In-Tank OLTCs
ABS Model OLTCs up to 132 KV Class
ABS 11
ABS 11 
Specifications
| Rated Voltage | 11 KV | |
| Rated Current | 100 / 200 / 300 A | |
| Direction of Power Flow | Uni-Directional | |
| Tapping Arrangement | Linear | |
| Maximum Number of Tap Positions | 17 | |
| Maximum Step Voltage | 300 V | |
| Switching Capacity | 60 / 90 KVA | |
| Insulation Level | Applied Voltage (KV) | Full Wave Lightning Impulse (KV) |
| A) Tap Changer to Earth | 34 | 110 |
| b) Between Phases | 34 | 110 |
| c) Between First and Last Contacts | 25 | 70 |
| d) Between Any Two Adjacent Contacts | 20 | 50 |
| e) Between Contacts of Change–Over Selector | NA | NA |
| Oil Quantity | 290 Liters | |
| Weight of OLTC without Oil | 370 Kg | |
| Weight of OLTC with Oil | 610 Kg |
(A)ABS 11
(A)ABS 11 
Specifications
| Rated Voltage | 11 KV | |
| Rated Current | 50 / 65 / 100 A | |
| Direction of Power Flow | Bidirectional | |
| Tapping Arrangement | Coarse Fine | |
| Maximum Number of Tap Positions | 17 | |
| Maximum Step Voltage | 250 / 300 V | |
| Swiching Capacity | 12.5 / 25 KVA | |
| Insulation Level | Applied Voltage (KV) | Fullwave Lightning Impulse (KV) |
| A) Tap Changer to Earth | 28 | 75 |
| b) Between Phases | 28 | 75 |
| c) Between First and Last Contacts | 8 | 25 |
| d) Between Any Two Adjacent Contacts | 8 | 25 |
| Oil Quantity | NA | |
| Weight of OLTC with Oil | 380 Kg |
ABS 33
ABS 33 
Specifications
| Rated Voltage | 33 KV | |||
| Rated Current | 200/300/500A | |||
| Maximum Step Voltage | 850 V | |||
| Swiching Capacity | 90/135 KVA | |||
| Insulation Level | Applied Voltage (KV) | Fullwave Lightnining Impulse (KV) | ||
| A) Tap Changer to Earth | 70 | 170 | ||
| b) Between Phases | 70 | 170 | ||
| c) Between First and Last Contacts | 25 | 70 | ||
| d) Between Any Two Adjacent Contacts | 25 | 70 | ||
| Type | ABS III 200/300 30 9.9.0 | ABS III 200/300/500 30 17.17.0 | ABS III 200/300/500 30 9.17.0G | ABS III 200/300/500 30 12.23.0G |
| Tapping Arrangement | Linear | Linear | Coarse Fine | Coarse Fine |
| Direction of Power Flow | Bi-Directional | Uni-Directional | Bi-Directional | Bi-Directional |
| Maximum Number of Position | 9 | 17 | 17 | 23 |
| Oil Quantity (Liters) | 335 | 658 | 390 | 670 |
| Weight of Tap Changer with Oil (Kg) | 675 | 1060 | 740 | 1045 |
ABS 66
ABS 66 
Specifications
| Rated Voltage | 66 | |
| Rated Current | 300 A | |
| Direction of Power Flow | Uni-Directional / Bidirectional | |
| Tapping Arrangement | Linear | |
| Maximum Number of Tap Positions | 17 / 23 | |
| Maximum Step Voltage | 1000 V | |
| Switching Capacity | 150 kVA | |
| Insulation Level | Applied Voltage (KV) | Fullwave Lightnining Impulse (KV) |
| A) Tap Changer to Earth | 140 | 350 |
| B) Between Phases | 140 | 350 |
| C) Between First and Last Contacts | 80 | 200 |
| D) Between Any Two Adjacent Contacts | 20 | 70 |
| Oil Quantity | 290 Liters | |
| Weight of OLTC without Oil | 370 Kg | |
| Weight of OLTC with Oil | 610 Kg |
ABS 132
ABS 132 
Specifications
| Rated Voltage | 132 | |
| Rated Current | 300 A | |
| Direction of Power Flow | Bidirectional | |
| Tapping Arrangement | Coarse / Fine | |
| Maximum Number of Tap Positions | 17 | |
| Maximum Step Voltage | 1200 V | |
| Switching Capacity | 150 kVA | |
| Insulation Level | Applied Voltage (KV) | Fullwave Lightnining Impulse (KV) |
| A) Tap Changer to Earth | 140 | 350 |
| B) Between Phases | 70 | 170 |
| C) Between First and Last Contacts | 45 | 200 |
| D) Between Any Two Adjacent Contacts | 45 | 200 |
| Oil Quantity | 1364 Liters | |
| Weight of OLTC with Oil | 1810 Kg |
T Series
T15-11kV 9P AIRVAC
T15-11kV 9P AIRVAC 
Specifications
| Applicable Up To | 2 / 4 MVA | ||
| Rated Voltage | 11 KV | ||
| Rated Through Current | 100 A / 200 A | ||
| Insulating Medium | AIR | ||
| Direction of Power Flow | Uni-Directional (Suitable for Bi-Directional Also) | ||
| Tapping Arrangement | Selector Diverter | ||
| Arcing Contact | Vacuum Interrupter | ||
| Maximum Number of Tap Positions | 9 | ||
| Rated Step Voltage | 300 V | ||
| Switching Capacity | 60 KVA | ||
| Rated Insulation Level | HV of Equipment (kV) | Rated Separate Source Withstand Voltage (RMS) | Rated Lightning Impulse Withstand Voltage (kV Peak) |
| a) Tap Changer to Ground | 12 kV | 28 kV | 75 kV |
| b) Between Phase | 12 kV | 28 kV | 75 kV |
| c) Over Tapping Range | 12 kV | 15 kV | 40 kVp |
| d) Between Contacts | 12 kV | 5 kV | 15 kVp |
| e) Between Contacts of Preselector | 12 kV | NA | NA |
| Oil Quantity | NA | ||
| Weight of Tap Changer with Oil | 270 Kg | ||
T15 -33kV 9P
T15 -33kV 9P 
Specifications
| Applicable Up To | 6 / 12 MVA | ||
| Rated Voltage | 33 kV | ||
| Rated Through-Current | 100 A / 200 A | ||
| Insulating Medium | Air | ||
| Direction of Power Flow | Uni-Directional (Suitable for Bi-Directional also) | ||
| Tapping Arrangement | Selector Diverter | ||
| Arcing Contact | Vacuum Interrupter | ||
| Maximum Number of Tap Positions | 9 | ||
| Rated Step Voltage | 900 V | ||
| Switching Capacity | 180 kVA | ||
| Rated Insulation Level | Highest Voltage for Equipment (kV) | Rated Separate Source AC Withstand Voltage (kV r.m.s) | Rated Lightning Impulse Withstand Voltage (kV Peak) |
| (a) Tap Changer to Ground | 36 kV | 70 kV | 170 kV |
| (b) Between Phases | 36 kV | 70 kV | 170 kV |
| (c) Over Tapping Range | 36 kV | 15 kV | 40 kVp |
| (d) Between Contacts | 36 kV | 5 kV | 15 kVp |
| (e) Between Contacts of Pre-Selector | 36 kV | NA | NA |
| Oil Quantity | NA | ||
| Weight of Tap Changer with Oil | 560 Kg | ||
T11-66kV 17P
T11-66kV 17P 
Specifications
| Rated Voltage | 66 KV | |
| Rated Current | 300 A | |
| Direction of Power Flow | Bi-Directional | |
| Tapping Arrangement | Linear | |
| Maximum Number of Tap Positions | 17 | |
| Maximum Step Voltage | 1000 V | |
| Switching Capacity | 270 KVA | |
| Insulation Level | Applied Voltage (kV) | Full Wave Lightning Impulse (kV) |
| (a) Tap Changer to Earth | 140 | 350 |
| (b) Between Phases | 140 | 350 |
| (c) Between First and Last Contacts | 40 | 100 |
| (d) Between Any Two Adjacent Contacts | 25 | 50 |
| (e) Between Contacts of Change-Over Selector | NA | NA |
| Oil Quantity | 580 Liters | |
| Weight of OLTC with Oil | 1000 Kg | |
T10-P/S-11kV-17P
T10-P/S-11kV-17P 
Specifications
| Rated Voltage | 11 KV | |
| Rated Current | 100 A | |
| Direction of Power Flow | Uni-Directional | |
| Tapping Arrangement | Coarse Fine | |
| Maximum Number of Tap Positions | 17 | |
| Maximum Step Voltage | 300 V | |
| Switching Capacity | 30 KVA | |
| Insulation Level | Applied Voltage (KV) | Fullwave Lightning Impulse (KV) |
| a) Tap Changer to Earth | 28 | 75 |
| b) Between Phases | 28 | 75 |
| c) Between First and Last Contacts | 10 | 40 |
| d) Between Any Two Adjacent Contacts | 10 | 40 |
| e) Between Contacts of Change–Over Selector | 10 | 40 |
| Oil Quantity | 45 Liters | |
| Weight of OLTC with Oil | 176 Kg | |
T10-11kV 9P
T10-11kV 9P 
Specifications
| Rated Voltage | 11 KV | |
| Rated Through-Current | 100 A | |
| Direction of Power Flow | Uni-Directional | |
| Tapping Arrangement | Linear | |
| Maximum Number of Tap Positions | 9 | |
| Max. Rated Step Voltage | 300 V | |
| Switching Capacity | 30 KVA | |
| Rated Insulation Level | Applied Voltage (KV) | Full Wave Lightning Impulse Test (KV) |
| (a) Tap-Changer to Earth | 28 | 75 |
| (b) Between Phases | 28 | 75 |
| (c) Between First and Last Contact | 10 | 40 |
| (d) Between Any Two Adjacent Contacts | 10 | 40 |
| (e) Between Contacts of Change–Over Selector | NA | NA |
| Oil Quantity | 45 Liters | |
| Weight of Tap Changer with Oil | 110 Kgs | |
T14 33kV 17P C/F
T14 33kV 17P C/F 
Specifications
| Rated Voltage | 33 KV | |
| Rated Current | 200 A | |
| Direction of Power Flow | Bi-Directional | |
| Tapping Arrangement | Coarse Fine | |
| Maximum Number of Tap Positions | 17 | |
| Maximum Step Voltage | 900 V | |
| Switching Capacity | 90 KVA | |
| Insulation Level | Applied Voltage (KV) | Full Wave Lightning Impulse (KV) |
| (a) Tap Changer to Earth | 70 | 170 |
| (b) Between Phases | 70 | 170 |
| (c) Between First and Last Contacts | 25 | 70 |
| (d) Between Any Two Adjacent Contacts | 25 | 70 |
| (e) Between Contacts of Change–Over Selector | 25 | 70 |
| Oil Quantity | 120 Liters | |
| Weight of OLTC with Oil | 320 Kg | |
T14 33kV 9P
T14 33kV 9P 
Specifications
| Rated Voltage | 33 KV | |
| Rated Current | 200 A | |
| Direction of Power Flow | Bi-Directional | |
| Tapping Arrangement | Linear | |
| Maximum Number of Tap Positions | 9 | |
| Maximum Step Voltage | 900 V | |
| Switching Capacity | 90 KVA | |
| Insulation Level | Applied Voltage (KV) | Full Wave Lightning Impulse (KV) |
| (a) Tap Changer to Earth | 70 | 170 |
| (b) Between Phases | 70 | 170 |
| (c) Between First and Last Contacts | 25 | 70 |
| (d) Between Any Two Adjacent Contacts | 25 | 70 |
| (e) Between Contacts of Change–Over Selector | NA | NA |
| Oil Quantity | 120 Liters | |
| Weight of OLTC with Oil | 290 Kg | |
T13-11kV 17P
T13-11kV 17P 
Specifications
| Rated Voltage | 11 KV | |
| Rated Through-Current | 200 A | |
| Direction of Power Flow | Uni-Directional | |
| Tapping Arrangement | Linear | |
| Maximum Number of Tap Positions | 17 | |
| Max. Rated Step Voltage | 300 V | |
| Switching Capacity | 60 KVA | |
| Rated Insulation Level | Applied Voltage (KV) | Full Wave Lightning Impulse Test (KV) |
| (a) Tap-Changer to Earth | 28 | 75 |
| (b) Between Phases | 28 | 75 |
| (c) Between First and Last Contact | 10 | 40 |
| (d) Between Any Two Adjacent Contacts | 10 | 40 |
| (e) Between Contacts of Change-Over Selector | NA | NA |
| Oil Quantity | 90 Liters | |
| Weight of Tap Changer with Oil | 255 Kgs | |
T12 33KV 17P
T12 33KV 17P 
Specifications
| Rated Voltage | 33 KV | |
| Rated Current | 200 A | |
| Direction of Power Flow | Uni-Directional | |
| Tapping Arrangement | Linear | |
| Maximum Number of Tap Positions | 17 | |
| Maximum Step Voltage | 900 V | |
| Switching Capacity | 90 KVA | |
| Insulation Level | Applied Voltage (KV) | Full Wave Lightning Impulse (KV) |
| (a) Tap Changer to Earth | 70 | 170 |
| (b) Between Phases | 70 | 170 |
| (c) Between First and Last Contacts | 25 | 70 |
| (d) Between Any Two Adjacent Contacts | 25 | 70 |
| (e) Between Contacts of Change–Over Selector | NA | NA |
| Oil Quantity | 170 Liters | |
| Weight of OLTC with Oil | 365 Kg | |
Mini Type OLTCs up to 66 KV Class
33kV 17P C/F
33kV 17P C/F 
Specifications
| Applicable Up To | 12 MVA | ||
| Rated Voltage | 33 KV | ||
| Rated Through Current | 200 A | ||
| Direction of Power Flow | Bi-Directional | ||
| Tapping Arrangement | C/F, Reverser | ||
| Maximum Number of Tap Positions | 17 | ||
| Rated Step Voltage | 900 V | ||
| Switching Capacity | 90 KVA | ||
| Rated Insulation Level | HV of Equipment (kV) | Rated Separate Source Withstand Voltage (RMS) | Rated Lightning Impulse Withstand Voltage (kV Peak) |
| a) Tap Changer to Ground | 36 kV | 70 kV | 170 kVp |
| b) Between Phase | 36 kV | 70 kV | 170 kVp |
| c) Over Tapping Range | 36 kV | 25 kV | 70 kVp |
| d) Between Contacts | 36 kV | 25 kV | 70 kVp |
| e) Between Contacts of Preselector | 36 kV | 25 kV | 70 kVp |
| Oil Quantity | 120 Liters | ||
| Weight of Tap Changer with Oil | 319 Kg | ||
T13-11kV 17P
T13-11kV 17P Specifications
| Rated Voltage | 11 KV | |
| Rated Through-Current | 200 A | |
| Direction of Power Flow | Uni-Directional | |
| Tapping Arrangement | Linear | |
| Maximum Number of Tap Positions | 17 | |
| Max. Rated Step Voltage | 300 V | |
| Switching Capacity | 60 KVA | |
| Rated Insulation Level | Applied Voltage (KV) | Full Wave Lightning Impulse Test (KV) |
| (a) Tap-Changer to Earth | 28 | 75 |
| (b) Between Phases | 28 | 75 |
| (c) Between First and Last Contact | 10 | 40 |
| (d) Between Any Two Adjacent Contacts | 10 | 40 |
| (e) Between Contacts of Change-Over Selector | NA | NA |
| Oil Quantity | 90 Liters | |
| Weight of Tap Changer with Oil | 255 Kgs | |
33KV 17P
33KV 17P 
Specifications
| Applicable Up To | 12 MVA | ||
| Rated Voltage | 33 KV | ||
| Rated Through Current | 200 A | ||
| Direction of Power Flow | Uni-Directional | ||
| Tapping Arrangement | Linear | ||
| Maximum Number of Tap Positions | 17 | ||
| Rated Step Voltage | 900 V | ||
| Switching Capacity | 90 KVA | ||
| Rated Insulation Level | HV of Equipment (kV) | Rated Separate Source Withstand Voltage (RMS) | Rated Lightning Impulse Withstand Voltage (kV Peak) |
| (a) Tap Changer to Ground | 36 kV | 70 kV | 170 kVp |
| (b) Between Phase | 36 kV | 70 kV | 170 kVp |
| (c) Over Tapping Range | 36 kV | 25 kV | 70 kVp |
| (d) Between Contacts | 36 kV | 10 kV | 40 kVp |
| (e) Between Contacts of Pre-Selector | 36 kV | NA | NA |
| Oil Quantity | 141 Liters | ||
| Weight of Tap Changer with Oil | 363 Kg | ||
T15 -33kV 9P
T15 -33kV 9P Specifications
| Applicable Up To | 6 / 12 MVA | ||
| Rated Voltage | 33 kV | ||
| Rated Through-Current | 100 A / 200 A | ||
| Insulating Medium | Air | ||
| Direction of Power Flow | Uni-Directional (Suitable for Bi-Directional also) | ||
| Tapping Arrangement | Selector Diverter | ||
| Arcing Contact | Vacuum Interrupter | ||
| Maximum Number of Tap Positions | 9 | ||
| Rated Step Voltage | 900 V | ||
| Switching Capacity | 180 kVA | ||
| Rated Insulation Level | Highest Voltage for Equipment (kV) | Rated Separate Source AC Withstand Voltage (kV r.m.s) | Rated Lightning Impulse Withstand Voltage (kV Peak) |
| (a) Tap Changer to Ground | 36 kV | 70 kV | 170 kV |
| (b) Between Phases | 36 kV | 70 kV | 170 kV |
| (c) Over Tapping Range | 36 kV | 15 kV | 40 kVp |
| (d) Between Contacts | 36 kV | 5 kV | 15 kVp |
| (e) Between Contacts of Pre-Selector | 36 kV | NA | NA |
| Oil Quantity | NA | ||
| Weight of Tap Changer with Oil | 560 Kg | ||
T11-66kV 17P
T11-66kV 17P Specifications
| Rated Voltage | 66 KV | |
| Rated Current | 300 A | |
| Direction of Power Flow | Bi-Directional | |
| Tapping Arrangement | Linear | |
| Maximum Number of Tap Positions | 17 | |
| Maximum Step Voltage | 1000 V | |
| Switching Capacity | 270 KVA | |
| Insulation Level | Applied Voltage (kV) | Full Wave Lightning Impulse (kV) |
| (a) Tap Changer to Earth | 140 | 350 |
| (b) Between Phases | 140 | 350 |
| (c) Between First and Last Contacts | 40 | 100 |
| (d) Between Any Two Adjacent Contacts | 25 | 50 |
| (e) Between Contacts of Change-Over Selector | NA | NA |
| Oil Quantity | 580 Liters | |
| Weight of OLTC with Oil | 1000 Kg | |
T10-P/S-11kV-17P
T10-P/S-11kV-17P Specifications
| Rated Voltage | 11 KV | |
| Rated Current | 100 A | |
| Direction of Power Flow | Uni-Directional | |
| Tapping Arrangement | Coarse Fine | |
| Maximum Number of Tap Positions | 17 | |
| Maximum Step Voltage | 300 V | |
| Switching Capacity | 30 KVA | |
| Insulation Level | Applied Voltage (KV) | Fullwave Lightning Impulse (KV) |
| a) Tap Changer to Earth | 28 | 75 |
| b) Between Phases | 28 | 75 |
| c) Between First and Last Contacts | 10 | 40 |
| d) Between Any Two Adjacent Contacts | 10 | 40 |
| e) Between Contacts of Change–Over Selector | 10 | 40 |
| Oil Quantity | 45 Liters | |
| Weight of OLTC with Oil | 176 Kg | |
T10-11kV 9P
T10-11kV 9P Specifications
| Rated Voltage | 11 KV | |
| Rated Through-Current | 100 A | |
| Direction of Power Flow | Uni-Directional | |
| Tapping Arrangement | Linear | |
| Maximum Number of Tap Positions | 9 | |
| Max. Rated Step Voltage | 300 V | |
| Switching Capacity | 30 KVA | |
| Rated Insulation Level | Applied Voltage (KV) | Full Wave Lightning Impulse Test (KV) |
| (a) Tap-Changer to Earth | 28 | 75 |
| (b) Between Phases | 28 | 75 |
| (c) Between First and Last Contact | 10 | 40 |
| (d) Between Any Two Adjacent Contacts | 10 | 40 |
| (e) Between Contacts of Change–Over Selector | NA | NA |
| Oil Quantity | 45 Liters | |
| Weight of Tap Changer with Oil | 110 Kgs | |
33kV 9P
33kV 9P 
Specifications
| Applicable Up To | 12 MVA | ||
| Rated Voltage | 33 KV | ||
| Rated Through Current | 200 A | ||
| Direction of Power Flow | Bi-Directional | ||
| Tapping Arrangement | Linear | ||
| Maximum Number of Tap Positions | 9 | ||
| Rated Step Voltage | 900 V | ||
| Switching Capacity | 90 KVA | ||
| Rated Insulation Level | Highest Voltage of Equipment (kV) | Rated Separate Source AC Withstand Voltage (kV r.m.s) | Rated Lightning Impulse Withstand Voltage (kV Peak) |
| (a) Tap Changer to Ground | 36 kV | 70 kV | 170 kVp |
| (b) Between Phases | 36 kV | 70 kV | 170 kVp |
| (c) Over Tapping Range | 36 kV | 25 kV | 70 kVp |
| (d) Between Contacts | 36 kV | 25 kV | 70 kVp |
| (e) Between Contacts of Pre-Selector | 36 kV | NA | NA |
| Oil Quantity | 120 Liters | ||
| Weight of Tap Changer with Oil | 289 Kg | ||
T11-66 KV -17 Position
T11-66 KV -17 Position Technical Specifications
| Rated Voltage | 66 KV | |
| Rated Current | 300 A | |
| Direction of Power Flow | Bi-Directional | |
| Tapping Arrangement | Linear | |
| Maximum Number of Tap Positions | 17 | |
| Maximum Step Voltage | 1000V | |
| Switching Capacity | 270 KVA | |
| Insulation Level | Applied Voltage (KV) | Fullwave Lightning Impulse (KV) |
| A) Tap Changer to Earth | 140 | 350 |
| b) Between phases | 140 | 350 |
| c) Between First and Last Contacts | 40 | 100 |
| d) Between any two adjacent Contacts | 25 | 50 |
| e) Between contacts of Change – Over Selector | NA | NA |
| Oil Quantity | 580 Liters | |
| Weight of OLTC with Oil | 1000 Kg |
T12 -33 KV 17 Position Linear
T12 -33 KV 17 Position Linear Specifications
| Rated Voltage | 33 KV | |
| Rated Current | 200 A | |
| Direction of Power Flow | Uni-Directional | |
| Tapping Arrangement | Linear | |
| Maximum Number of Tap Positions | 17 | |
| Maximum Step Voltage | 900V | |
| Swiching Capacity | 90 KVA | |
| Insulation Level | Applied Voltage (KV) | Fullwave Lightnining Impulse (KV) |
| A) Tap Changer to Earth | 70 | 170 |
| b) Between phases | 70 | 170 |
| c) Between First and Last Contacts | 25 | 70 |
| d) Between any two adjacent Contacts | 25 | 70 |
| e) Between contacts of Change – Over Selector | NA | NA |
| Oil Quantity | 170 Liters | |
| Weight of OLTC with Oil | 365 Kg |
T14-33 KV, Linear-9 Position
T14-33 KV, Linear-9 Position Specifications
| Rated Voltage | 33 KV | |
| Rated Current | 200 A | |
| Direction of Power Flow | Bi-Directional | |
| Tapping Arrangement | Linear | |
| Maximum Number of Tap Positions | 9 | |
| Maximum Step Voltage | 900V | |
| Switching Capacity | 90 KVA | |
| Insulation Level | Applied Voltage (KV) | Fullwave Lightning Impulse (KV) |
| A) Tap Changer to Earth | 70 | 170 |
| b) Between phases | 70 | 170 |
| c) Between First and Last Contacts | 25 | 70 |
| d) Between any two adjacent Contacts | 25 | 70 |
| e) Between contacts of Change – Over Selector | NA | NA |
| Oil Quantity | 120 Liters | |
| Weight of OLTC with Oil | 290 Kg |
T14 – 33 KV, C/F-17 Position
T14 – 33 KV, C/F-17 Position Specifications
| Rated Voltage | 33 KV | |
| Rated Current | 200 A | |
| Direction of Power Flow | Bi-Directional | |
| Tapping Arrangement | Coarse Fine | |
| Maximum Number of Tap Positions | 17 | |
| Maximum Step Voltage | 900V | |
| Swiching Capacity | 90 KVA | |
| Insulation Level | Applied Voltage (KV) | Fullwave Lightnining Impulse (KV) |
| A) Tap Changer to Earth | 70 | 170 |
| b) Between phases | 70 | 170 |
| c) Between First and Last Contacts | 25 | 70 |
| d) Between any two adjacent Contacts | 25 | 70 |
| e) Between contacts of Change – Over Selector | 25 | 70 |
| Oil Quantity | 120 Liters | |
| Weight of OLTC with Oil | 320 Kg |
T13 - 17 Position
T13 - 17 Position Specifications
| Rated Voltage | 11 KV | |
| Rated Current | 100/200 A | |
| Direction of Power Flow | Uni-Directional | |
| Tapping Arrangement | Linear | |
| Maximum Number of Tap Positions | 17 | |
| Maximum Step Voltage | 300V | |
| Switching Capacity | 60 KVA | |
| Insulation Level | Applied Voltage (KV) | Fullwave Lightning Impulse (KV) |
| A) Tap Changer to Earth | 28 | 75 |
| b) Between phases | 28 | 75 |
| c) Between First and Last Contacts | 10 | 40 |
| d) Between any two adjacent Contacts | 10 | 40 |
| e) Between contacts of Change – Over Selector | NA | NA |
| Oil Quantity | 90 Liters | |
| Weight of OLTC with Oil | 255 Kg |
T10- P/S – 17 Positions
T10- P/S – 17 Positions Specifications
| Rated Voltage | 11 KV | |
| Rated Current | 100A | |
| Direction of Power Flow | Uni-Directional | |
| Tapping Arrangement | Coarse Fine | |
| Maximum Number of Tap Positions | 17 | |
| Maximum Step Voltage | 300V | |
| Swiching Capacity | 30 KVA | |
| Insulation Level | Applied Voltage (KV) | Fullwave Lightnining Impulse (KV) |
| A) Tap Changer to Earth | 28 | 75 |
| b) Between phases | 28 | 75 |
| c) Between First and Last Contacts | 10 | 40 |
| d) Between any two adjacent Contacts | 10 | 40 |
| e) Between contacts of Change – Over Selector | 10 | 40 |
| Oil Quantity | 45 Liters | |
| Weight of OLTC with Oil | 176 Kg |
T10 - 9 Position
T10 - 9 Position Specifications
| Rated Voltage | 11 KV | |
| Rated Current | 100A | |
| Direction of Power Flow | Uni-Directional | |
| Tapping Arrangement | Linear | |
| Maximum Number of Tap Positions | 9 | |
| Maximum Step Voltage | 300V | |
| Switching Capacity | 30 KVA | |
| Insulation Level | Applied Voltage (KV) | Fullwave Lightnining Impulse (KV) |
| A) Tap Changer to Earth | 28 | 75 |
| b) Between phases | 28 | 75 |
| c) Between First and Last Contacts | 10 | 40 |
| d) Between any two adjacent Contacts | 10 | 40 |
| e) Between contacts of Change – Over Selector | NA | NA |
| Oil Quantity | 45 Liters | |
| Weight of OLTC without Oil | 110 Kg |
T15-11kV 9P AIRVAC
T15-11kV 9P AIRVAC Specifications
| Applicable Up To | 2 / 4 MVA | ||
| Rated Voltage | 11 KV | ||
| Rated Through Current | 100 A / 200 A | ||
| Insulating Medium | AIR | ||
| Direction of Power Flow | Uni-Directional (Suitable for Bi-Directional Also) | ||
| Tapping Arrangement | Selector Diverter | ||
| Arcing Contact | Vacuum Interrupter | ||
| Maximum Number of Tap Positions | 9 | ||
| Rated Step Voltage | 300 V | ||
| Switching Capacity | 60 KVA | ||
| Rated Insulation Level | HV of Equipment (kV) | Rated Separate Source Withstand Voltage (RMS) | Rated Lightning Impulse Withstand Voltage (kV Peak) |
| a) Tap Changer to Ground | 12 kV | 28 kV | 75 kV |
| b) Between Phase | 12 kV | 28 kV | 75 kV |
| c) Over Tapping Range | 12 kV | 15 kV | 40 kVp |
| d) Between Contacts | 12 kV | 5 kV | 15 kVp |
| e) Between Contacts of Preselector | 12 kV | NA | NA |
| Oil Quantity | NA | ||
| Weight of Tap Changer with Oil | 270 Kg | ||
T7
T7
T7 
Specifications
| 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
T19
T19 
Specifications
| 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 | ||||||