3kv 6kv 11kv Medium Voltage Motor Soft Starter Cabinet For Water Pump

Short Description:

Medium Voltage Soft Starter is a high voltage motor soft starter designed with up-to date concept, mainly applicable to the control of and protection for the starting and stopping of squirrel-cage type asynchronous and synchronous motors. The starter is composed of several thyristors in series-parallel, and it can meet different current and voltage requirements.

The product is widely used in electric industry with rated voltage 3000 to 10000V, building materials chemical industry,metallurgy, steel and paper-making industries etc., and can perform well if used together with various kinds ofelectromechanical devices including water pumps, fans, compressors, crashers, agitators and conveyer belt etc., It is the ideal device for starting and protecting high voltage motors.

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Features

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

Specification

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