Elmo Rietschle G-BH1e - Manual (Page 21)

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Installation
4.4 Electrical installation
 DANGER!
Electrical danger!
Malpractice can result in severe injuries and
material damage!
 DANGER!
Electrical danger!
The electrical connection may be carried out by
trained and authorized electricians only!
 DANGER!
Electrical danger!
Before beginning work on the pump−motor unit
or system, the following measures must be
carried out:
 Deenergize.
 Secure against being switched on again.
 Determine whether deenergized.
 Ground and short−circuit.
Cover or block off adjacent energized parts.
 DANGER!
Electrical danger!
The terminal box of the frequency inverter must
be free from
 foreign bodies,
 dirt,
 humidity.
Frequency inverter and cable entries must be
tightly closed so as to make them dustproof
and waterproof. Check for tightness at regular
intervals.
 DANGER!
Electrical danger!
Danger of electrical shock when a defective
pump−motor unit is touched!
Have electrical equipment checked regularly by
a qualified electrician.
4.4.1 Important notes
Regulations
The electrical connection must be carried out as
follows:
 according to the corresponding VDE
regulations and national regulations.
 according to the applicable national, regional
and system−dependent regulations and
requirements.
 according to the regulations of the utility
company applying to the place of installation.
Electrical power supply
Observe the rating plate of the frequency
inverter. It is imperative that the operating
conditions correspond to the data given on the
rating plate.
Electrical connection ( 22), ( 25)
 The electrical connection must be
permanently safe.
 The electrical connection to the PE conductor
must be permanently safe.
 There may be no protruding wire ends.
Control cable connection ( 28)
 Use shielded incoming cables.
 Do not route control cables together with
power cables in order to avoid interference
injections.
 For optimum shielding use the shield
connections to ensure large−surface contact
when connecting the shield in the terminal
box.
 Control cables