Instrument transformer WG seriesencapsulatedlow-voltage
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Characteristics
- Type
- instrument
- Configuration
- encapsulated
- Electrical characteristics
- low-voltage
- Electric power
Max.: 0.03 kVA
(0.0408 hp)Min.: 0.005 kVA
(0.0068 hp)- Primary current
Max.: 400 A
Min.: 150 A
1 A, 5 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) 0,72
Rated insulation level (kV) 0.72/3/-
Rated primary current (A) 150 ip to 400
Rated secondary current (A) 5 or 1
Overcurrent factor 1,2
Accuracy class 0.5S:0.5;1;3
Instrument 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 5x Ith
Class of insulation E
Maximum altitude of installation (m) ip to 1000
Ambient temperatire HI) - 5 up to + 50
Weight (kg) 1.10 up to 125
Specifications IEC 61869-1 & 2
Catalogs
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See all of TWB SA‘s 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.