Siemens SINAMICS G120P Operating Instructions Manual page 10

Braking resistors for pm330 power modules

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General

Risk of fire and damage to equipment due to short-circuit/ground fault

The cables to the braking resistor must be routed so that a ground fault or short circuit can

be ruled out. A ground fault can result in fire with the associated smoke.

• Protect the cables from mechanical damage.

• Comply with local installation regulations that enable this fault to be ruled out.

In addition, apply one of the following measures:

• Use cables with double insulation.

• Maintain adequate clearance, using spacers, for example.

• Route the cables in separate cable ducts or pipes.

Risk of fire through power loss of the braking resistor

A braking resistor which is not mounted properly can cause components to overheat with

the associated risk of fire and development of smoke.

• Only mount braking resistors on a baseplate/floor.

• Mount the braking resistors so that they are in the vertical position and freestanding.

• Maintain sufficient clearance to objects that can burn.

• Do not place any objects on or above the braking resistor.

Risk of burns due to high surface temperature of the braking resistor

The braking resistor can become very hot. You can get seriously burnt when touching the

surface.

• Mount the braking resistors so that contact is not possible. If this is not possible, attach

NOTICE

Material damage due to water penetrating the braking resistor

Water penetration may damage the braking resistor.

• For outdoor installations a hood must be provided to protect it from precipitation in

WARNING

Sufficient space must be available for dissipating the energy converted by the braking

resistor.

CAUTION

a clearly visible and understandable warning notice at hazardous positions.

accordance with degree of protection IP20.

Operating Instructions, 10/2016, A5E32845373B AD

Braking resistors

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