Overview
MNS model LV switchgear is suitable for AC 50~60Hz, 660V and below power system. It is applied into power plant, substation, oil field, chemistry industry, metallurgy, mineral enterprise etc. To receive and distribute power with the function of control, protection and monitor. Different types of switch is used inside the cabinet.
The LV Switchgear conforms to GB7251 “LV Switchgear and controlgear” standard and JB/T9661 “LV draw out switchgear” standard.
Operating Conditions
1. Ambient temperature: -5℃ ~+40℃ , the measured average temp. i n 24 hours: +35℃ ;
2. Relative humidity at highest temperature +40℃, 50℃ allowed max. relative humidity at low temperature, for example, +20 is 90℃, it will occur moderate moist due to temperature change;
3. Altitude: 2000m;
4. The device is suitable for transportation and storage as the following temperature: -25℃~55℃. The device should not be suffered from non-recovery damage.
Technical Specification
| Item | Unit | Parameter | |
| Rated Insulation Voltage | V | 660,1000 | |
| Rated Operating Voltage | V | 380,660 | |
| Main Bus Maximum Operating Current | A | 5000 | |
| Main Bus Rated Withstand Current | kA/s | 100 | |
| Main Bus Rated Peak Withstand Current | kA/s | 220 | |
| Vertical Bus Maximum Operating Current | A | 1000 | |
| Vertical Bus Peak Current | |||
| Standard type | kA/100ms | 105(MAX) | |
| Enhanced type | kA/100ms | 176(MAX) | |