On Load Tap changer (OLTC)
An On-Load Tap changing Transformer (OLTC) consists of an open Load tap changer, which is
also known as an on-circuit tap changer (OCTC). An OLTC is used in areas where there is an
interruption in the power supply due to an unacceptable tap change. The ratio of the number
of turns can be changed without breaking the circuit. Our OLTC consists of 33 taps, where one
tap is the centre rated tab, 16 taps increase the ratio of the windings, and the remaining 16 taps
decrease the ratio of the winding.
Service Overview
- Compatible Design
- Minimum Power Losses
- Low Response Time
- Low Maintenance
- Long Service Life
- Reduced Installation Cost
- Reduction in Electricity Bill
11 kV On Load Tapchanger Technical Specification
IEC-60214-1 and IS-8468
Type
11KVCCX16
Rated Voltage
11KV
Rated Current
200Amp
Rated Normal Current
200Amp
Rated Frequency
50Hz
No. of Phases
3
Maximum Rated through current
200Amp
Method of Drive
Motorized
Rated Insulation Level
34kV RMS 1 Min/110 kVp
1.2/50 µSNo. of steps
16
No. of steps
17
Rated step Voltage
300V
Maximum Rated step Voltage
300V
Transition Time (Contact-Make before break)
(Time Interval )8 to 12 mili second
Control circuit rated Supply
110V AC/DC
