CAUTION STATEMENTS
MVE User Manual (710-17074-00G) |
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Caution Statements
Caution Statements cannot cover every potential cause of equipment damage but can highlight common causes of damage. It is
the installer's responsibility to read and understand all instructions in this manual prior to installing, operating or maintaining the
equipment, to follow good electrical practice including applying appropriate personal protective equipment and to seek advice
before operating this equipment in a manner other than as described in this manual.
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Read and understand the entire manual before installing operating, or maintaining the MVE. Follow all applicable
local and national codes.
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Apply appropriate personal protective equipment (PPE) and clothing, and follow safe electrical work practices.
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Disconnect all power and ensure that the MVE is de-energised before servicing the equipment.
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Do not rely on visual indications such as switch position or fuse removal for determining a de-energised condition.
Always assume that a terminal is energised until it is checked and ensure that a terminal is de-energised and
grounded.
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Isolate the MVE completely from the power supply before attempting any work on the MVE or motor.
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Always use a properly rated voltage sensing device to confirm power is off.
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Before servicing the MVE, ensure that all static charge has been discharged by grounding it with an appropriate
grounding device.
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Metal swarf in the cabinet can cause equipment failure.
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The control inputs are powered by the soft starter. Do not apply external voltage to the control input terminals.
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Contacts or switches operating the control inputs must be suitable for low voltage, low current switching (ie gold
flash or similar).
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Cables to the control inputs must be segregated from mains voltage and motor cabling.
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Some contactor coils are not suitable for direct switching with PCB mount relays.
WARNING - ELECTRICAL SHOCK HAZARD
The MVE contains dangerous voltages when connected to mains voltage. Only a qualified electrician should carry out
the electrical installation. Improper installation of the motor or the MVE may cause equipment failure, serious injury or
death. Follow this manual and local electrical safety codes.
SHORT CIRCUIT
The MVE is not short circuit proof. After severe overload or short circuit, the operation of the MVE should be fully tested
by an authorised service agent.
GROUNDING AND BRANCH CIRCUIT PROTECTION
It is the responsibility of the user or person installing the MVE to provide proper grounding and branch circuit
protection according to local electrical safety codes.
ARC FLASH HAZARD
Medium voltage equipment has a potential risk of arc flash. When insulation or isolation between electrified
conductors is breached or can no longer withstand the applied voltage, a short circuit occurs through the air. This may
cause a phase-to-ground and/or a phase-to-phase fault.
Although unlikely, arc fault can be caused by:
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Contamination in the insulation caused by deterioration over time
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Inadequate insulation system on cable terminals
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Overvoltage
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Incorrect protection coordination settings
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Overheating of the contact area, due to incorrect tightening of connections
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Introduction of foreign matter, including swarf, vermin, tools or maintenance equipment left in the starter
AuCom medium voltage equipment has been designed to mitigate an arc fault, however it is the responsibility of the
site engineer to ensure that personnel are protected from serious injury that may result from an arc fault.
