Application:

It is used to soft start and protect of H.V. squirrel-cage motor or asynchronously-started synchronous motor,with voltage rating from 3kV ~ 15KV, especially suitable for the industrial enterprises with insufficient power capacity.

Design Feature:

• Predictable: Simulation software is used to analyze the  the                starting process.
• Adjustable: The starting time, the resistance of the liquid resistor can be adjusted
• Controllable: The resistance of the liquid resistor can be adjusted so the whole starting process and the power systems voltage are also controllable
• Repetition Availability: The initial value of the liquid resistor can be adjusted based on the ambient temperature and the proceeding starting temperature so as to maintain the stability of the starting process
• Able to Remote control: Which makes available the remote communication and central control and meets the requirements by DCS control system
  Reliable: Smooth starting process with no impact to mechanical system, motor and power systems
  
  Standards adopted
  Technical requirements for high voltage switch cabinet and control device 
  IEC 60694:1996  3~35kV AC metal-cased switch device 

          IEC298: 1990  High voltage AC motor liquid soft start equipment

Technical parameters:

• Rated voltage(kv):3-15KV
• 1-minute impulse withstand voltage (kv):10/18,20/23,28/32 (Phase voltage) 12,15,18 (Line Voltage)
• Starting current (A):1.5-3.5 In
• Starting time (s):10-60-120 (adjustable on site)
• Normal working temperature of liquid resistor:0-70℃
• Continual starting attempt (times):3-4 (below 1250kw); 2-3 (above 1250kw) (ambient temperature 25℃)
• Protection level: IP20, IP30