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2.6. Electrical
2.6.1. Power
Maximum 9 x 1800W rectifiers = 16.2KW
2.6.2. AC Input Configurations
Cabinet Type
PBA-01
PBA-02
PBA-03
2.6.3. Rated AC Voltage
1Ø 175* to 275V AC
3Ø 303* to 476V AC2Ø 175* to 275V AC
*Actual low AC rating will be dependent upon rectifiers model fitted.
2.6.4. Continuous AC Voltage
90 to 175* V/Ø AC (with reduced output)
275 to 300** V/Ø AC
* Actual low AC rating will be dependent upon rectifiers model fitted.
** Rectifier shutdown will occur around 320V, but system must withstand input swells up to at least
400V AC without damage
2.6.5. AC Frequency
50/60 Hz (full range 45 to 65Hz)
2.6.6. DC Output Voltage
40V to 60V DC. The systems are suitable for 48V based rectifiers, with a battery discharge end
voltage of 1.65vpc.
2.6.7. Earthing
The Flexi – 3G system is configured to permit the following earthing arrangements
•
AC & Cabinet connected to the AC Protective Earth
•
DC connected to DC Earth via link from the return busbar to the DC chassis.
This is a positive earthed DC system.
2.6.8. Transient Protection
The power box has two possible rated levels of transient protection:
Tertiary level, provided by the individual rectifier ratings (typically 6kV/3kA 8/20uS).
Optional Secondary level, provided by:-
Four Pole Surge Arrestor
3+1 Circuit with Alarm Contact
IEC Category 2
Arrestor Rated Voltage Vc:275Vac
Nominal voltage Vn:230-415Vac
Nominal Discharge Surge Current In (8/20)µs – 20KA (L-N) (L-PE) (N-PE)
AC Input Configuration
1Ø + N + PE 220/240V AC (9A per Rectifier)
3Ø + N + PE 380/415V AC (27A / Ø)
(Single or three phase selection is field adaptable)
3Ø AC Input (115/230Vac, 50-60Hz, 3Ø + PE) – 3 Wire Delta (27A / Ø)
1Ø + N + PE 220/240V AC (9A per Rectifier)
3Ø + N + PE 380/415V AC (18A / Ø per A&B Feed)
(Separate A & B AC Inputs)
Document No: - 4493-CM-EN-10989402
Copyright © 2008-2009 Eaton Corporation. All Rights Reserved
Flexi -3G Installation & Commissioning Manual
Chapter 2. Flexi - 3G System General Description
Page 17 of 94
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