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On LoadTap Changers
OLTC type RS 5 / RS 5.3 RSV 5.3
Mechanical endurance 500,000 s.o. 500,000 s.o.
Electrical endurance 150,000 s.o. 300,000 s.o.
Maximum rated currents 200, 400, 630, 1250 A up to 1250 A
Highest voltage for equipment up to 72,5 kV up to 36 kV
Step voltage up to 3000 V up to 1000 V
Maximum number of tap operating positions 14 / 27 14 / 27
Tap selector insulation level K, L K
elliptic / round round
Three phase design for transformers with delta connected windings
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On Load Tap Changers
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OLTC type RS 6 / RS 6.3 RSV 6.3
Mechanical endurance 500,000 s.o. 500,000 s.o.
Electrical endurance 150,000 s.o. 300,000 s.o.
Maximum Rated Currents up to 1250 A up to 1200 A
Highest voltage for equipment up to 300 kV up to 300 kV
Step voltage up to 2500 V up to 2500 V
Maximum number of tap operating positions 14 / 27 14 / 27
Tap selector insulation level K, L, M K, L, M
elliptic / round round
Three phase design for regulation at neutral point
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On Load Tap Changers
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OLTC type RS 7 RSV 7.3
Mechanical endurance 500,000 s.o. 500,000 s.o.
Electrical endurance 500,000 s.o. 500,000 s.o.
Maximum Rated Currents 200, 400, 630, 800 A 400, 550, 700, 1200 A
Highest voltage for equipment up to 300 kV up to 300 kV
Step voltage up to 3000 V up to 3000 V
Maximum number of tap operating positions 107 107
Tap selector insulation level M, N M, N
round round
Single phase design with increased number of operating positions
On Load Tap Changers
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OLTC type RS 9 / RS 9.3 RSV 9.3
Mechanical endurance 1 000,000 s.o. 1 200,000 s.o.
Electrical endurance 500,000 s.o. 500,000 s.o.
Maximum Rated CurrentsI ph: 200, 400, 630, 800, 1200, 1600 AIII ph: 200, 400, 630 A
I ph: 400, 550, 700, 1200, 1500 AIII ph: 400, 550, 700
Highest voltage for equipment up to 300 kV up to 300 kV
Step voltage up to 4000 V up to 3500 V
Maximum number of tap operating positions 18 / 35 18 / 35
Tap selector insulation level K, L, M, N, P K, L, M, N, P
elliptic / round elliptic / round
Single phase design for regulation at any point on the winding
Three phase design for regulation at neutral point
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On Load Tap Changers
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OLTC type RS 12 RSV 12
Mechanical endurance 500,000 s.o. 1 200,000 s.o.
Electrical endurance 200,000 s.o. 800,000 s.o.
Maximum Rated Currents 200, 400 A 250, 400, 600 A
Highest voltage for equipment up to 145 kV up to 145kV
Step voltage up to 2500 V up to 2500 V
Maximum number of tap operating positions 14 / 27 12 / 23
round round
Single phase design for regulation at any point on the winding
Compact three phase designfor transformers with star and delta connected windings
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On Load Tap Changers
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OLTC type RS 21
Mechanical endurance 800,000 s.o.
Electrical endurance 200,000 s.o.
Maximum Rated Currents 310 A
Highest voltage for equipment 72,5 kV
Step voltage 1200 V
Maximun number of tap operating positions up to 23
Tap selector insulation level L
Carrying flange shape elliptic
Single phase design used in SF6 Gas Insulated Transformers
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On Load Tap Changers
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