Influence of ambient temperature
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- Mildred Fletcher
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1 temperature Devices Characteristics temperature Temperature Min. Max. DPN, C60H-DC, C60, C120, NG125, Tripping on overload -30 C +70 C C60PV-DC circuit breakers ik60 circuit breakers Tripping on overload -25 C +60 C ic60a/n/h/l circuit breakers Tripping on overload -35 C +70 C Circuit breakers With Vigi (AC) Tripping on overload -5 C +60 C With Vigi (A, SI) -25 C +60 C Tripping on overload -25 C +60 C C60H RCBO, C60H2 RCBO Tripping on overload -15 C +60 C C60NA-DC, SW60PV-DC, C120NA-DC Maximum operating current -25 C +70 C switch-disconnectors iid K residual current circuit breakers Maximum operating current -5 C +60 C iid residual current AC Maximum operating current -5 C +60 C circuit breakers A, SI -25 C +60 C Switches isw Maximum operating current -20 C +50 C isw-na -35 C +70 C Protection auxiliaries None -35 C +70 C RCA, ARA control auxiliaries None -25 C +60 C ict contactors Installation conditions -5 C +60 C itl impulse relays None -20 C +50 C ict, itl auxiliaries None -20 C +50 C Linergy DX Maximum operating current -25 C +60 C Linergy FM Maximum operating current -25 C +60 C Note: the temperature considered is the temperature viewed through the device. Circuit breakers High temperatures b A rise in temperature causes lowering of the thermal threshold (tripping on overload). b Protection is still ensured: the tripping threshold remains lower than the current acceptable by the cable (I z ) b To prevent nuisance tripping, it should be checked that this threshold remains higher than the maximum operating current (I B v the rated load currents, v the operating current I B, switchboard ventilation should be provided for. Low temperatures b A fall in temperature increases the thermal tripping threshold of the circuit breaker. b There is no risk of nuisance tripping: the threshold remains higher than the maximum operating current of the circuit (I B ) demanded by the loads. b It should be checked that the cable remains suitably protected, i.e. that its acceptable current (I z ) is higher than the values shown in the following tables (in amperes). When the ambient temperature could vary within a broad range, both these aspects must be taken into account: b the difference between the maximum operating current of the circuit (I B ) and the tripping threshold of the circuit breaker for the minimum ambient temperature, b the difference between the strength of the cable (I Z ) and the maximum tripping threshold of the circuit breaker for the maximum ambient temperature. 462 Version : /09/2013 CA908007E
2 Maximum permissible current b temperature in which it is placed. b The ambient temperature is the temperature inside the enclosure or switchboard in which the devices are installed. b The reference temperature is in a halftone colour for the different devices. b When several devices operating simultaneously are mounted side by side in a small enclosure, a temperature rise in the enclosure results in a reduction in the rating (already derated, if applicable, depending on the ambient temperature). b Example: Depending on the ambient temperature and the method of installation, the table below shows how to determine, for an ic60, the operating currents not to be exceeded for ratings 25 A, 32 A and 40 A (reference temperature 50 C). Operating current not to be exceeded (A) Installation conditions (IEC ) Ambient temperature ( C) Type Nominal rating (A) ic60 alone Several ic60 in the same enclosure indicated below) 35 C 50 C 65 C 35 C 50 C 65 C Actual rating (A) ic x 0.8 = x 0.8 = x 0.8 = x 0.8 = x 0.8 = x 0.8 = x 0.8 = x 0.8 = x 0.8 = 30 CA908007E Version : /09/
3 Household (IEC ) DPN derating table (IEC ) DPN Rating Curve A B, C, D A B, C, D A B, C, D A B, C, D A B, C, D A B A C, D A B A C, D A B, C A D A B A C, D A B, C, D A B, C, D A B, C, D ik60 derating table. B curve (IEC ) ik60 Rating A A A A A A A A A A A A A ik60 derating table. C curve (IEC ) ik60 Rating A A A A A A A A A A A A A Version : /09/2013 CA908007E
4 Household (IEC ) (cont.) ic60 derating table (IEC ) ic60 Rating A A A A A A A A A A A A A A A C60 derating table (IEC ) C A A A A A A A A A A A A A A A A A A C120 derating table (IEC ) C A A A A A A A A A A A CA908007E Version : /09/
5 Tertiary/Industry (IEC ) DPN derating table (IEC ) DPN Rating Curve A B, C, D A B, C, D A B, C, D A B, C, D A B, C, D A B A C, D A B A C, D A B, C A D A B A C, D A B, C, D A B, C, D A B, C, D ic60 Rating A A A A A A A A A A A A A A A C60 derating table (IEC ) C A A A A A A A A A A A A A A A A A A Version : /09/2013 CA908007E
6 Tertiary/Industry (IEC ) (cont.) C60H-DC derating table (IEC ) C60H-DC 0.5 A A A A A A A A A A A A A A A A A A C60PV-DC derating table (IEC ) C60PV-DC 1 A A A A A A A A A A A C120 derating table (IEC ) C A A A A A A A A A A A CA908007E Version : /09/
7 Tertiary/Industry (IEC ) (cont.) NG125 derating table (IEC ) NG A A A A A A A A A A A Tertiaire/Industrie (IEC ) SW60-DC derating table (IEC ) SW60PV-DC Rating A C60NA-DC derating table (IEC ) C60NA-DC Rating A C120NA-DC derating table (IEC ) C120NA-DC Rating A Tertiary/Industry (IEC ) C60H2 RCBO derating table (IEC ) C60H2 RCBO C60N/H RCBO derating table (IEC ) C60H RCBO Rating A A A A A Rating A A A A A A A A Version : /09/2013 CA908007E
8 Switches b In all cases, the switches are correctly protected against overloads by a circuit breaker with a lower or equal rating, operating at the same ambient temperature. DB ict contactors In the case of contactor mounting in an enclosure for which the interior temperature is in a range between 50 C and 60 C, it is necessary to use a spacer, cat. no. A9A27062, between each contactor. Spacer cat. no. A9A27062 Splitter blocks In the event of a temperature higher than 40 C, the maximum acceptable current is limited to the values in the table below: Type Temperature 40 C 45 C 50 C 55 C 60 C Linergy FM 80 A Linergy DX 63 A CA908007E Version : /09/
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AC Relays Type IC5182 Series N147 Overload Relays are of the magnetically operated self reset type, designed for use on A.C. or D.C. motor starters and controllers for Navy Service A applications. Specification
cor Long Run Experience
Moulded Case Circuit Breakers Moulded Case Circuit Breakers 16-1250A cor Long Run Experience cor Breaking capacity (according to IEC 947-2 at 415V) Icu 100 D160L D250L D400L D630L 70 60 DH800 50 35 30
Thermal Overcurrent Circuit Breaker 3130
Thermal Overcurrent Circuit Breaker 330 Description Single, two and three pole rocker switch/thermal trip free circuit breakers (S-type TO CBE to EN 60934) of compact design for snap-in panel mounting.
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SIRIUS 3RU2 Thermal Overload Relays
Overview 1 2 3 4 6 1 2 NSB0_0207a Connection for mounting onto contactors: Optimally adapted in electrical, mechanical and design terms to the contactors. The overload relay can be connected directly to
Thermal overload relays Type TA Class 10
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Technical data. Standards: IEC/EN EN 574 EN 418. powder-coated Protection class: IP 65. Cable section: max. 1.5 mm V I the :
55 Two-hand control panels SEP System components 460 240 190 30 Standards: IEC/EN 60947-5-5 EN 574 EN 418 cast aluminium, powder-coated Protection class: IP 65 Cable section: max. 1.5 mm 2 U i : 440 V
Range 16A to 63A. Sensitivity 30mA, 100mA, 300mA, 500mA. Execution Double Pole, Four Pole. Specification IEC / IS : 2000
The flow of current through electrical facilities always involves risks. Poorly insulated equipment, faulty wires and incorrect use of an electrical devise cause currents to flow through the wrong path
Thermal Overcurrent Circuit Breaker 3130
Thermal Overcurrent Circuit Breaker 330 Description Single, two and three pole rocker switch/thermal trip free circuit breakers (S-type TO CBE to EN 609) of compact design for snap-in panel mounting. Available
Quality Products, Prompt Service, Trustful Relationships.
KM INDUSTRIAL CORPORATION SINCE 1989 Quality Products, Prompt Service, Trustful Relationships. KM Industrial Corporation has established itself as a trusted supplier of Electrical, Machinery and Industry
and other modular devices for low voltage installation
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18-I73E CAT REF.
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AF series contactors (9 2650)
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CI-tronic Soft Start Motor Controller Type MCI 25B with Brake
Data sheet CI-tronic Soft Start Motor Controller Type MCI 25B with Brake MCI 25B motor controller with brake is designed for soft starting and braking of 3 phase AC motors. The digital controlled soft
I r A short-circuit protective device: Observe the maximum permissible fuse of the contactor with direct device mounting.
DATASHEET - ZB12-2,4 Delivery program Overload relay, 1.6-2.4 A, 1N/O+1N/C Part no. ZB12-2,4 Catalog No. 278437 Eaton Catalog No. XTOB2P4BC1 EL-Nummer 0004131832 (Norway) Product range Overload relay ZB
LR9 F OVERLOAD RELAYS
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Thermal Overload Relays - WEG RW Series, 2 Pole
International (5) 4-07 The RW Class Thermal Overload Relays, with their extended operational service lives, are designed for use with the CWC miniature and CWM standard contactors. These relays can be
Innovators in Protection Technology Moulded Case Circuit Breaker Instruction Manual
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XT IEC Power Control Manual Motor Protectors
May 07 Product Selection Table 7. Rotary with Screw Terminals Global Ratings and North American Ratings Type and Type 2 Coordination Motor Protective Device with Thermal and Magnetic Trip Rated Uninterrupted