| Brand | ROCKWILL |
| Model NO. | Low Voltage Withdrawable Switchgear for Power Plants |
| Ingress Protection | IP30 、IP40 |
| Rated frequency | 50/60Hz |
| Series | GCK |
GCK LV withdrawable switchgear is a modular low-voltage distribution assembly designed for three-phase AC 50/60 Hz systems with rated voltage up to 380V and busbar current up to 4000A. It integrates Power Center (PC) and Motor Control Center (MCC) functions in a compact, drawout configuration. Functional compartments are isolated for safe operation and fault containment. Withdrawable drawers enable quick maintenance, replacement, and isolation without full system shutdown. Complies with IEC 61439-1 / IEC 61439-2 and GB/T 7251.1.
| Rated working voltage | 380V / 400V (AC) |
| Rated insulation voltage | 660V |
| Rated frequency | 50 / 60 Hz |
| Rated current (horizontal busbar) | Up to 4000A |
| Rated current (vertical busbar) | 630A / 800A |
| Drawer unit rated current (main circuit) | 200A / 400A |
| Rated short-time withstand current (Icw) | 50 kA / 1s |
| Rated peak withstand current (Ipk) | 105 kA |
| Power-frequency withstand voltage (1 min) | 2500V |
| Protection level | IP30 / IP40 |
| Condition | Value |
|---|---|
| Ambient temperature (max.) | +40°C |
| Ambient temperature (24h avg.) | ≤35°C |
| Ambient temperature (min.) | -5°C (indoor) |
| Altitude | ≤1000 m |
| Relative humidity (daily avg.) | ≤95% |
| Relative humidity (monthly avg.) | ≤90% |
Q:What is withdrawable switchgear?
A:Withdrawable switchgear is a type of electrical equipment crucial for power distribution systems. It features components that can be easily removed or inserted, like circuit breakers. This design allows for convenient maintenance, replacement, and isolation of faulty parts without shutting down the entire system. It ensures enhanced safety and reliability, minimizing downtime in industrial, commercial, and utility applications.
Q: What is the difference between fixed and withdrawable switchgear?
A:Fixed switchgear has components permanently mounted, offering simplicity and lower cost. Withdrawable switchgear, on the other hand, allows for easy removal of parts like circuit breakers. This enables quicker maintenance, isolation of faults, and reduced downtime, making it more versatile for complex power systems.
Q: What is the main interlock on withdrawable switchgear?
A:The main interlock on withdrawable switchgear is a safety mechanism. It prevents incorrect operations to avoid electrical accidents. For example, it stops the breaker from being withdrawn when it's still carrying current. Also, it ensures that the switchgear can't be energized until the breaker is properly inserted and locked, safeguarding both equipment and personnel.
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