LMZK5 Split Core Current Transformer

LMZK series split core current transformer is suitable for measurement of primary current , or for protection of electrical equipments such as microcomputer in 10KV and 35KV AC power distribution networks. It is widely used in fully insulated ring network switchgears such as ABB-Safe Ring/Safe Plus…and cable distribution boxes. The transformer can be directly installed at the inlet and outlet of the GIS or AIS cables. The semicircular ring core and secondary windings are vacuum poured by insulated resin. This CT is also used for signal acquisition for RTU or FTU.
The split core (easy to open-close type) is convenient for installation (no need to reconstruct the substation power cable networks).

Category:

Description

Product function

  • Split core type structure, which can be installed without changing cables
  • High-quality epoxy resin vacuum casting, excellent mechanical and environmental resistance
  • High-quality stainless steel clamp hoop fastening structure, easy and reliable installation
  • Output terminal type, more concise wiring
  • Dual winding measurement & protection current transformer

TECHNICAL PARAMETERS

Dimensions (D×d×H) 110mm×50mm×100mm
Rated frequency 50Hz
Rated secondary current 5A
Rated burden ≤5VA
Applicable cable outer diameter ≤φ50mm
Rated primary current range 50～600A
Dielectric strength AC3000V，1min
Rated continuous overcurrent 120% of rated current
Polarity and homonym P2 represents the primary polarity terminal,

S1, S2 represent the secondary polarity end,

P2 and S2 have the same polarity (-polarity) at the same instant
Working environment Temperature -25℃～40℃
Humidity ≤90%
Altitude ≤1000m

 

 

TECHNICAL DATA

 

Model LMZK5
Voltage level 10kV
Type Current transformer for measurement Current transformer for protection
Accuracy class 0.5 1 3 10P10 10P5
Current rating
PRI:SEC
Amperes		 Rated burden (VA) Rated burden (VA)
50:1 2.5
75:1 2.5
100:1 2.5
150:1 2.5
200:1 1.5 2.5 1.5 2.5
300:1 2.5 3.75 2.5 3.75
400:1 5 2.5 5
500:1 5 2.5 5
600:1 5 2.5 5
50:5 2.5
75:5 2.5
100:5 2.5
150:5 2.5
200:5 1.5 2.5 1.5 2.5
300:5 2.5 3.75 2.5 3.75
400:5 5 2.5 5
500:5 5 2.5 5
600:5 5 2.5 5

 

ORDERING INFORMATION

 

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