Specifications for 480 V Systems - Galaxy VS Manuals UL

Input Specifications 480 V

UPS rating	20 kW	30 kW	40 kW	50 kW
Connections	3-wire (L1, L2, L3, G) WYE or 4-wire (L1, L2, L3, N, G) WYE (single mains) 3-wire (L1, L2, L3, G) WYE (dual mains)*
Input voltage range (V)	408-552
Frequency range (Hz)	40-70
Nominal input current (A)	25	37	50	62
Maximum input current (A)	33	46	61	76
Input current limitation (A)	31	48	63	77
Input power factor	0.99 for load greater than 50% 0.95 for load greater than 25%
Total harmonic distortion (THDI)	<3% at full linear load (symmetrical)
Maximum short circuit rating	65 kA RMS
Protection	Built-in backfeed protection and fuses
Ramp-in	Programmable and adaptive 1-40 seconds

Bypass Specifications 480 V

UPS rating	20 kW	30 kW	40 kW	50 kW
Connections	3-wire (L1, L2, L3, G) WYE or 4-wire (L1, L2, L3, N, G) WYE*
Bypass voltage range (V)	432-528
Frequency range (Hz)	50/60 ± 1, 50/60 ± 3, 50/60 ± 10 (user selectable)
Nominal bypass current (A)	26	38	50	63
Nominal neutral current (A)	42	62	83	104
Maximum short circuit rating	65 kA RMS
Protection	Built-in backfeed protection and fuses Internal fuse specifications: Rated 200 A, prearcing 5.25 kA²s

Output Specifications 480 V

NOTE: The number of output connections must match the number of input wires in a single mains system or bypass wires in a dual mains system.

UPS rating	20 kW	30 kW	40 kW	50 kW
Connections	3-wire (L1, L2, L3, G, GECPer NEC 250.30.*) or 4-wire (L1, L2, L3, N, G)
Output voltage regulation	Symmetrical load ± 1% Asymmetrical load ± 3%
Overload capacity	150% for 1 minute (in normal operation) 125% for 10 minutes (in normal operation) 125% for 1 minute (in battery operation) 125% continuous (bypass operation) 1000% for 100 milliseconds (bypass operation)
Dynamic load response	± 5% after 2 milliseconds ± 1% after 50 milliseconds
Output power factor	1
Nominal output current (A)	24	36	48	60
Frequency regulation (Hz)	50/60 Hz bypass synchronized – 50/60 Hz ± 0.1% free-running
Synchronized slew rate (Hz/sec)	Programmable to 0.25, 0.5, 1, 2, 4, 6
Total harmonic distortion (THDU)	<1% for linear load <5% for non-linear load
Load crest factor	2.5
Load power factor	From 0.7 leading to 0.7 lagging without any derating

Battery Specifications 480 V

DANGER
Hazard of electric shock, explosion, or arc flash Protection of the energy storage device: An overcurrent protective device must be located in close proximity to the energy storage device. Failure to follow these instructions will result in death or serious injury.

All values are based on 40 battery blocks.

UPS rating	20 kW	30 kW	40 kW	50 kW
Charging power in % of output power at 0-40% load	80%
Charging power in % of output power at 100% load	20%
Maximum charging power (at 0-40% load) (kW)	16	24	32	40
Maximum charging power (at 100% load) (kW)	4	6	8	10
Nominal battery voltage (VDC)	480
Nominal float voltage (VDC)	545
Maximum boost voltage (VDC)	571
Temperature compensation (per cell)	-3.3mV/°C, for T ≥ 25 °C – 0mV/°C, for T < 25 °C
End of discharge voltage (full load) (VDC)	384
Battery current at full load and nominal battery voltage (A)	45	66	88	110
Battery current at full load and minimum battery voltage (A)	54	81	108	135
Ripple current	< 5% C20 (5 minute runtime)
Battery test	Manual/automatic (selectable)
Maximum short circuit rating	10 kA

Recommended Cable Sizes 480 V

DANGER
hazard of electric shock, explosion, or arc flash All wiring must comply with all applicable national and/or electrical codes. The maximum allowable cable size is 1/0 AWG. Failure to follow these instructions will result in death or serious injury.

The maximum number of cable connections per busbar: 2 on input/output/bypass busbars; 2 on DC+/DC- busbars; 4 on N busbar; 5 on G busbar.

NOTE: Overcurrent protection is to be provided by others.

Cable sizes in this manual are based on Table 310.15 (B)(16) of the National Electrical Code (NEC) with the following assertions:

90 °C (194 °F) conductors (75 °C (167 °F) termination)
An ambient temperature of 30 °C (86 °F)
Use of copper conductors

If the ambient temperature is greater than 30 °C (86 °F), larger conductors are to be selected in accordance with the correction factors of the NEC.

Equipment grounding conductors (EGC) are sized in accordance with NEC Article 250.122 and Table 250.122.

NOTE: Recommended cable sizes and maximum allowable cable size may vary for the auxiliary products. Not all auxiliary products support aluminum cables. Refer to the installation manual provided with the auxiliary product.

NOTE: The DC cable sizes given here are recommendations – Always follow the specific instructions in the battery solution documentation for DC cable sizes and DC EGC cable sizes and ensure that the DC cable sizes match the battery breaker rating.

NOTE: Neutral conductor is sized to handle 1.73 times phase current in case of high harmonic content from non-linear loads. If non or less harmonic currents are expected, neutral conductor can be sized accordingly but not less than the phase conductor.

Copper

UPS rating	20 kW	30 kW	40 kW	50 kW
Input phases (AWG/kcmil)	8	6	4	3
Input EGC (AWG/kcmil)	10	8	8	6
Bypass/output phases (AWG/kcmil)	10	8	6	4
Bypass EGC/output EGC (AWG/kcmil)	10	8	8	8
Neutral (AWG/kcmil)	6	4	2	1/0
DC+/DC-(AWG/kcmil)*	6	4	2	1/0
DC EGC (AWG/kcmil)	8	6	6	6

NOTE: Cable sizes are based on 80% rated circuit breakers for UIB, UOB, MBB, SSIB, and 100% rated circuit breaker for battery breaker(s).

Recommended Upstream Protection 480 V

DANGER
Hazard of electric shock, explosion, or arc flash For parallel systems, instantaneous override (Ii) values must not be set higher than 800 A. Place the label 885-92557 adjacent to the upstream circuit breaker to inform about the hazard. Failure to follow these instructions will result in death or serious injury.

CAUTION
hazard of fire Connect only to a circuit with the below specifications. Connect to a circuit provided with a 125 A branch circuit overcurrent protection maximum in accordance with the National Electrical Code, ANSI/NFPA70, and the Canadian Electrical Code, Part I, C22.1. Failure to follow these instructions can result in injury or equipment damage.

NOTE: Overcurrent protection is to be provided by others and marked with its function.

UPS rating	20 kW		30 kW		40 kW		50 kW
	Input	Bypass	Input	Bypass	Input	Bypass	Input	Bypass
Breaker type	HJF36100U31X
Ir (A)	40	35	60	50	80	70	100	80
tr @ 6 Ir	0.5
li (x In)	1.5

Recommended Bolt and Lug Sizes for UL

NOTICE
risk of equipment damage Use only UL approved compression cable lugs. Failure to follow these instructions can result in equipment damage.

Copper

Cable size	Bolt size	Cable lug type	Crimping tool	Die
10 AWG	M6 x 20 mm	LCA10-14-L	CT-1570	NA
8 AWG	M6 x 20 mm	LCA8-14-L	CT-720	CD-720-1 Red P21
6 AWG	M6 x 20 mm	LCA6-14-L	CT-720	CD-720-1 Blue P24
4 AWG	M6 x 20 mm	LCA4-14-L	CT-720	CD-720-1 Gray P29
3 AWG	M6 x 20 mm	LCA4-14-L	CT-720	CD-720-1 Gray P29
2 AWG	M6 x 20 mm	LCA4-14-L	CT-720	CD-720-1 Brown P33
1 AWG	M6 x 20 mm	LCA1-14-E	CT-720	CD-720-2 Green P37
1/0 AWG	M6 x 20 mm	LCA1/0-14-X	CT-720	CD-720-2 Pink P42
2/0 AWG	M6 x 20 mm	LCA2/0-14-X	CT-720	CD-720-2 Black P45
3/0 AWG	M6 x 20 mm	LCA3/0-14-X	CT-720	CD-720-2 Orange P50
4/0 AWG	M6 x 20 mm	LCA4/0-14-X	CT-720	CD-720-3 Purple P54