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Sigmatek FDD Sizes 7 to 9 Power Installation Guide
Table 5-6 Power losses from the front of the drive when through-panel mounted
5.1.4 Temperature, humidity and cooling method
Ambient temperature operating range:
- 20 °C to 55 °C (- 4 °F to 131 °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)
5.1.5
AC Supply requirements
AC supply voltage:
400 V drive: 380 V to 480 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
For UL compliance only, the maximum supply symmetrical fault current must be limited to 100 kA
5.1.6
Motor requirements
No. of phases: 3
Maximum voltage:
400 V drive: 530 V
5.1.7 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.
5.1.8 Altitude
Altitude range: 0 to 3,000 m (9,900 ft), subject to the following conditions:
1,000 m to 3,000 m (3,300 ft to 9,900 ft) above sea level: de-rate the maximum output current from
the specified figure by 1% per 100 m (330 ft) above 1,000 m (3,300 ft)
For example at 3,000 m (9,900 ft) the output current of the drive would have to be de-rated by 20 %.
Frame size
Power loss
7
204 W
8
347 W
9
480 W
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