Overview
This series of low-voltage withdrawable switchgear is a combined cubicle type assembled from standard modules in a factory (FBA), and its technology has reached the international advanced level.
This series of low-voltage withdrawable switchgear is suitable for power plants, substations, petrochemical, metallurgy and steel rolling, transportation and energy, light industry and textiles, and other industrial and mining enterprises, as well as residential communities, high-rise buildings, and other locations, for the conversion, distribution, and control of electrical energy in power distribution equipment of AC 50–60 Hz power systems with a rated operating voltage of AC 660 V and below. This device complies with GB72511 "Low-Voltage Complete Switchgear and Controlgear" and JB/T9961 "Low-Voltage Withdrawable Complete Switchgear and Controlgear" national professional standards, and also complies with IEC439-1, VDE0660 Part 5, and other international professional standards.
Normal Operating Environmental Conditions
1. The ambient air temperature shall not be higher than +40°C and not lower than -5°C, and the average temperature within 24 h shall not be higher than +35°C;
2. Atmospheric conditions: clean air, relative humidity not exceeding 50% at the maximum temperature of +40°C, and higher relative humidity is permitted at lower temperatures, for example 90% at +20°C, but consideration should be given to temperature changes, which may occasionally cause condensation;
3. Altitude not exceeding 2000 m;
4. This device is suitable for transportation and storage within the following temperature range, between -25°C and +55°C, and can reach +70°C for a short time (not exceeding 24 h). Under these extreme temperatures, the device shall not suffer any irreversible damage and shall be able to operate normally under normal conditions;
5. If the above operating conditions cannot be met, the user and manufacturer shall resolve the matter through negotiation;
6. When this device is used on offshore oil drilling and production platforms and in nuclear power plants, a separate technical agreement shall be signed.
Basic Technical Parameters
Electrical Performance
| Rated insulation voltage | 660V(1000)V | |
| Rated operating voltage | 380V, 660V | |
| Maximum operating current of main busbar | 5000A | |
| Rated withstand current of main busbar | 100kA/1s | |
| Rated peak withstand current of main busbar | 220kA/0.1s | |
| Maximum operating current of distribution busbar (vertical busbar) | 1000A | |
| Peak current of distribution busbar (vertical busbar) | Standard type | 105kA(maximum)/0.1s |
| Reinforced type | 176kA(maximum)/0.1s | |
