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NKF voltage transformers for measurement

Voltage transformers for measurement are designed to transmit measuring signals to metering and/or protection and control devices in AC systems at industrial frequency. Suitable for use in 110 and 220 kV power networks.

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Description

Power range

Characteristic

Technical characteristics - 110
Parameter	Value
Primary voltage, V	110000/√3
Secondary voltages, V	100/√3; 100
Maximum operating voltage, kV	126
Accuracy classes of measuring windings	0,2; 0,5; 1,0; 3,0
Accuracy classes of protection windings	3Р; 6P
Rated secondary loads	-
Measuring windings, V∙A	10; 30; 50; 75; 100; 120; 150; 200; 300
Protection windings, V∙A	до 300
Additional winding, V∙A	до 300
Rated frequency, Hz	50
Weight, max, kg	695
Oil weight, kg	165
Dimensions, mm	410x1825

Climatic category O1 according to GOST 15150-69, operating temperature range from −60 to +55 °C.
Altitude above sea level, m: 1000/2000/3000.

Technical characteristics - 220
Parameter	Value
Primary voltage, V	220000/√3
Secondary voltages, V	100/√3; 100
Maximum operating voltage, kV	252
Accuracy classes of measuring windings	0,2; 0,5; 1,0; 3,0
Accuracy classes of protection windings	3Р; 6P
Rated secondary loads	-
Measuring windings, V∙A	10; 30; 50; 75; 100; 120; 150; 200; 300
Protection windings, V∙A	до 300
Additional winding, V∙A	до 300
Rated frequency, Hz	50
Weight, max, kg	785
Oil weight, kg	130
Dimensions, mm	600х3370