On Load Gears

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Type reference	RCS 36
Applicable standard	IEC 62271-100/IS 13118
Rated voltage	33kV
1 min A.C Power Frequency withstand test level	70kV
Impulse withstand	170kVp
Current ratings	2000A
Operating Sequence	O-0.3sec-CO-3 min-CO
Maximum Peak Current	66kA
Short Circuit Current(3 Sec)	26.3kA
Rated Short Circuit Making Current	66kA
Rated Short Circuit Breaking Current	26.3kA
First Pole to Clear factor	1.2
Dimension of OLTC	VIEWCLOSE

ABS 33

(A)ABS 11

Terminal Board

Drive Mechanism

Maximum voltage rating	36 kV
Maximum current rating	300 A
Maximum system voltage	38 kV
Tapping arrangement	Bi-Directional
OLTC design	Coarse-fine/reversing
Tapping arrangement	Single compartment
Maximum Number of position	23
Maximum operating step voltage	850 V
Maximum operating voltage Over fine taps	7200 V
Maximum operating voltage over coarse taps	7200 V
Maximum continuous voltage to ground	38000 V
Maximum continuous voltage Between phase	38000 V
Time per tap change	4-6 seconds
Impulse voltage between phase	170 kVp(1.2/50 micro seconds)
Impulse voltage between phase and earth	170 kVp(1.2/50 micro seconds)
Impulse voltage between adjacent contacts	70 / 30 kVp(1.2/50 micro seconds)
Impulse voltage over fine taps	70 / 30 kVp(1.2/50 micro seconds)
Impulse voltage over pre selector (where applicable)	70 kVp

ABS 66

(A)ABS 11

Terminal Board

Drive Mechanism

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 / 30 kVp(1.2/50 micro seconds)
Impulse voltage across tapping Range	70 / 30 kVp(1.2/50 micro seconds)

ABS 132

(A)ABS 11

Terminal Board

Drive Mechanism

Maximum voltage rating	132 kV(Graded neutral)
Maximum current rating	150 A
Maximum system voltage	85 kV
OLTC design	Single Compartment
Maximum number of tap position	17
Maximum continuous current	150 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

(A)ABS 11

Terminal Board

Drive Mechanism

Maximum voltage rating	12 kV
Maximum current rating	100 A
Direction of power flow	Bi-Directional
Tapping arrangement	coarse-fine/reversible
OLTC design	selector switch
Maximum Number of tap position	17
Maximum operating step voltage	250 V
Location of taps	Middle of delta winding/Neutral point of star
Maximum continuous voltage to ground	-
Maximum operating voltage between first and Last contact of fine selector	4000 V
Maximum operating voltage between contacts Pre selector	4000 V
Impulse voltage with stand between all live parts To ground	75 kVp(1.2/50 micro seconds)
Impulse voltage between adjacent contacts	25 kVp(1.2/50 micro seconds)
Impulse voltage over tapping range	25 kVp(1.2/50 micro seconds)
Impulse voltage between contacts of the Pre selector	25 kVp(1.2/50 micro seconds)
Power frequency voltage between all live parts To ground	28 kV
Power frequency between adjacent contacts	8 Kv
Power frequency over tapping range	8 Kv
Power frequency over tapping range	8 Kv
Weight of tap changer without oil	-
Power frequency between contacts of pre selector	8 Kv
Rated insulation level	28 kV of power frequency and 75 kVp impulse