LJ- Φ 75 type zero sequence current transformerDetailed product description：

The LJ - Φ 75 zero sequence current transformer is suitable for grounding protection of power cables in small grounding current systems indoors, with a rated frequency of 50HZ or 60HZ and a rated voltage of 35KV and below. Compared to this type of zero sequence electricity

Model meaning
LJ-Φ75
L-Current Transformer
J-For grounding protection
The upper limit value of the outer diameter of the three-phase cable with a diameter of 75

Structure Introduction
The iron core of this series of zero sequence current transformers is annular, and the secondary winding is uniformly wound on the iron core. The iron core is clamped with clamps, which are equipped with mounting holes.
Technical Specifications
The primary insulation of this series of zero sequence current transformers is guaranteed by cables, and the product only assesses the insulation performance of the secondary winding. The secondary winding can withstand a 3KV power frequency withstand voltage to ground.
The sensitivity of this series of zero sequence current transformers meets the requirements in the following table:

model	Connecting wire resistance （Ω）	Relay starting current （A）	sensitivity （A）	Relay scale value （A）	rated current ratio （A）
LJ-Φ75	one	zero point one	6-10	0.1-0.2	30/1

Appearance and installation dimensions

The relay model used in conjunction with the current transformer is DL-11/0.2 type.

LJ - Φ 75 type zero sequence current transformer