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HT AVR
POOJA make HT AVR is suitable for indoor / outdoor installations. The standard
off-circuit tap changer transformers can correct limited voltage variation
and cannot regulate the voltage while in ‘On load’ conditions. HT Automatic
Voltage Regulator operates on load and gives stabilised voltage on the HT
side. The fluctuating voltage from the grid is initially controlled by the HT AVR
and then fed to the transformer, which provides constant H.T. output within
+/- 1% accuracy. HT AVR’s robust design has such low internal losses that the
distribution transformer can utilise up to 100% capacity.
A Typical HT AVR consists of four integral units:
- Step-down Unit-Double winding
- Buck/Boost Unit-Double Winding
- Control Unit and Reversing "Q" Panel (wherever applicable)
- Regulator Unit-auto-wound, delta connected with rolling contacts capable of moving along the winding through automatic/motorised/manual mechanisms for regulation of output voltage.
Technical Specifications
Range | 25 kVA to 5 MVA |
Applicable Standards | IS: 2026- Indian standard IEC: 60076 – International standard |
Vector Group | Dyn11 |
Winding Material | 99.9% pure electrolytic grade copper |
Primary Voltage | As per customer specifications and requirement |
Secondary Voltage | 11, 22, 33 kV or as per customer specifications and requirement |
Duty, type | Continuous duty Outdoor/lndoor |
No. Of Phases | 3 Phase |
Class of insulation | Class A |
Insulating Oil | Mineral oil as per IS:335 / IEC:296 OR Ester Oil (as per customer specification) |