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Motors | Automation | Energy | Transmission & Distribution | Coatings

User’s Manual

WEG Molded Case Circuit

Breakers

UBW400

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Содержание UBW400

Страница 1: ...Motors Automation Energy Transmission Distribution Coatings User s Manual WEG Molded Case Circuit Breakers UBW400 ...

Страница 2: ...lating to the safety of personnel and equipment as well as all general and local health and safety laws codes and procedures The recommendations and information contained herein are based on WEG experience and judgment but should not be considered to be all inclusive or covering every application or circumstance which may arise If any questions arise contact WEG for further information or instruct...

Страница 3: ...e for the intended installation by comparing nameplate data with existing equipment ratings and system requirements Inspect the circuit breaker for completeness and check for damage before mounting Uninstalled cover mounting hardware is supplied in a plastic bag with the circuit breaker frame see Figure 2 and Table 2 Flat head thread forming screws Pan head screws Figure 2 cover mounting hardware ...

Страница 4: ...b in 2 2 6 N m 5 If not already installed mount terminals as shown in Figure 4 Secure the terminals to the circuit breaker using a 7 32 inch socket wrench and torque to 6 8 lb ft 8 11 N m After mounting the circuit breaker and before installation of the conductors the terminal mounting screw can be checked or retightened through the terminal when the conductor screw is removed If warning label is ...

Страница 5: ...no voltage is present NOTICE Depending on the equipment configuration the circuit breaker can be mounted using different styles of hardware The following steps describe how to mount the circuit breaker using standard hardware When special hardware is needed for example with the electrical operator the instruction leaflet describing the accessory also describes the special mounting arrangements 6 T...

Страница 6: ... Figure 6 circuit breaker escutcheon dimensions for 3 pole circuit breakers b If circuit breaker includes factory or field installed internal accessories make sure accessory wiring can be reached when the circuit breaker is mounted c Position circuit breaker on mounting surface NOTICE Labels with accesory connection schematic diagrams are provided on the side of the circuit breaker A note should b...

Страница 7: ...Cat No LT3UBW400 are used terminal shields supplied with the terminals must be installed on the circuit breaker Figure 7 Warning label supplied with the kit must be attached to the circuit breaker front cover Mounting slots Terminal cover Dovetails Figure 7 terminal cover installation 9 If required install terminal shield on circuit breaker cover with mounting screws provided 10 After the circuit ...

Страница 8: ...e Figure 8 Push to trip Button Thermal magnetic Trip unit adjustment Button 3 places Handle position indicator Color Red White Green On Trip Off reset On On Trip Off Reset Off International Symbols Figure 8 circuit breaker manual controls 3 2 CIRCUIT BREAKER RESET After an automatic or accessory initiated trip or a manual PUSH TO TRIP operation the circuit breaker is reset by moving the circuit br...

Страница 9: ...ing Adjustment buttons Figure 9 trip unit magnetic adjustment buttons 4 INSPECTION AND FIELD TESTING UBW400 molded case circuit breakers are designed to provide years of almost maintenance free operation The following procedure describes how to inspect and test a circuit breaker in service 4 1 INSPECTION AND FIELD TESTING Circuit breakers in service should be inspected periodically The inspection ...

Страница 10: ... installed 6 Check circuit breaker mounting hardware and tighten if necessary 7 Check area where circuit breaker is installed for any safety hazards inlcuding personal safety and fire hazards Exposure to certain types of chemicals can cause deterioration of electrical connections 4 2 FIELD TESTING Any field testing should be done in accordance with applicable NEMA Standard The instructions for ins...

Страница 11: ...e to the purchaser or user in contract in tort including negligence strict liability or otherwise for any special indirect incidental or consequential damage or loss whatsoever including but not limited to damage or loss of use of equipment plant or power system cost of capital loss of power additional expenses in the use of existing power facilities or claims against the purchaser or user by its ...

Страница 12: ... Phone 233 30 2766490 info zestghana com gh INDIA Bangalore Karnataka Phone 91 80 41282007 info in weg net Hosur Tamil Nadu Phone 91 4344 301577 info in weg net ITALY Cinisello Balsamo Milano Phone 39 2 61293535 info it weg net JAPAN Yokohama Kanagawa Phone 81 45 5503030 info jp weg net MALAYSIA Shah Alam Selangor Phone 60 3 78591626 info wattdrive com my MEXICO Huehuetoca Mexico Phone 52 55 53214...

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