Products & Services
On-Load Tap-Changer
T7
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Specification
Tap Changer Model PG III 200 PG III 300 PG III 500 PG I 200 PG I 300 PG I 500 PG I 800 PG I 1200
Number of poles and application 3(Neutral) 3(Neutral) 3(Neutral) 1 1 1 1 1
Maximum rated through-current (In A) 200 300 500 200 300 500 800 1200
Short-circuit strength (in KA)
theramic 3.5/2sec 3.5/2sec 8/3sec 3.5/2sec 3.5/2sec 8/3sec 8/3sec 25/3sec
dynamic(peak value) 8.75 8.75 20 8.75 8.75 20 20 62.5
Step voltage per phase(In V) 2500 2500 2500 2500 2500 2500 2500 2500
Insulation to Ground   Voltage class (kv)
66 132 170 220
Highest voltage for equipment Um (In kv,50 Hz)   72.5 132 170 245
Rated Impulse withstand voltage (In kv,1.2/50) 350 550 750 900
Rated power frequency withstand voltage(In kv,50 Hz,1 min.) 140 230 325 390
Rated switching capacity (In KVA) 825 825 825 825 825 825 825 825
Operating Positions Without change-over selector: max.18
With change-over selector: max.35
Internal Insulation
Tap Selector C type Selector
Diverter Switch Oil Compartment Pressure-proof up to 0.3 bar(test pressure 0.8 bar),vacuum-proof for drying standard equipment.
Oil Suction Pipe Standard Equipment.
Tap-changer Model   PG III 200 /PG III 300/PG III 500 PG I 200/PG I 300/PG I 500 PG I 800 PG I 1200
Weight in Kg without change-over selector 400 410 420 445
With changeover selector 424 434 445 469
Displacement - Volume in dm 3 66 kv 279 261 273 279
132 kv 311 292 305 311
170 kv 336 316 330 336
220 kv 362 343 356 362
Volume Δv of Oil conservation in dm3   Vs Δv=0.1Vs+4
66 kv 188 22.8
132 kv 205 24.5
170 kv 240 28
220 kv 264 30.4
T19-33KV/66KV/110 KV 23P RMV MINI
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Specification
Rate voltage 33KV 66KV 110KV
Rated through current 37KV 72KV 123KV
Rated Insulation Level
i) Rated separate source AC withstand voltage
a) Tap-changer to ground 70 140 230
b) Between phases 70 140 230
c) Over tapping range 50 50 50
b) Between adjacent contacts 50 50 50
e) Between contacts of changes-over selector 50 50 50
ii) Rated lightning impulse withstand voltage KV(peak)
a) Tap-changer to ground 170 350 550
b) Between phases 70 350 350
c) Over tapping range 150 150 150
b) Between adjacent contacts 150 150 150
e) Between contacts of changes-over selector 200 200 200
Maximum rated through- current 200 A
Direction of power flow BI-directional
Tapping arrangement Coarse-fine, Reversing
Maximum number of tap positions 23
Switching capacity 280 KVA
Rated step voltage 1650 V
Oil displacement (In liters) 160 180 220
Oil quantity (In liters) 150 165 200
Weight of tap changer without oil 250 kg 280 kg 330 kg