Installation

2.3Cable Installation

2.3.1 Wiring Preparation

! WARNING

Please read this section thoroughly before attempting to install wiring to this unit.

This UPS should be installed by a qualified / certified electrician.

Removing the Cover Plates

On the back

Remove Cover Plates

of the UPS,

 

cover plates

 

are over the

 

input and

 

output

 

terminals, as

 

shown at

 

right. Keep

 

screws and

 

plates to one

 

side.

 

Configuring the Bypass Voltage (TB2)

The UPS voltage is factory-set to 208 V. Should the user have a utility supply of 240 V, the bypass voltage jumper will have to be changed to ensure correct output voltage. After selection, retorque jumper screws to

28in-lb.

Bypass Voltage Jumper

 

OR

208 V

240 V

(default)

 

Customer-Provided Overcurrent Protection

A branch rated overcurrent protection device (cir- cuit breaker or fused disconnect switch) must be installed for the AC input.

If the start-up is on bypass, the UPS has a six- cycle inrush current that is up to 20 times the rated output current. This must be taken into account when selecting the overload protection device at the AC input supply distribution point. To avoid random tripping on start-up, it is recommended that the AC input supply be protected with a circuit breaker capable of withstanding this initial inrush.

This UPS is fitted with EMI suppression filters. Earth leakage current is less than 40mA. Transient and steady state earth leakage currents may occur when starting the equipment. This should be taken into account when selecting ground current detection devices, as the earth leakage currents of both the UPS and load will be carried.

Input and output cables must be run in separate conduits.

11