KPM83T LCD display digital overload overcurrent transformer protection relay

 

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.

 

KPM83T digital overload overcurrent transformer protection relay is mainly used for comprehensive protection, control and measurement of transformers with voltage levels of 35KV and below.

 

Product show for KPM83T transformer protection relay

 

Functions of KPM83T transformer protection relay

 

No.	Protection function	No.	Protection function
1	Quick-break	6	High voltage zero-sequence overcurrent
2	Overcurrent I	7	Low voltage inverse time zero-sequence
3	Overcurrent II	8	PT disconnection
4	Overload	9	Non-power protection
5	Inverse time overload	10

 

Measurement and control functions of KPM83T transformer protection relay

• 14-way remote signaling is opened for collection;
• Remote control of circuit breaker, signal output (alarm signal, protection action signal, power-off signal, quick-break action signal, over-current action signal, zero-sequence over-current action signal, overload alarm signal, self-trip signal, high-temperature alarm signal);
• I_A,I_B,I_C,U_a,U_b,U_c,l_a2,l_b2,l_c2,I₀₁,I₀₂,P,Q,F,COS medium analog; protection event sequence recording (SOE).

KPM83T transformer protection relay analog input

The input analog values are: protection currents l_a2, l_b2, l_c2, I₀₁(high voltage side), I₀₂ (low voltage side) for overcurrent protection and high voltage side zero sequence overcurrent protection; measuring currents I_A, I_B, I_Cfor current monitoring and power calculation; voltage U_a, U_b, U_c as low voltage blocking components and measuring voltage and power.

 

Technical parameters of KPM83T transformer protection relay

 

 

Index	Current fixed value	Time fixed value	fixed value error	Heat capacity coefficient	Prewarning heat capacity coefficient
Content
Definite time overcurrent	0.2In -20In	0s- 60s	<5%
Inverse time overload	0.2In -20In	0s- 60s	<5%	10-2500	10-2500
definite time overload	0.2In -20In	0s- 60s	<5%
High voltage zero sequence overcurrent	0.2In -20In	0s- 60s	<5%
Low voltage zero sequence inverse time overcurrent	0.2In -20In	0s- 60s	<5%	10-2500

 

 

 

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