KPM83 series microcomputer comprehensive protection and measurement control devices is based on high-performance DSP processor and embedded real-time operating system, it is a protection and monitoring devices that integrated protection, monitoring and control, communications.

It is suitable for substations, power plants, industrial and mining enterprises, construction and other fields with voltage levels up to 35KV. It has such functions as protection, telemetry, remote mains, remote adjustment and remote control to achieve full control and management of it. , we can provide line protection and monitoring and control, transformer protection and control, motor protection and control, PT protection and control, capacitor protection and control, spare power source automatic throw-in device coupler protection and other product types.

KPM83TD 35KV smart comprehensive transformer differential protection relay is mainly suitable for comprehensive protection and control of transformer differential of 35KV and below.

Product show for transformer differential protection relay

Functions of KPM83TD transformer differential protection relay

Measurement and control functions of KPM83TD transformer differential protection relay

12-wire remote signaling digital input for collection;

Alarm signal (alarm signal, protection action signal, power disappearance signal, reclosing action signal); display unbalanced current in real time.

KPM83TD transformer differential protection relay analog input

I_ah, l_bh, l_ch, l_al, l_bl, and I_cl are the differential protection output currents on the high and low voltage sides as the differential protection quantity.

Technical parameters of KPM83TD transformer differential protection relay

 1. Differential quick-break protection: current setting: 2I_n-12I_n, fixed value error: <5%.
2. Ratio differential protection for second harmonic braking:

    overcurrent setting: 0.2I_n-10I_n, fixed value error: <5%