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.
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.
CB PWS是独立的直流电源,专为操作断路器而设计。这种紧凑轻便的直流电源可以在变电站直流电源不可用的情况下为断路器控制电路(跳闸和闭合线圈以及充电电机)供电。
CB PWS由宽交流电压源(120 -240Vac)供电,可提供工厂预设的120Vdc或240Vdc输出。
CB PWS的输出等级如下:
120 Vac输入:
- 120Vdc @ 15A,最大持续时间10秒(5%调节)或120Vdc @ 4A连续(3%调节)
- 240Vdc @ 7.5A,最大持续时间10秒(5%调节)或240Vdc @ 2A连续(3%调节)
240 Vac输入:
- 120Vdc @ 20A,10秒持续时间最大值(5%调节)或120Vdc @ 4A连续(3%调节)
- 240Vdc @ 10A,10秒持续时间最大值(5%调节)或240Vdc @ 2A连续(3%调节)。
通过前面板上的电源控制开关启用直流输出。LED指示灯显示前面板上的“输出开启”,“输出故障”和“电源输入可用”状态。
CB PWS提供了几项功能:
- 非常轻(14磅/ 6.4公斤)
- 热和短路保护输出
- 输出直流电压源与电源输入隔离
- 宽交流电压输入范围(120 Vac至240 Vac)
CB PWS安装在一个耐用的抗冲击塑料外壳中,配有电源线,接地电缆和直流电源测试引线。
CB PWS
输出电压固定的直流供电电源(输出电压为120VDC或者240VDC)
产品功能和性能:
主要适用于实验现场条件受限,导致无法提供断路器测试用电源,从而替代变电站供电电源给断路器操作回路供电。
产品卖点:
1)直流输出电压为定值( 120 Vdc 或者 240 Vdc,需出厂时设定);
2)装置电源的交流输入电压范围非常宽广(120-240VAC);
3)重量轻便(6.4公斤),配有过热保护和短路保护。
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