Safety Information And Warnings - Siemens SINAMICS PERFECT HARMONY GH180 Function Manual

2.3

Safety Information and Warnings

Hazardous Voltage!
• Always follow the proper lock-out/tag-out procedures before beginning any maintenance
• Always follow standard safety precautions and local codes during installation of external
• Hazardous voltages may still exist within the VFD cabinets even when the disconnect
• Only qualified individuals should install, operate, troubleshoot, and maintain this VFD. A
• Always work with one hand, wear electrical safety gloves, wear insulated electrical hazard
• Always use extreme caution when handling or measuring components that are inside the
• Use only instrumentation (e.g., meters, oscilloscopes, etc.) intended for high voltage
• Never assume that switching off the input disconnector will remove all voltage from
• Never touch anything within the VFD cabinets until verifying that it is neither thermally hot
• Never remove safety shields (marked with a HIGH VOLTAGE sign) or attempt to measure
• Never operate the VFD with cabinet doors open. The only exception is the control cabinet.
• Never connect any grounded (i.e., non-isolated) meters or oscilloscopes to the system.
• Never connect or disconnect any meters, wiring, or printed circuit boards while the VFD is
• Never defeat the instrument's grounding.
• When a system is configured with VFD bypass switchgear (e.g. contactors between line and
• When a system is configured with VFD pre-charge, medium voltage is present on the
NXGPro+ Communication Manual
Function Manual, AA, A5E50226719
DANGER
or troubleshooting work on the VFD.
wiring. The installation must follow wiring practices and insulation systems as specified in
IEC 61800-5-1.
switch is open (off) and the supply power is shut off.
qualified individual is "a person, who is familiar with the construction and operation of the
equipment and the hazards involved."
rated safety shoes, and safety goggles. Also, always work with another person present.
enclosure. Be careful to prevent meter leads from shorting together or from touching other
terminals.
measurements (that is, isolation is provided inside the instrument, not provided by isolating
the chassis ground of the instrument).
internal components. Voltage is still present on the terminals of the input disconnector.
Also, there may be voltages present that are applied from other external sources.
nor electrically alive.
points beneath the shields.
energized.
motor, and VFD and motor), these switches should be interlocked so that the line voltage
is never applied to the VFD output if the medium voltage input is removed from the VFD.
primary side of the input transformer and upstream device even though the MV contactor
is not closed.
2.3 Safety Information and Warnings
Safety notes
15