Current transformers TZLM-600 (ТЗЛМ-600)

Current transformers TZLM-600 (ТЗЛМ-600)

Zero-phase-sequence current transformer TZLM-600Description

Transformers in complect with signal device (USZ-3C) are intended for detection of damaged powertransmision line 6-10 kV with onephase fault of network with insulated and compensated midpoint wire.

Transformers are intended for embedding in factory assembled switchgears.

Transformers are manufactured in climatic version Y(moderate) location category 2 according to GOST 15150 and are intended for operation under the following conditions:

  • altitude above sea level - no more than 1000 m;
  • sorrounding environment temperature during operation from minuf 45°С up to plus 55°С taking in account overheating inside switchgear;
  • relative air humidity no more than 98% at 25°С;
  • surrounding envoronment should be nonexplosive, corresponding to atmosphere II according to GOST 15150, without dust, chemicaly active gasses and steams in concentracions able to destroy metal covering ind insulation;
  • mounting in any position during operation;
  • transformers correspond to operating conditions M6 according to GOST 17516.1. 

Table 1. Technical data

Parameter

Value

Rated voltage, kV

10

Rated primary current, A, no more

200

AC current frequency, Hz

50

Transformer ratio

460/1

One-second thermal current, A 20

Weight, kg

12 max

Table 2. Dependence of secondary current from primary current with connected protection device 

Parameter

Value

Primary current, A

5

10

15

20

Secondary current, mA

8

20

30

38

General view of transformer (drawing)