GFLZZ1235-20A2 33kv Medium Voltage Current Transformer Manufacturer

current transformer manufacturer

The current transformer of the type GFLZZ1235-20A2 is casting resins and fully enclosed. It is used for metering electric energy and current, relay protection in the electrical system up to rated frequency 50Hz of 60Hz and rated voltage 20kV. The current instrument transformers can be executed according to the standards IEC60044-1, IEC61869-2 and ANSI/IEEE C57.13.

 

Parameters

Technical parameters 
Standards IEC60044; IEC 61869; ANSI/IEEE C57.13
Rated primary current 20-1200A
Rated load ≤20VA
Rated frequency 50Hz or 60Hz
Rated secondary current 5A or 1A
Rated short-time thermal current 80kA, 1S
Rated dynamic current 160KA
Rated insulation level 12/42/75KV
FS ≤10
Mechanical parameters 
Material Epoxy resin
Weight (kg) 32
Operating conditions 
Operating temperature -25°C to +55°C
Daily average temp <+40°C
Storage temperature -40°C to +70°C
Altitude <1000 meters
Condition No existence of severely begrimed, erosive and radioactive gas in the air. Permission of long-term operation under rated current.

Technical parameters

Ratied Primary Current(A) Class Combination Accuracy class and Rated output(VA) Short-time thermal current(kA/S) Rated dynamic current(kA)
20-150 0.2/0.2
0.2/0.5
0.2/10P10
0.5/10P10
0.2/10P15
0.5/10P15
10/10
10/10
10/20
10/20
10/15
10/15
150 I1n 375 I1n
200 31.5 80
300-500 45 112.5
600-800 0.2/0.2
0.2/0.5
0.2/10P10
0.5/10P10
0.2/10P15
0.5/10P15
15/15
15/20
10/20
15/20
10/15
15/15
63 130
1000-1200 80 160

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