Off-load tap changers for transformers (DETC) are used to change the transmission ratio in order to adjust the transformer to grid conditions. Therefore tap changer for transformers have several pins to connect with the coil windings. We produce a large variety of tap changers for distribution transformers in several sizes for current up to 1250 A. The diagram can be produced as delta, star, series-parallel oder common output per phase application. Some transformer tap changer types can be also used parallel. 

The setting device is either available made of nylon or aluminium. Some setting device types can be protected with a protection cover. Changing direction is either designed clockwise or counterclockwise.

Transformer Tap changer types

• Type KHR (2 - 7 positions / 20 - 30 kV / 10 - 63 A)
• Type KHM (2 - 11 positions / 20 - 30 kV / 30 - 120 A)
• Type KHZ (2 - 11 positions / 10 - 30 kV / 30 - 120 A)
• Type KHF II (2 - 11 positions / 20 - 60 kV / 150 - 400 A)
• Type KHF III (2 - 6 positions / 20 - 30 kV / 400 - 800 A)
• Type KHF IV (2 - 5 positions / 20 - 30 kV / 800 - 1250 A)

Tap changer properties upon request

• Anodized aluminum parts
• Stainless steel parts
• Tinned, silver- or cadmium plated brass or copper parts

Overview on different types regarding current and voltage:

 

For further details please find information brochures for download below.

DATA tap changer KHF II_ENG1

DATA tap changer KHF III_ENG1

DATA tap changer KHF IV_ENG1

DATA tap changer KHM_ENG1

DATA tap changer KHR_ENG1

DATA tap changer KHZ_ENG1

DATA tap changer type overview1