THT-LJK120J Zero-sequence Current Transformer

1.high precision 2.good linearity 3.safe operation 4.artsy exterior 5.convenience installment,fixing space saving

1.Service conditions:

1.1 Highest temperature: +80°C;

1.2 Daily average temperature: ≤+60°C;

1.3 Lowest temperature: -20°C.

1.4 Height above sea level: ≤1000m (When specially orders for plateau using)

1.5 Relative humidity: <85%

2. Main data about products

2.1 AC voltage: ≥0.4kV (electric cable)

2.2 Electric network frequency: 50Hz

2.3 Homonymy end: The primary side is “L1”. The secondary side is “ K1”  

2.4 The model, the data and the outlook sizes see the graph.

3. Installment

3.1 The unit transformer has no limit of the cable laid or not, the concrete method as follows:

3.1.1 Dismantles the joint sheeting of "K’1/" " K’2";

3.1.2 Loosening and dismantling the two inner hexagon bolts, then the transformer can be divided into two parts;

3.1.3 The transformer is wrapped on the electric cable, polishes two contact faces, lightly spreads anti-rust oil, twists in the hexagon bolt after corresponding the two parts, the two parts must to be together in order to avoid effecting performance;

3.1.4 Unite the joint sheeting to fix on "K’1/" " K’2" ;

3.1.5 The two parts of the unit transformer cannot be exchanged with others of them.

Note:Φ8.5 X 4 bores are pass bores ,B,C is the size within the four bores; the transformer can be installed horizontally.We suggest using the M6 bolts to install the transformer.

4.Parameter list 

Model	Current Ratio (A)	Accuracy Class	Rated Output (VA)(COS φ=0.8  Lag )	Accurate Limiting Factor	Short-time Thermal Current KA-S	Shape size mm
						Bore Diameter φ	Length	Highness	Thickness	Ground Feet Center Distance	Ground Feet Inner Screw Bore	B	C
THT- LJK 120J (Unit)	50/1 50/5	10P	1; 2.5; 5	5;10	5-1	120	235	210	60	215	M8	175	153±2
	75/1		10	5
	75/5			10	5-1	120	275	250	75	255	M10	202	179±2
	100/1 100/5		1; 2.5; 5	5;10	6.5-1	120	235	210	60	215	M8	175	153±2
	150/1		10	5
	150/5			10	10-1	120	275	250	75	255	M10	202	179±2
	150/1		20	5;10
	150/5		30
	200/1 200/5		1; 2.5; 5	5;10	13-1	120	235	210	60	215	M8	175	153±2
	250/1 250/5		20	5
				10	20-1	120	275	250	75	255	M10	202	179±2
	300/1 300/5 And upwards		30	5

5.When order, please supply:

5.1 Product model, inner bore diameter(mm);

5.2 Primary zero sequence current, secondary sequence current (or current ratio)

5.3 Secondary-side loads capacities or loaded impedance;

5.4 Accurate limiting factor, accuracy class (if there is).

(According to the customer’s demand, our company may design each kind of zero sequence current transformers with different specification and sizes.)

THT-LJK120J Zero-sequence Current Transformer