| Compact® NSF and NSJ 150 to 600 A Circuit Breakers |
| Section |
Dielectric | After testing, the circuit breaker must withstand for one minute a voltage of 1000 V plus twice the rated |
| voltage between: |
| • Line and load terminals with circuit breaker in open, tripped and off positions |
| • Terminals of opposite polarity with circuit breaker closed |
| • Live parts and the overall enclosure with circuit breaker open and closed |
Optional Tests | • High available fault |
| Listing label applied at higher values than the standard; test sequence is as follows: |
—200% calibration
—Interrupting capacity: an opening operation followed by a
The power factor over 20000 A shall be
—Trip out at 250%
—Dielectric at twice the rated test voltage
•100%
| The circuit breaker is submitted to additional temperature tests performed as standard tests, except |
| that the circuit breaker is installed in an enclosure. The dimensions and possible ventilations shall be |
| recorded and shall be marked on the circuit breaker. |
Tests On | Shunt trip and Undervoltage |
Accessories | endurance and dielectric tests. |
| Overvoltage |
| without damage (this test does not apply to a shunt trip with an "a" contact connected in series). |
| Operation: |
| Shunt |
| fault protection shall operate at 55%). |
| Undervoltage |
| circuit breaker between 35 and 70% of its rated voltage and shall |
| is at 85% or more of its rated voltage. |
| |
| current" operations of the circuit breaker. |
| Auxiliary and Alarm |
| overload, endurance and dielectric tests. |
| Overload |
| voltage, with a |
| |
| factor in ac, and |
| auxiliary switches, and 10% of this number for alarm switches. |
| Motor |
| for the circuit breaker endurance tests. The first 25 operations shall be conducted at 85% of the motor |
| operator voltage rating. The circuit breaker is to be tripped during these tests. The next 25 operations |
| shall be conducted at 110% of the motor operator voltage rating. The balance shall be completed at |
| rated voltage without tripping the circuit breaker. |
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