Products Description
Name:Voltage Regulating Tap Changer
Type:Off Circuit Drum Type Tap Changer
The Off Circuit Drum Type Tap Changer (also known as De-energized Tap Changer or No Load Tap Changer) is designed for voltage regulation in oil-immersed distribution transformers.
This Voltage Regulating Tap Changer allows manual adjustment of transformer voltage ratio when the transformer is completely de-energized.
The drum (cylinder) structure ensures stable contact switching, compact installation, and long service life.
Drawing
Main performance parameter (kV)Voltage grade |
Insulation level(kV) |
(Pa/24h) Sealing performance (Pa/24h) |
Machine life (Ten thousand times) |
Rated through current (A) |
Short-circuit capacity |
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Power frequency withstand voltage(1 min) |
(1.2/50μs) Impulse(1.2/50μs) |
(kA/2s) Heat stableness current (kAl2s) |
(kA) Dynamic stableness current (kA) |
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Highest voltage for equipment |
Rated Voltage(kV) |
Wiring mode |
To ground |
Inter phase |
Inter contactor |
To ground |
Inter phase |
Inter contactor |
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| 12 | 10 | Y | 45 | 45 | 18 | 110 | 110 | 60 | 6×10⁴ | 2000 | 250 | 5 | 12.5 |
| 400 | 6 | 15 | |||||||||||
| △ | 45 | 45 | 18 | 110 | 110 | 60 | 500 | 7.5 | 18.75 | ||||
| 40.5 | 35 | Y | 95 | 45 | 30 | 250 | 105 | 60 | 630 | 9.45 | 23.6 | ||
| △ | 95 | 95 | 30 | 250 | 250 | 90 | 800 | 9.73 | 24.3 | ||||
| 72.5 | 66 | Y | 140 | 95 | 45 | 350 | 250 | 105 | 1000 | 10 | 25 | ||
| △ | 140 | 140 | 45 | 350 | 350 | 105 | 1250 | 12.5 | 31.25 | ||||
| 126 | 110 | Y | 230 | 140 | 45 | 550 | 350 | 150 | 1600 | 16 | 40 | ||
| △ | 230 | 230 | 55 | 550 | 550 | 175 | 2000 | 20 | 50 | ||||
| 252 | 220 | 460 | ★ 230/395 |
90 | 1050 | ★ 550/950 |
285 | 2500 | 25 | 62.5 | |||
| 3000 | 30 | 75 | |||||||||||
our certificate
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