Metal-Clad Voltage Transformers
12 – 36 kV
Zelisko's metal-clad voltage transformers are maintenance-free single-pole insulated cast-resin transformers for indoor application in a touch-proof metal enclosure. They are mostly used for gas-insulated switchgear and comply with various national and international standards (IEC 60044-2, VDE 0414, DIN 42600, ÖVE-P20, ANSI, GOST etc.).
These voltage transformers can be delivered with various primary contacts according to EN 50181: Inner-cone-system (plug and socket) as well as outer-cone-system (plug).
type ESA12-36: with outer-cone-system, plug type A, B or C (max. 24kV for plug type A)
type EYB12-36: with inner-cone-system, socket size 1 or 2
type EYS12-36: with inner-cone-system, plug size 1 or 2
type VGM12-36: with inner-cone-system, plug size 1 or 2
- system voltage Um up to 36 kV
- secondary 100/√3 V or 110/√3 V
- accuracy classes 0.2, 0.5, 1, 3, 3P and 6P
- winding for earth-fault detection on request (100/3 V or 110/3 V)
- voltage factor 1.9 x Un for 8 hours
- frequency 50 Hz or 60 Hz
Our instrument transformers can be delivered in a calibratable design for metering purposes. Type approvals for calibration are available for several countries.
We also produce current and voltage transformers in special designs and specification - we are looking forward to your inquiry!
