Detailed
introduction:
LZW series current transformers are
suitable for installation on the three-phase outlet of 10Kv on-column switches.
They can measure and protect zero-sequence and three-phase currents. According
to user requirements, products with different levels of different ratios can be
provided.
The
core of the zero sequence and measuring winding uses a new magnetically
permeable material (ultra-microcrystalline material), which has high magnetic
permeability, low magnetic induction and excellent stability, ensuring high
measurement accuracy of the transformer. The core of the protective winding is
processed by advanced technology using high-quality imported silicon steel
sheets to ensure a high accuracy limit coefficient. Silicone rubber is used as
the main insulation material, which has excellent insulation, water repellency
and aging resistance; high-quality epoxy resin is used between the winding and
the main insulation, and between the winding and the winding to ensure high
insulation between different windings, stable product performance and
maintenance free product.
The series of transformers are
divided into two models, type A and type B:
Type A is an arc-shaped interface that can
be docked with a column switch;
Type B is a flat interface.
Dimensions:
The rated current ratio, accuracy level and rated load are shown in the following table:
Current transformers with different specifications and parameters can be customized according to user requirements
|
MODEL
|
LZW32-10/120
|
|
Rated primary current
|
Single winding accuracy and rated load (VA)
|
|
0.2S
|
0.5
|
5P20
|
10P10
|
10P
|
|
50
|
|
2.5
|
|
2.5
|
5
|
|
75
|
|
2.5
|
|
2.5
|
5
|
|
100
|
|
2.5
|
|
2.5
|
5
|
|
150
|
|
5
|
|
5
|
7.5
|
|
200
|
2.5
|
5
|
2.5
|
5
|
10
|
|
300
|
2.5
|
5
|
2.5
|
5
|
10
|
|
400
|
5
|
10
|
5
|
10
|
15
|
|
500
|
5
|
10
|
5
|
10
|
15
|
|
600
|
10
|
15
|
5
|
10
|
15
|
|
800
|
10
|
15
|
5
|
10
|
15
|
Technical parameters： Conditions:
Rated frequency：50Hz/ 60Hz；， Ambient temperature：-35℃—+65℃
Rated secondary current：5A/ 1A； Daily average temperature：≤40℃。
Power frequency withstand voltage 42Kv/ 1min; altitude:≤1000m
Rated expansion current：120%In； atmospheric conditions：no serious pollution
Executive standard： GB1208-2006。
Wiring schematic: