VTD type double-pole voltage transformers manufactured by KBP Intra Sro (Czech Republic) meet the highest quality requirements.

These voltage transformers has been designed for indoor use on medium voltage networks. The cast-resin insulation of voltage transformer is an epoxy mix which is an electric insulant featuring extremely good mechanical properties. The voltage transformers is available with one, two or three secondary windings. The secondary windings are led out to a terminal board. The secondary terminal board has a lockable plastic cover. Secondary cable entry to the secondary terminals is possible through 1 pc of Pg16 packing gland.

The device is constructed in such a way that its structure cannot be dismantled and its nameplate cannot be replaced without damaging the calibration mark. The voltage transformers withstands thermal and dynamic impacts caused by an external short-circuit for a period set out in relevant standard. All components, materials and parts used during the manufacturing process comply with all relevant standards being currently effective and with the generally recognized technical rules. The product does not contain any material containing PCB or asbestos, halogenated hydrocarbons and any other hazardous material to be mandatorily furnished with a descriptive symbol.

The voltage transformer is type tested according to EN 61869-1 and EN 61869-3 standards.

Voltage transformers used for metering for accounting are calibrated by MKEH (Hungarian Trade Licensing Office), Authority of Metrology.

Downloadable catalog:

Medium voltage instrument transformers catalogue

Main technical specifications

Maximum voltage: 12/17.5 kV, 24/25kV
Power frequency withstand test voltage: 28/38 kV, 50kV
Impulse withstand test voltage: 75/95 kV, 125kV
Nominal primary voltage: 3000 – 22 000 V
Nominal secondary voltage: 100, 110, 120 V
Accuracy class – measuring core: 0.2, 0.5, 1
Accuracy class – protection core: 3P, 6P
Overcurrent factor – protection core: 5, 10, 15, 20, 25, 30
Power: 5,7, 5, 10, 15, 20, 30, 50, 75, 100, 150 VА
Maximum power: 500 VA
Frequency: 50 Hz
Insulation temperature class: E
Operating temperature: -5 to + 40 °C
Storage temperature: -50°C to +60°C
Standards: EN 60044-2, EN 61869-1, EN 61869-3, GOST 15 150