DFS1/DFS2 Power Installation Guide
55
Issue Number: 2
Safety i
Produ
M
Ele
ct
Te
5.1.3
Temperature, humidity and cooling method
Ambient temperature operating range:
5 °C to 35 °C, 40 °C with derate (41 °F to 95 °F).
Output current derating must be applied at ambient temperatures > 40 °C (104 °F).
Cooling method: Forced convection
Maximum humidity: 95 % non-condensing at 40 °C (104 °F)
The cubicle is intended to be installed internally and not outside)
5.1.4
Supply requirements
AC supply voltage:
400 V drive: 380 V to 480 V ±10 %
690 V drive: 500 V to 690 V ±10 %
Number of phases: 3
Maximum supply imbalance: 2 % negative phase sequence (equivalent to 3 % voltage imbalance
between phases).
Frequency range: 45 to 66 Hz
*
With natural cooling.
** With forced cooling = 1 m/s.
5.1.5
Motor requirements
No. of phases:3
Maximum voltage:
400 V drive: 480 V
690 V drive: 690 V
5.1.6
Storage
-40 °C (-40 °F) to +55 °C (131 °F) for long term storage, or to +70 °C (158 °F) for short term
storage.
Storage time is 2 years.
Electrolytic capacitors in any electronic product have a storage period after which they require
reforming or replacing.
The DC bus capacitors have a storage period of 10 years.
The low voltage capacitors on the control supplies typically have a storage period of 2 years and are
thus the limiting factor.
Low voltage capacitors cannot be reformed due to their location in the circuit and thus may require
replacing if the drive is stored for a period of 2 years or greater without power being applied.
It is therefore recommended that drives are powered up for a minimum of 1 hour after every 2 years
of storage. This process allows the drive to be stored for a further 2 years.
5.1.7
Altitude
Altitude range: 0 to 1,000 m (3,281 ft).
5.1.8
IP / Rating
The cubicle has three IP ratings, IP23, IP54 and IP55.
The IP rating of a product is a measure of protection against ingress and contact to foreign bodies
and water. It is stated as IP XX, where the two digits (XX) indicate the degree of protection provided
as shown in Table 5-3.
Summary of Contents for DFS 1
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