Specialty Transformer Components: Specialty Line of Switches

Oil switches

De-Energized Tap Changers

Half Moon Bridging Tap Changer (40B)

Used for switching the tap positions on windings to adjust the voltage for Large Distribution Transformers

1150kV BIL, 150 kV BIL, 200 kV BIL & 250 kV BIL
Five (5) position
200, 400, 600, 700, 800 AMPs.
Bolt threaded studs
With standard or Flexible Universal joint
With T handle and index plate

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Snap Action Rotary Bridging Tap Changer (41C)

Used for switching the tap positions on HV windings to adjust the voltage for Small Power transformers

110, 150, 200, 250kV BIL, up to 350 kV BIL
Five (5) or Seven (7) position
200, 400, 600, 700, 800 and 1000 AMPs.
With standard or Flexible Universal joint
With T handle and index plate
Bolt threaded studs

RFQ

Bridging Ring Style Tap Changer (42B)

Used as the tap changer to adjust the voltage of distribution transformers

125 and 200 AMP
Wall mount and right angle drive
Five (5) and Seven (7) position
One(1), two(2), three(3) and six(6) decks
15kV / 110 kV BIL or 46 kV / 250 kV BIL
Wrench operator or T handle

RFQ

Snap Action Rotary Bridging Tap Changer (44B)

Used for switching the tap positions on HV windings to adjust the voltage for Medium Power transformers

450 kV BIL, 550 kV BIL, up to 750 kV BIL
Five (5) or Seven (7) position
200, 400 or 600 AMPs.
With standard or Flexible Universal joint
With T handle and index plate
Crimped studs

RFQ

Linear Type Bridging Style Tap Changer (45L)

Used for switching the tap positions on windings to adjust the voltage for Large Distribution & Small Power Transformers.

From 110, up to 350 kV BIL
Five (5) or Seven (7) position
200, 400, or 600 AMPs.
With Geneva mechanism.

RFQ

Linear Type Bridging Style Tap Changer (46L)

Used for switching the tap positions on windings to adjust the voltage for Large Distribution & Small Power Transformers.

From 450, up to 900 kV BIL
Five (5) or Seven (7) position
200, 400, or 600 AMPs, per deck
With Geneva mechanism.
One, Two or Three column
Single or double deck per phase

RFQ

Linear Type Series Parallel (22L)

Used in Small and Medium Power Transformers for connecting portion of windings (usually HV Windings) in series or parallel connection to change transformer ratio.

95kV BIL, 125, kV BIL, and 200 kV BIL up to 250 kV BIL
Two (2) position (series/parallel)
One (1) to Three (3) columns phases

RFQ

Special Switches

Series Parallel (22B)

Used in Small and Medium Power Transformers for connecting windings (usually HV) in series or parallel connection to change transformer ratio.

125, kV BIL, and 150 kV BIL up to 200 kV BIL
500 AMPs
Two (2) position (series/parallel)
One (1) to Three (3) phases

RFQ

Delta Wye (26B)

Used in Small and Medium Power Transformers for connecting windings in Delta or WYE connection to change transformer ratio.

125, kV BIL, and 150 kV BIL
500 Amps to 2000 Amps
Two (2) position
36 deg. or 72 deg. rotation
T-handle with pad lock or pull to turn.

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Dual Voltage (24B)

150 kV BIL or 200 kV BIL
500 Amp to 850 Amps , (per deck)
Two (2) position Three (3) phase (3, 6 or 9 decks)
Side wall mount with right angle gearbox.
With Universal Joint, Gear Box
36 or 72 degree rotation

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Bladed – Bridging & Common Center (43B)

30 – 200 kV BIL
500 to 2000 manually operated or
up to 6000 motor operated
2 to 13 positions

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Network Switches

Grounding Network Switches (50B or 52B)

Used on network transformers for disconnecting the primary feeder from the transformer and connecting incoming feeder to the ground

95kV BIL, 125, kV BIL, and 200 kV BIL
Two (2) position (open/ground) or Three (3) position (open/closed/ground)
Side wall mount, with welded or bolted front plate.
Single or Double solenoids.
Magnetic break assembly on closed contact,
Phase sequence grounding.

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Motor Operated Oil Switches

Motor operated Oil switches (34B series)

Used as the tap-changers to adjust the voltage on LV windings

200 to 4500 AMP,
600 volts to 46kV
Standard up to 8 position
Up to 6 decks

RFQ