1. Why us

a.We are professional supplier for neutral protection equipment of electric system.

b.Neutral grounding products are regarded as the No. 1 brand of the country.

c.Strong R&D team  provide you with the most professional solutions and technical service.

d. Exquisite production process provide you with high-quality production.

e. Strong production capacity ensure  timely delivery.

2. Application

This product is used in 6KV~66KV systems whose neutral point is ungrounded to limit the arcing currents during ground faults. It can monitor grounding capacitive current in real time, and make real time tracking and an auto compensatation to the current, then the fault point remnant current is less than 5A and the arc grounding overvoltage is restrained accordingly.

3. Specifications :

a. Ambient temperature: -25℃～55℃

b. Altitude: less than 1000m(if the height exceeds 1,000m, please indicate it when placing orders

c. Relative humidity: less than 90% (25℃)

d. Location: outdoor/indoor

e.Power supply to the control cubicle:380V(3-phase, 4-line)

f.Time of the excitation current reach the MAX. Value from: no more than 20ms

g.Inactive power's grounding remnants current under work frequency: less than 5A

h. Compensation dispel harmonic degree when single-phase grounding: less than 5%

i. Package: Fumigation-free woodiness packaging

4.Advantage

 a. full-statically structured free of any movable components inside

b.Compensation response speed is not higher than 20ms

c.Electric control is steplessly and continuously adjustable

d. Automatically track and scan the neutral voltage and capacitance current

e. Compensation current allows an extensive regulation range, ratios of both upper and lower limits reach to 6-10 times

d.Dynamic compensation, no damping resistor is required

f.Automatic or manual switchover

g. Allowable configuration of 422/485 serial interfaces as required by the user

h. Single-phase grounding line selection unit is optional for the device to monitor multiple feed branches

5.Structure:

a. Control cabinet

b. Biasing magnetic arc-suppression coil

c. Grounding transformer

6. Regular Technical Particulars for reference

7. Ordering information

a. Rated system voltage,rated system frequency

b. The upper and lower limit of compensation current

c. Whether grounding transformer is needed;

 if need please provide following data:  

Rated capacity; rated voltage; tapping range of high voltage; impedance voltage; connection group; whether secondary load is need, if need please provide the data of secondary.

d. Protection grade of arc suppression coil grounding transformer