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The CB PWS is a standalone DC power supply designed for operating circuit breakers. This compact and lightweight DC power supply can power the circuit breaker control circuit (trip and close coils, and charging motor) in situations where the substation DC supply is not available.
The CB PWS is powered by a wide AC voltage source (120 -240Vac) and available with factory preset 120Vdc or 240Vdc output.
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The CB PWS' output rating is listed below:
120 Vac Input:
- 120Vdc @ 15A, 10 second duration max ( 5% regulation) or 120Vdc@ 4A continuous (3% regulation)
- 240Vdc @ 7.5A, 10 second duration max (5% regulation)or 240Vdc @ 2A continuous (3% regulation)
240 Vac Input:
- 120Vdc @ 20A, 10 second duration max ( 5% regulation) or 120Vdc@ 4A continuous (3% regulation)
- 240Vdc @ 10A, 10 second duration max (5% regulation)or 240Vdc @ 2A continuous (3% regulation).
DC output is enabled via the power control switch on the front panel. LED indicators show the "Output On", "Output Fault", and "Power Input Available" status on the front panel.
The CB PWS offers several outstanding features:
- very lightweight (14 lbs. / 6.4 Kg)
- thermal and short circuit protected output
- output dc voltage source is isolated from the power input
- wide ac voltage input range (120 Vac to 240 Vac)
The CB PWS is housed in a heavy-duty, impact-resistant plastic enclosure and furnished with a power cord, ground cable, and DC power test leads.
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