Electrical Wiring; Utility Input Connection - ABB TLE Scalable Series Installation Manual

22/54

4.7 Electrical wiring

Warning!
UPS installation and connection must be performed only by an ABB Service Technician!
Refer to the "Safety prescriptions - Installation" described on Chapter 1.
It is the responsibility of the installation technician to ensure that all local and national electric
codes are adhered to.

4.7.1 Utility input connection

Note!
Ensure that the AC and DC external isolators are OFF and locked out to prevent their inadvertent
operation.
Do not apply power to the equipment prior to the commissioning by an ABB Service Technician.
Before any other input connection, connect and check the grounding wire.
The UPS has available input terminations for the Rectifier and Bypass.
The unit may be powered from a Common Input source or Dual Input sources if desired.
Dual Input Utility Rectifier & Bypass
Fig. 4.7.1-1 Dual Input Utility Rectifier & Bypass
Note!
Always verify that the received UPS is as per the configuration ordered.
While installing UPS dual source, the interconnection links BR1, BR2 and BR3 must be removed.
See Fig. 4.8.2-2.
Connect a single input Neutral to Bypass Utility (inside the UPS, common Neutral for Bypass and
Rectifier).
Common Input Utility Rectifier & Bypass
Fig. 4.7.1-2 Common Input Utility Rectifier & Bypass
Note!
In this case, the interconnection links BR1, BR2 and BR3 on the input bus bars must remain
connected.
TLE Scalable Series 40 to 150 UL S1
The Bypass and Rectifier use different power
sources (F31 and F32 inputs).
In this case, when the Rectifier-input fuses are
opened, the Automatic Bypass is supplied by
the other connection.
The same power source is to be used for both
Bypass supply and Rectifier input (input F3).
Bear in mind that when the Utility fuses are
opened there is a supply failure to the
Rectifier as well as to the Automatic Bypass.
UPS Installation Guide / REV-B