Electrical Installation Considerations; Electrical Connections - Liebert UPS User Manual

Model
#
GXT6000T
GXT10000T
* Increase dissipation 25% for 208X, and 240X transformer models.
** Decrease output rating 10% for 208 and 208X model.

ELECTRICAL INSTALLATION CONSIDERATIONS

This UPS must be installed by competent electrical personnel and wired in
accordance with local/national electrical codes.
The following information is provided for your guidance.
On start-up, the UPS will take a half cycle inrush current of up to 3 times the
rated current. This must be taken into account when selecting the overload
protection device at the input Utility supply distribution point. To avoid random
tripping on start-up, we recommend that the input Utility supply be protected with
an MCB capable of withstanding this initial inrush.
The utility input supply cable must be connected to the UPS via a wall mounted
double pole circuit breaker, rated to carry the input current and be capable of
breaking the maximum prospective short circuit current of this branch circuit. The
breaker is to be mounted within six feet of the UPS and be readily accessible to
the operator.

ELECTRICAL CONNECTIONS

The UPS is supplied with an input/output/battery terminal block assembly on the
rear of the UPS within a cable box. (see outline drawing) The cable box (gland
plate) can be removed to enable knockouts to be removed, or new holes drilled,
to secure the cables.
The cable sizes and distribution methods used during installation are subject to
local/national electrical codes of practice, and therefore are not detailed here.
The following tables detail the standard current ratings. The UPS rating plate
gives details of the current ratings for alternative output voltages.
The terminals will accept wire sizes up to the values below:
GXT6000 = 8 AWG
GXT10000 = 6 AWG
(75°C copper wire)
Terminal tightening torque is 35 in-lb.
AIRFLOW
3
Cfm m h
130 221
270 459
Recommended for all GXT6000 wiring.
Recommended for all GXT10000 wiring.
DISSIPATION*
Watts
K Btu/hr
504 1.7
840 2.8
8
OUTPUT
RATING**
VA Watts
6000 4200
10000 7000