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4 safety and installation information – NORD Drivesystems BU0135 User Manual

Page 9

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1 General

BU 0135 GB-2713

Pre-series version

9

1.4 Safety and installation information

SK 1x5E motor starters are equipment for use in industrial high voltage systems and are operated at
voltages that could lead to severe injuries or death if they are touched.

· Installation and other work may only be carried out by qualified electricians and with the

device disconnected. The operating instructions must always be available to these
persons and must be strictly observed.

· Local regulations for the installation of electrical equipment and accident prevention

must be complied with.

· For safe isolation from the mains, all poles of the supply cable to the motor starter must

be disconnected.

· Even during motor standstill (e.g. caused by an electronic block, blocked drive or output

terminal short circuit), the line connection terminals, motor terminals and braking resistor
terminals may still conduct hazardous voltages. A motor standstill is not identical to
electrical isolation from the mains.

· Warning, under certain settings the motor starter can start automatically after the mains

are switched on.

· The motor starter is only intended for permanent connection and may not be operated

without effective earthing connections that comply with local regulations for large
leakage currents (> 3.5mA). VDE 0160 stipulates the installation of a second earthing
conductor or an earthing conductor cross-section of at least 10 mm

2

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· SK 1x5E motor starters are maintenance free in normal operation. The cooling surfaces

must be regularly cleaned with compressed air if the ambient air is dusty.

CAUTION

The heat sink and all other metal components can heat up to temperatures above 70°C.

When mounting, sufficient distance from neighbouring components must be maintained.
When working on the components, allow sufficient cooling time beforehand

Protection against accidental contact may need to be provided.

ATTENTION

DANGER TO LIFE!

Under certain circumstances, the motor starter can continue to carry voltages for up to 1
minute after being switched off at the mains. Starter terminals, motor cables and motor
terminals may carry voltage!

Touching open or free terminals, cables and equipment components can lead to severe injury
or death!

Work may only be carried out by qualified specialist electricians and with the electrical supply
to the equipment disconnected!

CAUTION

Children and the general public must be kept away from the equipment!

The equipment may only be used for the purpose intended by the manufacturer.
Unauthorised modifications and the use of spare parts and additional equipment which has
not been purchased from or recommended by the manufacturer of the device may cause fire,
electric shock and injury.

Keep these operating instructions in an accessible location and give them to all operators!

WARNING

This product is intended for use in an industrial environment and is subject to sales
restrictions according to IEC EN 60947-4-2. In a domestic environment, this product can
cause high frequency interference, in which case the user may be required to take
appropriate measures.

An appropriate measure would be the inclusion of a recommended mains filter.