Medium Voltage Soft Starter Panel For Heavy Duty Motor Control
1. Free of maintenance: Thyristor is an electric device without contacts. Different from other kinds of products that need
frequent maintenance on liquid and parts etc., it turns the mechanical lift into the service life of electronic components, so it needs no maintenance after running for many years.
2. Easy installation and operation: A complete system for controlling and protecting the starting of motor. It can put into
operation only with the power line and motor line connected. The whole system can be tested electrically under low voltage before operating with high voltage.
3. Backup: The starter comes equipped with a vacuum contactor which can be used to start the motor directly in the inside.If fails, the vacuum contactor can be used to start the motor directly to ensure the continuity of the production.
4. High voltage thyristor is a component of major loop, equipped with voltage
balancing protection system and over-voltage protection system.
5. Comes equipped with an electromagnetic blocking device for fear of entering the high voltage device in the electrified
state.
6. Advanced optical fiber transmission technique realizes the triggering detection of high voltage thyristor and the isolation between LV control loops.
7. DSP microcontroller is used to perform central control which is real-time and high efficient with high reliability and excellent stability.
8. LCD/touch screen display system in both Chinese and English with human-friendly operation interface.
9. RS-485 communication port can be used to communicate with the upper computer or centralized control center.
10. Aging experiments are made on all circuit boards
| Basic parameters | |
| Type of load | Three phase squirrel cage asynchronous and synchronous motors |
| AC voltage | 3kv, 6kv, 10kv, 11kv |
| Power frequency | 50/60hz±2hz |
| Phase sequence | Allowed to work with any phase sequence |
| Bypass contactor | Built-in bypass contactor |
| Control power supply | AC220V±15% |
| Transient over voltage | Dv/dt snubber network |
| Ambient condition | Ambient temperature: -20°C -+50°C |
| Relative humidity: 5%----95% no condensation | |
| Altitude less than 1500m (derating when altitude is
more than 1500m) |
|
| Protection function | |
| Phase lose protection | Cut off any phase of primary power supply in course of starting |
| Over-current protection | Operational over-current protection setting: 20--500%Ie |
| Unbalanced current | Unbalanced current protection: 0-100% |
| Overload protection | 10a, 10, 15, 20, 25, 30, off |
| Over-voltage protection | 120% higher than primary voltage |
| Under-voltage protection | 70% lower than primary voltage |
| Communication | |
| Protocol | Modbus RTU |
| Interface | RS485 |
