On Load Gears

Capacitor Switch

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Maximum voltage rating	12 kV
Maximum current rating	200 A
Creepage Distance	450 mm
Line to ground BIL	95 kV
Open contact	95 kV
Nominal current	10 A
Dry, 1 minute with stand test	36 kV
Wet, 10 seconds with stand test	30 kV
Line to ground insulation level	95 kV
Open contact insulation level	95 kV
Nominal current	10 A
Capacitive Switching Current	200 A
Symmetric Short time Current	4500 A for 1 Second
Asymmetric Short time Current	95000 A for 1 Second
Asymmetric Making Current	9000 A for 1 Second
Dimension of OLTC	VIEWCLOSE

Load Break Switch

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Rated Voltage	11 kV
Maximum System Voltage	12 kV
Rated Current	630 A
Rated Short time with stand Current	20 kA
Rated peak with stand Current	50 KA
Rated Short Circuit making Current	50 kA
Rated breaking Current of Load with Power	630 A
Rated close ring breaking Current	630 A
Rated break Cable Charging Current	10 A
Rated idle load Transformer breaking	1600 kVA
Insulation level(rms)	35 kV
Mechanical lifetime(C-O cycle)
a)Vacuum load Switch	10000 Nos
b)Isolator and Earth Switch	≥ 2000 Nos.
Three phase simultaneous closing	≥ 5 ms

ABS 66

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Maximum voltage rating	72 kV
Maximum current rating	300 A
Direction of power flow	Uni-Directional
Tapping arrangement	Linear
OLTC design	Single Compartment
Maximum number of tap position	23
Maximum operating step voltage	1000 V
Maximum operating voltage Over tapping range	20000 V
Maximum continuous voltage to ground	72000 V
Maximum continuous voltage between phases	720000 V
Peak emergency current	450 A
Weight of tap changer Without oil	620 Kg
Weight of tap changer with oil	1430 Kg
Oil content	980 liters
Impulse voltage between phases	350 kVp(1.2/50 micro seconds)
Impulse voltage between Tap changer to earth	350 kVp(1.2/50 micro seconds)
Impulse voltage between Adjacent contacts	70 kVp(1.2/50 micro seconds)
Impulse voltage across tapping Range	200 kVp(1.2/50 micro seconds

ABS 132

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Maximum voltage rating	132 kV(Graded neutral)
Maximum current rating	300 A
Maximum system voltage	85 kV
OLTC design	Single Compartment
Maximum number of tap position	17
Maximum continuous current	300 A
Maximum operating step voltage	1800 V
Maximum operating over fine taps	14000 V
Maximum operating voltage over Coarse taps	14000 V
Maximum continuous voltage to Ground	85000 V
Time per tap change	4 – 6 seconds
Weight of tap changer without oil	650 Kg
Weight of tap changer with oil	1810 Kg
Impulse voltage between Tap changer to earth	350 kVp(1.2/50 micro seconds)
Impulse voltage between adjacent Contacts	200 kVp
Impulse voltage over pre selector	200 kVp
Impulse voltage between Selector and fine selector	250 kVp

OLG T5

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Maximum voltage rating	33 kV
Maximum current rating	1600 A
Direction of power flow	Bi-Directional
Tapping arrangement	Linear, coarse-fine, reversible
OLTC design	Divertor switch
Maximum Number of tap position	33
Maximum recovery voltage	20 kV (across reversing switch)
Approximate time per tap change	2 seconds
Impulse test voltage to ground and between phases	34 kV/110kVp(for all live parts to)
Impulse voltage with stand	26 kV/70kVp(across tapping range)
Insulation between phase	33 kV
Insulation of all part to ground for continuous voltage	33 kV
Step voltage	1000 V
Power frequency withstand test voltage for all live parts to ground	34 kV
Power frequency with stand test voltage across tapping range	26 kV
Power frequency with stand voltage across one tap	15 kV
Maximum recovery voltage across reversing Switch	20 kV
Weight of OLTC without oil	750 kg
Oil quantity	960 liters