Overview
XL-21 LV Power Distribution Cabinet is used for power and lighting distribution in three-phase three-wire, three-phase four-wire, and three-phase five-wire distribution systems with AC 50Hz, rated voltage 660V, and transformer capacity of 1000kVA or less for hotels , hospitals , ports , and factories and mines.
It can also be used as a wiring device for switching construction lines, dividing, switching, and marking branch lines , and providing convenience for wiring and line checking. It is mainly used for circuit breakers, current/voltage transformers, transformers, and metering secondary line ter-minals in power plants and substations.
Operating Conditions
1. Ambient temperature: -5℃ ~+40℃ , the measured average temp. i n 24 hours: +35℃;
2. Altitude: ≤2000m;
3. Relative humidity under the highest temp. of 40 : 50%;
4. No vibration and the oblique mounting angle: 5°.
5. The indoor environment shall be non-ash, non-corrosion gas, and rainwater-proof;
Model and meaning
Technical Specification
| No. | Item | Unit | Parameter |
| 1 | Main Circuit Rated Voltage | V | AC380 |
| 2 | Auxiliary Circuit Rated Voltage | V | AC220/AC380 |
| 3 | Rated Frequency | Hz | 50 |
| 4 | Rated lnsulation Voltage | V | 660 |
| 5 | Rated Current | A | ≤800 |
Overall and Installation Dimensions
| Item | Width(A) | Height(H) | Deep(B) | Fonrt and Rear Door(deep B) |
| Floor-mounted Outdoor Power Cabinet | 500 | 700 | 200 | – |
| 600 | 800 | 250 | – | |
| 600 | 1000 | 350 | 400 | |
| 600 | 1200 | 350 | 400 | |
| 700 | 1500 | 350 | 450 | |
| 700 | 1700 | 350 | 450 | |
| 800 | 2000 | 450 | 550 |
