Vertiv
™
| Liebert® EXL™ 625-1100kVA Installation Manual | Rev. 3 | 02/17 27
Table 8 Remote Backfeed Breaker specifications
Power
Class
kAIC
rating
RBB Specification
RBB General
Specification
Comments
625-
800kVA
65kA
Module
UL-Listed 489 (Molded Case Circuit Breaker) or UL 1066
(Low Voltage AC Power Circuit Breaker), which are
required for use in UL-listed switchgear or switchboards.
The circuit breaker must have a short-time rating of 65kA
at a maximum voltage of 480V for three cycles.
The remote breaker must be
equipped with shunt trip and
auxiliary contacts for proper
operation with the UPS.
No UPS internal fuse
protection on
rectifier and bypass
input
100kA
Module
UL-Listed 489 (Molded Case Circuit Breaker) or UL 1066
(Low Voltage AC Power Circuit Breaker), which are
required for use in UL-listed switchgear or switchboards.
The circuit breaker must have a short-time rating of
100kA at a maximum voltage of 480V for three cycles.
No UPS internal fuse
protection on the
rectifier input. The
bypass input has
fuse protection.
1000-
1200kVA
65kA
Module
UL-Listed 489 (Molded Case Circuit Breaker) or UL 1066
(Low Voltage AC Power Circuit Breaker), which are
required for use in UL-listed switchgear or switchboards.
The circuit breaker must have a short-time rating of 65kA
at a maximum voltage of 480V for three cycles.
The remote breaker must be
equipped with shunt trip and
auxiliary contacts for proper
operation with the UPS.
No UPS internal fuse
protection on
rectifier and bypass
input
100kA
Module
UL-Listed 489 (Molded Case Circuit Breaker) or UL 1066
(Low Voltage AC Power Circuit Breaker), which are
required for use in UL-listed switchgear or switchboards.
The circuit breaker must have a short-time rating of
100kA at a maximum voltage of 480V for three cycles.
UPS internal fuse
protection exists on
rectifier and bypass
input
Table 9 Remote Backfeed Breaker contacts
Item
Terminal Block Pin
Connect to (Description of External Item)
Not Used
TB4 1 Not Used
TB4 2 Not Used
Not Used
TB4 3 Not Used
TB4 4 Not Used
Not Used
TB4 5 Not Used
TB4 6 Not Used
Not Used TB4 7 Not Used
Not Used TB4 8 Not Used
Not Used TB4 9 Not Used
Not Used TB4 10 Not Used
Breaker Auxiliary Status
TB5 1 RBB Aux Status Common
TB5 2 RBB Aux Status, Normally Closed Contact, Closed = CB is Open
TB5 3 RBB Aux Status, Normally Open Contact, Open = CB is Open
Breaker ST Control
TB5 4 RBB ST Return
TB5 5 RBB ST +48VDC
1. For TB7, Pins 1-3, each contact has:
Maximum voltage: 24VDC
Maximum current: 10mA
Wire range: #14-22AWG
Maximum length: 500 ft. (150m)
2. All external wire field-supplied.
3. All wiring must be in accordance with national and local electrical codes.
To Next Page
Loading...
Need help?
General
