GCK Low-Voltage Withdrawable Switchgear

GCK low-voltage withdrawable switchgear is widely used in power distribution center PC and motor control center MCC of power plants, substations, factories and mining enterprises and high-rise buildings, as AC 50-60Hz, rated working voltage of 660V and below, rated current of 4000A and below in power generation, power supply system power distribution, motor centralized control, reactive power compensation use of low-voltage complete sets of power distribution devices. GCK switchgear conforms to IEC60439-1 "Low-voltage switchgear and control equipment", GB7251.1-1997 "Low-voltage switchgear and control equipment", GB/T14048.1-93 "General Principles for Low-voltage switchgear and control equipment" and other standards.
2. Environmental conditions: 1. The
ambient air temperature is not higher than +40 °C, not lower than -5 °C, and the average temperature within 24h shall not be higher than +35 °C.

2. Indoors without dust, corrosion and rainwater, the altitude of the use site shall not exceed 2000m;

3. The relative humidity of the surrounding air does not exceed 50% at a maximum temperature of +40°C3, and a large relative humidity is allowed at lower temperatures, such as 90% at +20°C°C, taking into account the effects of condensation that may occur occasionally due to changes in temperature

4. When the device is installed, the slope with the vertical plane does not exceed 5 degrees, and the whole group of cabinets is relatively flat;

5. The device should be installed in a place where there is no violent vibration and impact and where the electrical components are not subject to undue corrosion.
Three: technical parameters 

2. The main switch has three stages (instantaneous, short delay and overload) protection, and the second stage (instantaneous, overload) protection of the next level of the main switch, which is safe and reliable

3. The main switch and bus tie switch can be installed with self-throwing and switching devices according to user needs.

4. The main switch of the feed circuit has instantaneous and overload protection, and the user needs to install leakage protection.

5. The motor control circuit has the functions of short-circuit instantaneous, overload, under-voltage release and phase-off protection.

6. The main switch of lighting and household appliances has instantaneous, overload and leakage protection, which is especially suitable for power supply of mobile appliances such as portable grinders in power stations.

7. The receiving circuit is equipped with an ammeter, active and reactive energy meters. The 250A and above feed circuits can be equipped with or without current and watt-hour meters, and other circuits of about 37KW or 60A are equipped with ammeters.

8. Equipped with lights and alarm devices in case of accidents.