Jung J630D, Manual

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J630D
2. Technical data / transportation / commissioning 26.7.02 43
2.8 Electrical connections
• Check all the electrical terminals in the control cubicle and on the machine prior
to commissioning.
• Three-phase connection: L1-L2-L3 must be connected correctly in the rotary
field.
• Earth connection: PE (yellow/green). This connection is designed for a four-
wire system.
• Always use original fuses with the specified amperage. In the event of a fault
in the electrical power supply, switch off the machine immediately.
• Check/inspect the electrical components of the machine at regular intervals.
Any defects, such as loose connections or scorched cables, must be remedied
immediately.
• The electrical connections must comply both with statutory requirements and
with local electricity rules.
• Should any work be necessary on live parts, start by switching off the power
supply. If this is not possible for technical reasons, or if it makes no sense to
do so, ask for assistance from a second person, who can then press the
EMERGENCY STOP button or the main switch to release the voltage in an
emergency. Cordon off the working area with a red and white chain and a war-
ning sign. Always use insulated tools.
The electrical connections must always be made by a qualified elec-
trician in accordance with the recognized rules of sound electrical
practice.
Please study section 1.0 "Safety" carefully beforehand and make
sure you have fully understood the instructions it contains.
The plug-in electrical connectors are clearly marked and must be
connected in accordance with the circuit diagram supplied together
with the machine. The locking screws provided at these connections
must always be tight.
Check the direction of rotation of the motors after making the electri-
cal connections, in order to determine whether the phases have
been connected the right way round.
If a connected load of more than 7 kW is required for wet grinding
equipment, a second connecting cable must be used.
The supply voltage is 400 V (maximum tolerance: -5% to +10%). If
your mains voltage deviates from this value, you must connect a
series transformer upstream.