LJM Indoor Busbar Type Zero Sequence Current Transformer CT Earthing Protection Residual CT for power system LJM-1,2,3 manufacturer from China Chongqing Enrich Engineering and Technology Co., Ltd

LJM Indoor Busbar Type Zero Sequence Current Transformer CT Earthing Protection Residual CT for power system

Price:	300.0 USD
Payment Terms:	T/T,L/C,WU,Money Gram
Place of Origin:	Chongqing, China (Mainland)


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Product Detail

Model No.: LJM-1,2,3

Delivery Date: 10 days

Usage: Current

Application: electricity measurement& pr...

Packing: Wooden case

Brand Name: Enrich Engineering

Function: zero sequence/residual curr...

Earthing Protection Current Transformer
Residual CT
Three-Phase Current Vector Sum
Three-Phase Unbalanced Current
Single-Phase Grounding Current

LJM zero sequence current transformer

Type description

LJM-1,2,3

L: Current transformer

J: Earthing/grounding protection

M: Busbar type

1,2,3: Busbar number

Technical data

Technical data 1: for zero sequence protection

Model	Rated primary current Im(A)	Ith/2S(kA)	Dynamic current(kA)	Weight(Kg)	Insulation level(rated voltage/power frequency withstand voltage) (kV)
LJM-1	1750	24/2	60	77	10/30
LJM-2	3000	48/2	120	118
LJM-3	4000	72/2	180	159

Mating with relay: DD-11/60, primary residual current 2.4A, setting current of relay 0.06A, excitation impedance at sec-winding parallel connection≥10Ω

Technical data 2: for microcomputer protection

Secondary connection type	Rated current ratio(A)	Accuracy class	Rated secondary output(VA)
Parallel connection	30/1	10P10	3.75
Series connection	60/1	10P10	7.5

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