3.11.3Electrical Specifications
Refer to the individual component’s specifications.
Electromagnetic compliance (EMC)
The equipment contained in the power system complies with the specifications of FCC, Part 15, Subpart B for class A equipment, CSA 108.8 for class A and CISPR 22 for class A.
Electrostatic discharge (ESD) immunity
No equipment damage or malfunctions shall occur when electrostatic discharge voltages of sever- ity level 2 and 4, as specified by
3.11.4Environmental Specifications
Operating
Temperature: 0° to +50°C (32° to 122°F)
Humidity: 0 to 95%
Altitude: Sea level to 2134 m (7000 ft)
Transportation
NOTE
Do NOT ship with the rectifiers installed in the rectifier cabinet(s).
During transportation the equipment may be subjected to the following conditions without damage:
Temperature:
Humidity: 0 to 95% (non condensing) 4kPa max. WVP for 10 days
Vibration:
Shock:
Storage
Temperature:
Humidity: 0 to 95% (non condensing) 4kPa max. WVP for 10 days
Heat dissipation
A Helios DC System 4000/48 rectifier cabinet equipped with six Helios Rectifier 200I/48 or 200E/ 48 will dissipate a maximum of 8,010 watts or 27,350 Btu/hr.
3.11.5Floor and Point Loading
The floor loading is based on a footprint of 600 mm x 600 mm (23.6 in. x 23.6 in.) plus a
The point loading is based on distributing the cabinet weight over four shims, each with an assumed area of 25.8 cm2 (4 in.2).
See Figure 1 for a typical system configuration for floor and point loading calculations.
Table 31 Floor and point loading
Cabinet type | Floor loading | Point loading |
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|
|
Control and distribution cabinet | 41.3 kN/sq m (90.9 lb/sq ft) | 34.5 N/sq cm (50 lb/sq in.) |
|
|
|
Auxiliary distribution cabinet | 32.3 kN/sq m (71 lb/sq ft) | 26.9 N/sq cm (39 lb/sq in.) |
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|
|
Rectifier cabinet | 50.1 kN/sq m (110.2 lb/sq ft) | 41.8 N/sq cm (60.6 lb/sq in.) |
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|
|
Specifications 27
