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Silent Block

A transformer converts an alternating current to an alternating magnetic flux and then back into an alternating current. The alternating magnetic flux can result in mechanical motion in the iron core of the transformer, which can cause humming. We refer to this as magnetostriction.

In general, the higher the capacity of the transformer, the louder the hum. The humming is often transferred via the fixings to the floor where the transformer is located, and so to the rest of the building.

Our vibration dampers, Silent Blocks, can be installed to prevent this. These rubber dampers absorb much of the vibration coming from the transformer. They don't prevent the transformer itself humming, but they do prevent the vibrations going into the floor.

Whether transformer hum is found to be a nuisance depends on a number of factors:

1) The transformer itself

A larger transformer will hum louder. Exceptions to this are found in our EC/IRC, ECT/IRC and PVT series. These types barely generate any noise as the magnetic induction is very low.

2) The substrate

It's fairly obvious that a timber structure will result in more noise than a poured concrete floor.

3) The environment

A transformer in a plant room in the basement will cause less disturbance than one located in a cabinet in an office space.

We can supply a range of vibrations, each capable of handling a certain maximum weight. A transformer of up to 80kg can be damped with four Silent Block 20s (20kg loadbearing capacity each).

There are 7 products.

Showing 1-7 of 7 item(s)
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SILENT BLOCK 20

Price €42.54

Vibration damper for transformers up to 80 kg (4 pieces are needed per transformer)

Dimensions A x B x C (mm): 85 mm X 57 mm X 25 mm

Delivery time: 2 to 3 weeks (contact us)

SILENT BLOCK 50

Price €42.54

Vibration damper for transformers up to 200 kg (4 pieces are needed per transformer)

Dimensions A x B x C (mm): 85 mm X 56,5 mm X 25 mm

In stock

SILENT BLOCK 75

Price €60.54

Vibration damper for transformers up to 300 kg (4 pieces are needed per transformer)

Dimensions A x B x C (mm): 114 mm X 76 mm X 35 mm

In stock

SILENT BLOCK 120

Price €89.98

Vibration damper for transformers up to 480 kg (4 pieces are needed per transformer)

Dimensions A x B x C (mm): 136 mm X 96 mm X 40 mm

In stock

SILENT BLOCK 185

Price €89.98

Vibration damper for transformers up to 480 kg (4 pieces are needed per transformer)

Dimensions A x B x C (mm): 136 mm X 96 mm X 40 mm

Delivery time: 2 to 3 weeks (contact us)

SILENT BLOCK 275

Price €112.02

Vibration damper for transformers up to 480 kg (4 pieces are needed per transformer)

Dimensions A x B x C (mm): 150 X 100 mm X 45 mm

In stock

SILENT BLOCK 500

Price €326.75

Vibration damper for transformers up to 480 kg (4 pieces are needed per transformer)

Dimensions A x B x C (mm): 150 X 150 mm X 6350,00%

Delivery time: 2 to 3 weeks (contact us)