LJM Indoor Busbar Type Zero Sequence Current Transformer CT Earthing Protection Residual CT for power system
| Min. Order: | 1 Set/Sets |
|---|---|
| Trade Term: | FOB,CFR,CIF,CIP,CPT |
| Payment Terms: | L/C, T/T, WU, Money Gram |
| Place of Origin: | Chongqing |
Company Profile
| Location: | Chongqing, China (Mainland) |
|---|---|
| Business Type: | Manufacturer, Trading Company, Distributor/Wholesaler, Service |
Product Detail
| Model No.: | LJM-1,2,3 |
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| Brand Name: | Enrich Engineering |
| Usage: | Current |
| Function: | zero sequence/residual current detection& protection |
| Application: | electricity measurement& protection |
| Packing: | Wooden case |
| Delivery Date: | 10 days |
Product Description
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 connectionâ„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 | 7.5 |