 85 A G7D CC50 00 CMT2 85 to A CC85 85 CMT2 20 to 85 A CC85 80 CMT50 20 to85 A K50D CC2 200 CMT to 240 A K50D CC0 280 CMT to0 A K50D CC CMT to 400 A K50D CC CMT to 600 A L65D Technical Section: Motor Starting Page 96

6 Note: Customer to confirm motor FLC on site and adapt where necessary Technical Section: Motor Starting Page 97

7 DOL Starting (Full Load) R S T MCCB MCM TOR FUSE PB-OFF PB-ON TOR MCM M Conditions. The load shall be an Induction Motor with phase and 4 Poles. 2. Overload relay setting range is selected according to the full load current of the motor.. Cross-section area of the cable is within the value that is connectable to the motor starter. 4. Circuit Breaker (MCCB) is for cable protection. The breaking capacity of the MCCB should be reviewed according to site conditions. R S T Star Delta Starting MCCB FUSE PB-OFF MCM TOR X PB-ON MCM : TOR TR U V W M MCD MCD MCY X Y Z MCM MCY MCD TR MCY Technical Section: Motor Starting Conditions. The load shall be a squirrel cage motor with phase and 4 Poles. 2. Overload relay setting range is selected according to the full load current of the motor.. When the Thermal Overload Relay (TOR) is placed in the area shown. the setting range should be divided by (0,58) 4 Cross-section area of the cable is within the value that is connectable to the motor starter. 5. Thermal Circuit Breaker (MCCB) is for cable protection. The breaking capacity of the MCCB should be reviewed according to site conditions. 6. Thermal Overload Relay (TOR) mounting.* - Separately mountable with an optional mounting unit - Directly mountable when placed in the area shown in the dotted line Note: * Contact CBI for availability Page 98

8 Terminations G G4B X Technical Section: Moulded Case Circuit Breakers G4B G4 JSO / JS L20B / L40B N50D / N70D X G4B G4B KD / K5D JS/FD K50D X X2 Notes: Refer to product specific pages for actual terminal types - It might not be available as separate items if supplied as standard. For relevant current carrying capacities, please refer to relevant products. MCCB Terminal Bolt Sizes: JS - M8 L20 / L40B - M2 G5 / D - M8 G5D - M8 F5 / D - M8 F5D - M8 K / 5D - M2 L5 / 50D - M2 MB - M2 N85D - M2 MCCB Standard Range G7D - M8 - M8 K50D - M0 L65D - M2 N65D - M2 Page 99 MCCB Advanced Range G50D - M8 F50D - M8 F85D - M8 F50D - M8 K65D - M0 K85D - M0 K50D - M0 L65D - M2 L00D - M2 N50D - M0 x 2 N70D - M0 x 2 N50D - M0 x 2

9 THIS IS A SERIES CONNECTED (CASCADING) SYSTEM REPLACEMENT OF THE CIRCUIT BREAKERS OTHER THAN THOSE OF IDENTICAL TYPES SHOULD BE REFERRED TO THE CIRCUIT BREAKER MANUFACTURER Cascading Tables Note: Any current limiting by the cables should be taken into account. The Cascading Table is applied in practice as follows:. Determine the maximum prospective short circuit fault current level at the point of installation of the upstream breaker in the cascade. 2. Moving from the left side towards the right side of the cascading table, in the top row, select an upstream breaker whose breaking capacity rating is equal to or greater than determined by (.) above.. Determine the prospective short circuit current at the installation point of the downstream breaker, taking into account only the current limiting effect of any cable that is connected between the upstream and downstream breakers. Any current limiting by the upstream breaker should be ignored for this purpose. 4. From the first column on the left of the cascading table, select the row that represents a short circuit current that is equal to or higher than this latter short circuit current. 5. The downstream breaker suitable for the cascading application will then be found at the intersection of the row from (2) above, and the column from (4) above. Due to constant research and development, CBI reserves the right to make changes, modifications and extensions to these cascading tables without prior notice. No substitute of any alternative products is allowed. Technical Section: Cascading Care must be taken in replacing older product versions or obsolete ranges. Page 00

10 low voltage Cascading Table No. Technical Section: Cascading Tables Cascading Table (CBI MCCB s) Type G7D 5 - A 50-0 A K50D A L65D A No of Poles Fault Level ka Downstream ka / / 0 / / 20 5,,, / / 0 / BUSBAR RATING ka RMS Global Range Based Page 0

11 Cascading Table No. 2 80/45V Specific let-through energy curves 8 0 N50DEV600 5 Technical Section: Cascading Tables Protective Co-ordination Cascading 80/45 System Voltage Main: Advanced MCCB range Branch: Global Standard & Advanced Range G50D F50DEV F50D F50DEV F85DV K65DEV L65DEV L00DV K50D K50DEV N70DEV Capacity (ka rms) Main breaker Rated breaking Branch Breaker G7D K50D L65D F50DEV F85DV K50DEV L65DEV L00DV 00 L50DEV 50 N50DEV 50 N50DEV N70DEV 70 Maximum Let-through l²t (A²s) N50DEV000 L50D K50D F50D G50D Available Short Circuit Current (karms) Page 0

12 Cascading Table No. 2 K65D K5D KD CASCADING TABLE (CBI MCCBs and MCBs) UPSTREAM CIRCUIT BREAKERS TYPE No. OF POLES FAULT LEVEL ka AMP RATING BUSBAR RATING ka RMS G5D / F5D F65DV 5 65 GD / FD G5D / F5D L65D G5D / F5D G5D / F5D 5 0 G5D / F5D 0 G5D / F5D G5D / F5D G5D / F5D G5D / F5D G5D / F5D G5D / F5D G5D / F5D PROSPECTIVE DOWNSTREAM FAULT LEVEL ka (RMS) G5D / F5D G5D / F5D G5D / F5D G5D / F5D TYPE MOUNTING TYPE ESCUTCHEON, mm NOTES: 57 Mini / DIN / = -(), -(8), -(26) 45 DIN = -(8), -(26) ONLY, = Single pole circuit break ers,, = Single, double or triple pole circuit break ers F5D CAN CASCADE WITH ANY FD UPSTREAM BREAKER UP TO THE MAXIMUM FAULT LEVEL ka OF THE UPSTREAM BREAKER Technical Section: Cascading Tables Page 02