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 IEC-801-2, are applied to exposed parts of the power system.

3.11.4Environmental Specifications

Operating

Temperature: 0° to +50°C (32° to 122°F)

Humidity: 0 to 95% non-condensing

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: -50° to +75°C (-58° to +167°F)

Humidity: 0 to 95% (non condensing) 4kPa max. WVP for 10 days

Vibration: TR-NWT-000063 section 5.4.4 Transportation Vibration (packaged equipment)

Shock: TR-NWT-000063, Section 5.4.1 Handling Drop Tests, and Section 5.4.3 Installation Shop Tests

Storage

Temperature: -50° to +75°C (-58° to +167°F)

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 30-inch aisle width (15 inches front and rear).

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

 

 

 

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.)

 

 

 

Rectifier cabinet

50.1 kN/sq m (110.2 lb/sq ft)

41.8 N/sq cm (60.6 lb/sq in.)

 

 

 

Specifications 27

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Liebert 4000 Electromagnetic compliance EMC, Electrostatic discharge ESD immunity, Environmental Specifications Operating

1500, 6000 A, 4000, 3000 specifications

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