Open current transformer for inflatable cabinet

It is suitable for current measurement, signal sampling and microcomputer protection of electrical equipment of 10KV AC power system. The current transformer has the characteristics of small size, light weight, open, easy to install, etc. It is widely used in the compact fully insulated ring network switchgear, and is very suitable to form a sampling unit with RTU, FTU and other remote terminal equipment to provide data support for the whole system. During installation, it is directly stuck on the connected inlet and outlet cables, which is simple and quick.

General:

This type of current transformer selects high-quality imported silicon steel sheet with high permeability as the magnetic conductive material, which has the characteristics of divisible iron core and small magnetic circuit loss. Its half-ring type iron core and secondary winding are vacuum-cast with high-quality epoxy resin in a flame-retardant plastic shell, which is damp proof and stable in performance without maintenance.

Technical Data

The performance of products is conformed to IEC61869-1:2007, IEC61869-2:2012 commission requirements
Rated insulation level: 12/42/75kV
Power factor of load: COSΦ=0.8
Rated frequency: 50Hz, 60Hz
Rated secondary current: 5A or 1A

Type	Purpose	Measuring current			Protective current transformer		Double winding current transformer
	Ratio	Accuracy class and rated burden（VA）			Accuracy class and rated burden（VA）		Accuracy class and rated burden（VA）
	Ratio	0.5	1	3	10P5	10P10	0.5	1	10P10	10P5
LMZK-12	505	-	-	2.5	-	-	-	-	-	-
	75/5	-	-	2.5	-	-	-	-	-	-
	100/5	-	2.5	-	2.5	-	-	-	-	-
	150/5	-	2.5	-	3.75	1.5	-	-	-	-
	200/5	2.5	2.5	-	5	2.5	-	-	-	-
	300/5	2.5	2.5	-	5	2.5	-	2.5	-	1.5
	400/5	5	5	-	5	2.5	2.5	2.5	-	2.5
	500/5	5	5	-	5	2.5	2.5	2.5	-	2.5
	600/5	5	5	-	5	2.5	2.5	2.5	-	2.5