Scope of application:
LSKM1L Series residual current circuit breaker(RCCB) is mainly applied to power distribution network of AC50Hz, rated operated voltage up to 400V, rated operate current up to 800A. RCCB has indirect touch protection for human, and protect the device against the fire danger caused by insulation damage and grounding faults.
The product meets the following standards:
GB14048.2-2008
GB/Z6829-2008
GB13955-2005
GB/T22710-2008
Main functions and features:
u Electronic overcurrent trip and adjustable rated current.
u Multiple protections such as overload, short circuit delay, etc.
u Real-time display of current ,voltage and leakage current value.
u Automatic tracking of leakage and real-time monitoring of leakage current of protected line.
u Automatic and manual on-off switch.
u Remote control and bus communication function.
u Intelligent digital circuit.
u Wide temperature working range.
Main Technical parameters:
Specification Type | LSKM1L-125 | LSKM1L-250 | LSKM1L-400 | LSKM1L-630 | |||||
S type | H type | S type | H type | S type | H type | S type | H type | ||
Current shell frame（A） | 125 | 250 | 400 | 630 | |||||
Extreme number | 3P+N, 4P | 3P+N, 4P | 3P+N, 4P | 3P+N, 4P | |||||
Rated operating voltage | AC 400 50Hz | ||||||||
Rated insulation voltage | AC 800 | ||||||||
Rated impulse withstand voltage | 8000 | ||||||||
Arcing distance | ≯50 | ≯50 | ≯100 | ≯100 | |||||
Ultimate short circuit breaking capacity | 35 | 50 | 50 | 50 | 50 | 65 | 50 | 65 | |
Running short circuit breaking capacity | 25 | 35 | 35 | 50 | 35 | 50 | 35 | 50 | |
Rated residual short-circuit capability | 25% lcu | ||||||||
Residual current operating characteristics | AV type | ||||||||
Rated residual operating current | 50/100/200/300/400/500/600/800 MCU Automatic tracking | ||||||||
Residual action time characteristics | Delay type (0.5s 1s 1.5s) | ||||||||
Delay type limit non-actuating time | △t ≥0.06 0.2 0.3:2 |△n | ||||||||
Break time | 0.5s 1s 1.5s | ||||||||
Automatic reclosing time | 20~60 | ||||||||
Operating performance(time) | power on | 1500 | 1000 | 1000 | 1000 | ||||
Power off | 8500 | 7000 | 4000 | 4000 | |||||
Total number | 10000 | 8000 | 5000 | 5000 | |||||
Overvoltage protection value | (220~350) ±5% | ||||||||
Undervoltage protection value | (150~220) ±5% | ||||||||
Joint control delay time | ≤40ms | ||||||||
Communication delay time | ≤200ms | ||||||||