LMZD-20

Category:

10 ~ 35kV current transformer

LMZD-20

Model meaning

Model Code	L	M	Z	D	20
Encoding content	Current transformer	Busbar type	Pouring	With protection level	Rated voltage

Indoor LMZD-20 type epoxy resin cast insulation pillar type fully enclosed current transformer, suitable for power measurement, current detection and relay protection within 20kV and AC 50/60Hz, suitable for air insulated switchgear.

Technical parameters

Rated primary current (A)	Rated secondary current (A)	Accurate Level Combination	Capacity (VA)	Rated short-time thermal current (kA/s)	Rated dynamic stability current (kA)
6000	1（5）	0.5/0.5/0.5/0.5	60/60/60/60	50 ka/3s	125
6000	1（5）	5P20/5P20/5P20	30/30/30	50 ka/3s	125

Products meet the standard GB20840.1, GB20840.2, IEC61869-1, IEC61869-2

If users have special requirements, they can be determined after consultation with our company.

The above technical parameters are not the final technical commitment, please be confirmed by our technical personnel.

Product Information

Product Description

Conditions of use

Installation location: indoor.

Ambient temperature:-25 ℃ ~ 40 ℃, daily average temperature is not more than 30 ℃.

Altitude: ≤ 1000m, higher altitude can be selected as required.

Humidity: The maximum relative humidity at room temperature is 95%.

Pollution severity: Grade II.

There shall be no violent vibration or collision at the installation site.

The installation site is free of gas, steam, chemical deposition, explosion and corrosive media that seriously affect the insulation of the transformer.

Structural Overview

Pillar type, totally enclosed. Epoxy resin cast insulated current transformer.

The primary terminal is identified as P1-P2, and the secondary terminal is identified as 1S1-1S2,2S1-2S2. This model has 8 secondary terminals and supports up to 2 tapped secondary windings.

Technical Data

The electrical voltage of the equipment is 20KV, and the maximum operating voltage is 24kV. 1. power frequency withstand voltage of secondary winding and grounding is 65kV/60s, and power frequency withstand voltage of secondary winding and grounding is 3kV/1min.

Lightning impulse withstand voltage 125 KV.

Other requirements shall be in accordance with GB20840.1, GB20840.2, IEC61869-1 and IEC61869-2.

Application Case