suitable for three-phase or single-phase oil-immersed power transformer,working under non-energized,ABB qualified subcontracto
Type of composingtap changer | (A)Rated current(A) | (kV)Rated Voltage(kV) | Range of voltage regulation | NO.ofphases | Regulatingposition | (mm)Install dimension (mm) | (mm)Holes on tank cover(mm) | ||||||||
H | H1 | H2 | L | L1 | L2 | L3 | L4 | Md | |||||||
WST63/10-3×2 Y-WST63/10-4×3 | 63 | 10 | ±5% | 3 | Y-Middle part | 180 | 75 | 70 | 514 | 157 | 200 | 106 | -- | M6 | φ43
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WST63/10-3×2Y-WST63/10-6×5 | 63 | ±2×2.5% | Y-Middle part | 180 | 550 | 175 | 200 | 106 | -- | M6 | |||||
WST63/10-8×7WST63/10-3×2Y- | 63 | ±3×2.5% | Middle partY- | 180 | 794 | 248 | 298 | 107 | -- | M6 | |||||
WST125/10-3×2Y-WST125/10-4×3 | 125 | ±5% | Y-Middle part | 185 | 750 | 235 | 280 | 110 | -- | M8 | |||||
WST125/10-3×2Y- WST125/10-6×5 | 125 | ±2×2.5% | Y-Middle part | 185 | 756 | 238 | 280 | 110 | -- | M8 | |||||
WST125/10-3×2Y- WST125/10-8×7 | 125 | ±3×2.5% | Y-Middle part | 185 | 894 | 287 | 320 | 115 | -- | M8 | |||||
WST250/10-3×2Y- WST250/10-4×3 | 250 | ±5% | Y-Middle part | 185 | 750 | 235 | 280 | 120 | -- | M10 | |||||
WST250/10-3×2Y- WST250/10-6×5 | 250 | ±2×2.5% | Y-Middle part | 185 | 780 | 250 | 280 | 120 | -- | M10 | |||||
WST250/10-3×2Y- WST250/10-8×7 | 250 | ±3×2.5% | Y-Middle part | 185 | 988 | 319 | 350 | 120 | -- | M10 | |||||
Off-circuit Tap Changer
