KJZ-1900/1140.660-5.2 矿用隔爆兼本质安全型多回路真空馈电中开关 （KJZ-1900 / 1140,660-5, 2 mining flameproof and intrinsically safe multi-circuit vacuum switch）
Product Features
Provide easy maintenance due to chassis design, and flexible accessibility via both front and rear cover. Main circuit is fitted with energy-saving circuit breaker, which is electrically closed but mechanically held. Output and input parts are located in different compartments. Drives powered via different isolators are located in different compartments, which also support independent operation and maintenance.
Uses
KJZ-1900/1140, 60-5, 2 mining FLP & I.S. multi-circuit vacuum switch is suitable for hazardous and explosive underground mining environment. It is used as distribution main switch, branch switch, and motor switch. When working with single phase 127V power supply and coal drilling protection, the product is able to used for external lighting,control system and coal drill.
Parameters
|
Main circuit |
|
|
Rated voltage |
1140V, 660V |
|
Rated current |
1900A |
|
Rated frequency |
50Hz |
|
Rated short-circuit breaking current |
1140V, 7.5kA (COS =0.3) |
|
Operation mode |
electrical closing, braking, manual braking |
|
Main output circuit |
1140V, 5 off, 400A per circuit, 660V, 2 off, 400A per circuit |
|
Auxiliary circuit |
|
|
Rated voltage |
127V |
|
Auxiliary transformer capacity |
2KVA, 1140V (660V) /127V (single phase) |
|
Rated frequency |
50Hz |
|
Coal drilling protection |
|
|
Connection group |
Y, △/△ |
|
Rated voltage |
1140V, 660V/133V |
|
Rated frequency |
50Hz |
|
Rated current |
1.27A/10.8A |
|
Coal drill transformer capacity |
3 x 2.5KVA |
|
Drill power |
1.2KW |
|
Output circuit |
3 off |
|
Cable inputting |
The cable inputting device: the main circuit B5, compatible with φ56 ~ 78mm |
|
Dimensions(mm) |
3110 x 1335 x 1544 |
|
Weight |
6000Kg |