General Warning; Before Commencing Repair Work; Special Conditions - Danfoss VLT AQUA Drive FC 200 Instruction Manual

2. Safety
2
Also, make sure that other voltage inputs have been disconnected, such as external 24 V DC, load
sharing (linkage of DC intermediate circuit), as well as the motor connection for kinetic backup.

2.1.2. General Warning

2.1.3. Before Commencing Repair Work

1.
2.
3.
4.

2.1.4. Special conditions

Electrical ratings:
The rating indicated on the nameplate of the adjustable frequency drive is based on a typical 3-
phase line power supply within the specified voltage, current and temperature ranges, which are
expected to be used in most applications.
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Warning:
Touching the electrical parts may be fatal - even after the equipment has been dis-
connected from line power.
Warning:
Touching the electrical parts may be fatal - even after the equipment has been dis-
connected from line power.
Also make sure that other voltage inputs have been disconnected, (linkage of DC
intermediate circuit), as well as the motor connection for kinetic backup.
Before touching any potentially live parts of the VLT AQUA Drive FC 200, wait at
least the minimum time as follows:
380-480 V, 150-600 hp [110-450 kW], wait at least 15 minutes.
525-690 V, 175-850 hp [132-630 kW], wait at least 20 minutes.
A shorter time is allowed only if indicated on the nameplate for the specific unit.
Leakage Current
The ground leakage current from the VLT AQUA Drive FC 200 exceeds 3.5 mA. Ac-
cording to IEC 61800-5-1, a reinforced protective ground connection must be
ensured by means of: a min. 0.015 in² [10 mm²] Cu or 0.025 in² [16 mm²] Al PE
wire or an additional PE wire, with the same cable cross-section as the line power
wiring, must be terminated separately.
Residual Current Device
This product can cause DC current in the protective conductor. If a residual current
device (RCD) is used for extra protection, only an RCD of Type B (time delayed) may
be used on the supply side of this product. See also RCD Application Note MN.90.GX.
02.
Protective grounding of the VLT AQUA Drive FC 200 and the use of RCDs must always
follow national and local regulations.
Disconnect the adjustable frequency drive from the line power.
Disconnect DC bus terminals 88 and 89.
Wait at least as long as the time mentioned in section 2.1.2.
Remove motor cable.
MG.20.P1.22 - VLT
VLT AQUA High Power Instruction Manual
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is a registered Danfoss trademark.