Product Model

LRB: reach-through current transformer with protective winding

Product Introduction

This product is used with other equipments (such as wall bushing, disconnector bushing, bus line, etc), and it is mainly used to provide current measuring and protective signal.

The product is composed of the secondary winding and shell of the current transformer.

Reference standard

GB 1208-2006 Current Transformer

Product Feature

a.     Superior sealing capability and can be used both in indoor and outdoor.

b.    Can produce the secondary windings according to various kinds of special requirements.

Service Conditions

Can be used in indoor and outdoor.

Ambient Temperature: -50℃~+50℃

Main Performance Index

Rated Primary Current: 50~12000A

Rated Secondary Current: 5A or 1A

Rated Capacity：10~60VA

Accuracy Class Of Measuring Winding: 0.5、0.5s、0.2、0.2s

Accuracy Class Of Protective Winding: 5P、10P、5RP、10RP、TPY

Electrical Test

Polarity test, error test, volt-ampere characteristic test, open circuit test and so on.

Operating Maintenance

The secondary winding should be connected to the ground and it shall not be open circuit when it operates so as to avoid generating high voltage and endangering the safety.

Ordering Information

a.   Provide the rated current ratio, accuracy class of measurement, secondary load, the   outside and inside diameters, height and other parameters.

b.   For the protective winding, it also needs to provide accurate limit parameters.

c.   For the protective winding of TPY level, it also needs to provide a working cycle, short circuit coefficient, accuracy time of maintenance and other parameters.