EN/IEC61800-5-1 (Power Drive System Product Standard)
requires special care if the leakage current exceeds 3.5 mA.
Grounding must be reinforced in one of the following
ways:
•
Ground wire of at least 10 mm
2
.
•
Two separate ground wires, both complying with
the dimensioning rules.
See EN 60364-5-54 § 543.7 for further information.
Using RCDs
Where residual current devices (RCDs), also known as
ground leakage circuit breakers (GLCBs), are used, comply
with the following:
1. Use RCDs of type B only which are capable of
detecting AC and DC currents.
2. Use RCDs with an inrush delay to prevent faults
due to transient ground currents.
3. Dimension RCDs according to the system configu-
ration and environmental considerations.
Motor Thermal Protection
Motor overload protection is possible by setting parameter
1-90 Motor Thermal Protection to [4] trip. For the North
American market: Implemented function provides class 20
motor overload protection, in accordance with NEC.
Installation at High Altitudes
For altitudes above 6,600 ft [2,000 m], contact Danfoss.
1.1.1
Safety Instructions
•
Make sure the adjustable frequency drive is
properly grounded.
•
Do not remove AC line input connections, motor
connections or other power connections while
the adjustable frequency drive is connected to
line power.
•
Protect users against supply voltage.
•
Protect the motor against overloading according
to national and local regulations.
•
The ground leakage current exceeds 3.5 mA.
•
The [Off/Reset] key is not a safety switch. It does
not disconnect the adjustable frequency drive
from line power.
1.2
Introduction
1.2.1 Available Literature
NOTICE!
This Quick Guide contains the basic information
necessary for installing and running the adjustable
frequency drive.
If more information is needed, the literature listed below
can be downloaded from:
Table 1.2 Approvals
The adjustable frequency drive complies with UL508C
thermal memory retention requirements. For more
information, refer to the section Motor Thermal Protection
in the Design Guide.
1.2.2
IT Line Power
NOTICE!
IT Line Power
Installation on an isolated line power source, i.e., IT line
power.
Max. supply voltage allowed when connected to line
power: 440 V.
As an option, Danfoss offers recommended line filters for
improved harmonics performance.
Quick Guide Quick Guide
MG02B922 Danfoss A/S © Rev. 2014-02-27 All rights reserved. 3
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