Rơ le bảo vệ động cơ Jiangsu Sfere WDH-31-210

WDH-31 motor protection controller intelligent device

Selection considerations

When you choose WDH-31-213 motor controller, do you need to increase the residual current (leakage) protection function,

This function is optional.

If necessary, choose according to the following requirements:

When the current I≤100A, an external SHI-ZT30 residual current transformer shall be used , one for each motor.

When the current I>100A, an external SHI-ZT100 residual current transformer shall be used , one for each motor.

WDH-31-210 motor protection controller can provide up to 5 programmable switch inputs (dry contacts), 4 programmable

Cheng relay outputs, all opening out into the programmable features are provided to meet the different requirements of the scene protection control, all the protection

The function can set the alarm value and the action value at the same time, and can be turned on and off separately.

The actual working conditions are set, and the power is not lost.

11 protection functions

5 programmable switch inputs

4 programmable relay outputs

Full Chinese man-machine interface, convenient parameter setting

The anti-shake function module can be added, and the maximum power failure time can reach 15s

Protector body

Split type built-in transformer

SHI300-I(200A)

SHI-ZT40 external current transformer

Residual current transformer

SHI-ZT30

SHI-ZT100

Typical wiring diagram for two-way starting (pulse mode)

Typical wiring diagram of direct start (pulse mode)