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Mine Explosion-proof and Intrinsically Safe High-Voltage Vacuum Electromagnetic Actuator
Applications
The high-voltage vacuum electromagnetic actuator is suitable for control of direct starting or stopping three-phase squirrel-cage induction motor in insulated neutral or arc suppression coil grounding power supply system under the coal well with explosive gases and coal soot, with the rated voltage of 10kV, rated frequency of 50Hz and rated current of 400A. Besides, its also suitable for protection of the
motor and relevant circuit.
Features
1. The advanced CPU technology is adopted in the protector, which has enhanced function independence of individual parts and practicability of the system. Besides, the high-resolution A/D converter and the detection method of single measuring range are also used in the device, which has greatly enhanced the accuracy of data collection;
2. It adopts blue-backlight Chinese LCD display, which enables data display and all operations more intuitive;
3. It has the function of detection and display of the power factor and degree of imbalance between the phases as well as display of electricity consumption (active component) and real-time clock and so on;
4. It can provide protection in such cases as overload, short circuit, electricity leakage, insulation monitoring, overvoltage, undervoltage, three-phase imbalance etc.;
5. It has the RS485 communication function, which can network 2~999 protectors into the LAN or Internet with connectors.
Main technical parameters
Rated voltage | 3.3KV6KV10KV |
Maximum working voltage | 3.6KV7.2KV12KV |
Rated current | 50A100A 200A 315A 400A |
Rated frequency | 5OHZ |
Rated short-circuit breaking current | 3.2KA |
Rated short-circuit switching current | 4KA |
Rated thermal stable current (effective value) | 4KA |
Rated peak withstanding current | 10KA |
Rated short-time withstanding current | 4KA |
Rated thermal stable time | 2s |
Rated breaking times of the short-circuit current | 25 times |
Rated switching times of the short-circuit current | 100 times |
Rated thermal stable time | 4s |