Instrument transformer WK seriesencapsulatedlow-voltage
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Characteristics
- Type
- instrument
- Configuration
- encapsulated
- Electrical characteristics
- low-voltage
- Electric power
Min.: 0.005 kVA
(0.0068 hp)Max.: 0.03 kVA
(0.0408 hp)- Primary current
1 A, 5 A
Min.: 25 A
Max.: 120 A
Description
TWB SA manufactures all types of low voltage instrument transformers, current and voltage, 0.75kV and 1 kV, for indoor as well as for outdoor applications, according to IEC 61869-1. They are window, wound or split core type. They are either encapsulated by a high grade flame self-extinguishing polycarbonate housing or resin impregnated.
Highest voltage for equipment (kV) 072
Rated insulation level (kV) 0.72/3/-
Rated primary current (A) 25 up to 120
Rated secondary current (A) 5 or 1
Overcurrent factor 12
Accuracy class 0.5S : 0.5 ; 1 ; 3
Instrunent security factor 5 or 10
Rated burden (VA) 5 up to 30
Rated frequency (Hz) 50:60
Rated thermal short-time current (kA) Ith = 60 x In
Rated dynamic current (kA) Idyn - 2.5 x Ith
Class of insulation E
Maximun altitude of installation (m) up to 1000
Ambient temperature f=C) - 514) to + 50
Weight (kg) 0.80 up tp 1.60
Specifications IEC 61869-1 & 2
Catalogs
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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.