WDH-31-230 series motor protection controller (hereinafter referred to as controller or WDH) is suitable for three-phase low-voltage AC motor applications with rated frequency of 50/60Hz, rated voltage up to 690V AC, and rated current up to 800A.

The product has functions such as measurement, control, protection, management, and communication. It works in conjunction with circuit breakers, contactors, soft starters, etc. to provide comprehensive protection and control for the motor. It is an ideal choice for intelligent MCC.

This series of controllers consists of two parts: the controller body and the protective current transformer.

Application Scenario

• Three phase low-voltage AC asynchronous motor

• Motor independent control box or MCC control cabinet

• Application of forward and reverse rotation or voltage reduction starting

• Industrial automation sites, such as transmission and mixing systems

• Application of fire water pumps and fans

Product Features

• Full power measurement, protection uses instantaneous data, and display uses average data.

• Built-in multiple protection functions, the protection's on/off, alarm or trip functions can be set arbitrarily.

• Rich starting control, single step starting (direct/bidirectional, etc.), two-step starting (star-delta, etc.).

• Immediate restart after power shake, batch restart after undervoltage, and power-on self-start ensure uninterrupted operation of the motor.

• The power supply adopts supercapacitor energy storage, and the auxiliary power supply can work continuously for 5 seconds after power failure.

• 8 programmable switch inputs and 5 programmable relay outputs.

• Flexible installation method, reasonable appearance dimensions, can be installed in 1/4 drawer cabinets.

About Elecnova/Sfere Electric

Elecnova / Sfere Electric a leading manufacturer and solution provider of Power quality analyzer / Energy analyzer / kWh energy meter / Multi circuit power monitoring system / EV charger metering / Digital power meter / Motor controller / Busway temperature sensor / Harmonic Filter / Power factor correction / Low Voltage power distribution panel / Cloud view Power monitoring system / Energy Storage System.