Powerware Ferrups FE/QFE 500VA User Manual download pdf (Page 54)

Internal Bypass Switch Installation

Powerware

FERRUPS FE/QFE UPS (500 VA–18 kVA) Installation Guide : Rev A www.powerware.com

Installation Wiring Diagrams for Internal Bypass Switches

The following notes are referenced in the internal bypass switch wiring

diagrams (Figure 17 through Figure 20). To determine which diagram is

correct for your site, see Table 21 on page 45.

NOTE 1 The customer must provide input overcurrent protection as stated in NEC

Section 240-21 or local codes. Size the protection device according to local code

requirements.

NOTE 2 To properly install, complete the phase check starting on page 65.

NOTE 3 The customer must provide and install this ground connection according to

NEC Sections 250-20(d), 250-30, 250-62, and 250-64 or local requirements. This

grounding electrode conductor must be at least #8 AWG (8.36 mm

), per NEC

table 250-66. If the UPS input circuit conductors are larger than #8 AWG (8.36 mm

Powerware requires the grounding electrode conductor to be the same size (ampacity)

as the largest UPS input circuit conductor. Refer to NEC Section 110-3(b). Conduit is

not considered an acceptable grounding electrode conductor. Powerware does not

recommend routing the grounding electrode conductor through metallic conduit. This

conductor may require protection from physical damage according to local

requirements.

NOTE 4 All circuit conductors, including the neutral and equipment grounding

conductors, must be the same size (ampacity) and have the same rating (75°C copper

wire), and must be sized according to the input protection device.

NOTE 5 The customer must provide output overcurrent protection per NEC

Section 240-21 or local codes. Size the protection device according to local code

requirements.

NOTE 6 For maximum protection against electrical noise, use isolated ground

receptacles. Refer to NEC Section 250-146(d) or local requirements.

NOTE 7 For service, the UPS requires 36

(91.5 cm) clearance on the sides and in

front, 12

(30.5 cm) above the UPS, and 4

(10.0 cm) behind the bypass switch. A

minimum clearance of 4

(10 cm) is required on the sides, front, and back and 12

(30.5 cm) above the UPS for proper ventilation. See “Equipment Clearances” on

page 19 for clearances before installing the UPS. Use flexible metal conduit on the

UPS or the external battery cabinet if either must be moved.

NOTE 8 External UPS batteries are optional. The battery cables are connected to the

DC terminals on the DIN RAIL in the UPS. See “Battery Cabinet Installation” on

page 53 for external battery cabinet installation.

NOTE 9 UPS output circuits shall be installed in dedicated conduit systems and not

shared with other electrical circuits.

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Powerware Ferrups FE/QFE 500VA User Manual Page 54

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