110, 150, 220 kV Single-phased oil-immersed voltage transformers НКФ type

The НКФ type voltage transformers are single-phase, electromagnetic, oil-immersed, triple-wound, outdoor installation, designed for scale transformation of electric AC voltage with a view to its further measure and connection to the inputs of measuring instruments, protection devices and alarms. Transformers are designed for use in AC 50Hz electrical circuits, with rated voltage up to 220 kV. Transformers are designed to work in mains with effectively grounded neutral and can up to 30 sec. withstand primary overvoltage of 150% of its nominal value.
For accurate determination of your needs, please fill out the questionnaire NKF-110.doc [64,5 Kb] (downloads: 4).



35 kV Single-phased oil-immersed voltage transformers ЗНОМ type

Grounding voltage transformers ЗНОМ-35-У1 (УХЛ1), single-phase, with natural oil cooling, are the scale inverters and are designed for transmission the data signal to measurement, protection, signaling, automation or mains-control measuring instruments, AC 50 Hz, with isolated neutral or with neutral, grounded through the Peterson coil.
For accurate determination of your needs, please fill out the questionnaire ZNOM-35.doc [38,5 Kb] (downloads: 3).
35 kV Single-phased oil-immersed voltage transformers ЗНОМ type



35 kV Three-phase oil-immersed voltage transformers НАМИ type

Three-phased oil-immersed anti-resonance voltage transformer НАМИ-35 type УХЛ1 is designed for installation in three-phase AC 50Hz electric mains, 35kV rated voltage, with ineffectively grounded neutral, to form signal for measurement and electrical protective devices.

For accurate determination of your needs, please fill out the questionnaire NAMI-35.doc [64,5 Kb] (downloads: 6).



6-10 kV Oil-immrsed voltage transformers, НТМИ-1, НАМИ-1 types

The transformers are designed for voltage measurement and may be connected to voltage meters and other devices that respond to the voltage, for example, the power meter voltage coils, electric meters, phase meters. Also they are usable for connection to automation, signaling and relay circuits. Applicable in AC 50Hz mains with voltage 6kV and 10kV with insulated neutral.
For accurate determination of your needs, please fill out the questionnaires NTMI.doc [38,5 Kb] (downloads: 6) NAMI.doc [40,5 Kb] (downloads: 2).



6-10 kV Dry cast voltage transformers ЗНОЛ-Э, ЗНОЛП-Э types

Voltage transformers of ЗНОЛ-Э, ЗНОЛП-Э types, single-phased, three-windings, are designed for electric energy needs.
The transformers are to be installed in the complete switchgears (КРУ), conductors (busbars) and are used for transmission of measurement data signal to electrical measuring instruments, protection, automation, signaling and control circuits of AC 50 Hz. Transformers ЗНОЛ-Э, ЗНОЛП-Э are able for long-term operation at high overvoltage (more 3Unom) that arose on any of three phases due to ferroresonance phenomena in a grid, as well as a weak error dependence on the load power.
For accurate determination of your needs, please fill out the questionnaire 3hZNOLPNALI-E.doc [120,5 Kb] (downloads: 3).



6-10 kV Dry cast voltage transformers НАЛИ-Э-6, НАЛИ-Э-10 types

Antiresonance group of НАЛИ-Э type voltage transformers, voltage class 6(10)kV, are designed for measurement data signal transmission to measuring instruments, protective and alarm devices in AC 50Hz with rated voltage 6 and 10 kV. The feature of НАЛИ-Э transformers is the possibility of continuous operation at high overvoltage (more than 3*Unom) that arose on any of three phases due to ferroresonance phenomena in a grid, as well as a weak error dependence on the load power.
For accurate determination of your needs, please fill out the questionnaire 3hZNOLPNALI-E.doc [120,5 Kb] (downloads: 3).



6-10 kV Dry cast voltage transformers 3*ЗНОЛ-Э-6,-12; 3*ЗНОЛП-Э-6,-12.

Three-phase antiresonance groups of measuring voltage  transformers 3*ЗНОЛ-Э and 3*ЗНОЛП-Э - (6-10kV) are electric components and are designed for installation in complete switchgears (КРУ), indoor and outdoor, as well as unilaterally services assembled chambers (КСО).
For accurate determination of your needs, please fill out the questionnaire 3hZNOLPNALI-E.doc [120,5 Kb] (downloads: 3).



Voltage transformers

Voltage transformer — one of kinds of transformers, designed not for electric power transformation and for feeding a various devices, but for electrical isolation the high-voltage circuit (6kV and above) off low-voltage one (generally 100V) intended for measure. It is used in measuring circuits, for converting the power lines and generators high voltage to a low voltage, convenient for measuring.
Furthermore, voltage transformers application allows to insulate a low-voltage protection, measuring or control circuits off high voltage, which in turn, allows usage a cheaper equipment in low-voltage circuits and reduces the cost of the insulation.
Since voltage transformers are not designed for passing the power through it, the basic operation mode of the voltage transformer is no-load mode.