Specifications

Specifications for 20 kW UPS with Input Isolation Transformer and Internal Batteries

The UPS includes an input isolation transformer of 480 V In, 400 V Out. The UPS is designed for a continuous 20 kW load (transformer sized at 20 kW) and supports short-term peak loads up to 80 kW. The UPS protects medical equipment (e.g. X-ray, scanners) or other load equipment with similar short-time peak consumption.

Input 480 V	Connections	3-wire (L1, L2, L3, G)
	Input voltage range (V)	432-528
	Frequency (Hz)	60
	Nominal input current (A)	29
	Maximum input current (A)	34
	Input current limitation (A)	80
	Total harmonic distortion (THDI)	<6% at 100% load
	Input power factor	0.99 at 100% load
	Protection	Built-in backfeed protection and fuses
	Maximum short circuit rating	20 kA RMS
	Ramp-in	Programmable and adaptive 1-40 seconds
Output 400 V	Connections	4-wire (L1, L2, L3, N, G)
	Output voltage regulation	Symmetrical load ±1% Asymmetrical load ±3%
	Overload capacity	20 kW load: continuous in normal operation and battery operation NOTE: Overload capacities above 20 kW are given with load switching between 100 milliseconds ON and 200 milliseconds OFF. 30 kW load: 120 minutes in normal operation 40 kW load: 60 minutes in normal operation 50 kW load: 45 minutes in normal operation 60 kW load: 30 minutes in normal operation 70 kW load: 20 minutes in normal operation 80 kW load: 5 minutes in normal operation
	Dynamic load response	± 5%
	Output power factor	1
	Nominal output current (A)	29
	Output frequency (Hz)	60 Hz bypass synchronized – 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	0.7 leading to 0.7 lagging
Battery 400 V	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
	Maximum charging power (at 100% load) (kW)	4
	Nominal battery voltage (VDC)	480
	Nominal float voltage (VDC)	545
	Maximum boost voltage (VDC)	572
	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)	43
	Battery current at full load and minimum battery voltage (A)	54
	Ripple current	< 5% C20 (5-minute runtime)
	Battery test	Manual/automatic (selectable)
	Maximum short circuit rating	10 kA

Recommended Cable Sizes

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 2 AWG. Failure to follow these instructions will result in death or serious injury.

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
Installation method C

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 are sized in accordance with NEC Article 250.122 and Table 250.122.

Input/output phases	2 AWG
Input/output EGC	2 AWG
Neutral	2 AWG

Recommended Bolt and Lug Sizes

Cable size	Bolt size	Cable lug type	Crimping tool	Die
2 AWG	M8 x 25	LCA2-56-Q	CT-720	CD-720-1 Brown P33

Recommended Upstream Protection

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.

UPS rating	20 kW
Breaker type	HDL36125

Torque Specifications

Bolt size	Torque
M4	1.7 Nm (1.25 lb-ft / 15 lb-in)
M5	2.2 Nm (1.62 lb-ft / 19.5 lb-in)
M6	5 Nm (3.69 lb-ft / 44.3 lb-in)
M8	17.5 Nm (12.91 lb-ft / 154.9 lb-in)
M10	30 Nm (22 lb-ft / 194.7 lb-in)
M12	50 Nm (36.87 lb-ft / 442.5 lb-in)

Environment

	Operating	Storage
Temperature	0 °C to 40 °C (32 °F to 104 °F)	-15 °C to 40 °C (5 °F to 104 °F) for systems with batteries.
Relative humidity	0 - 95% non-condensing	10 - 80% non-condensing
Elevation	Designed for operation in 0-3000 m (0-10000 feet) elevation. Power derating required from 1000-3000 m (3300-10000 feet): Up to 1000 m (3300 feet): 1.000 Up to 1500 m (5000 feet): 0.975 Up to 2000 m (6600 feet): 0.950 Up to 2500 m (8300 feet): 0.925 Up to 3000 m (10000 feet): 0.900
Audible noise one meter (three feet) from unit	57 dB at 70% load, 65 dB at 100% load
Protection class	IP20
Color	RAL 9003, gloss level 85%

Heat Dissipation in BTU/hr

20 kW	Normal operation	Battery operation
25% load	<3000	1405
50% load	<3000	1836
75% load	<3000	2267
100% load	<3000	2697

UPS Shipping Weights and Dimensions

UPS rating	Weight kg (lbs)	Height mm (in)	Width mm (in)	Depth mm (in)
20 kW UPS with input isolation transformer and three battery strings	902 (1989)	2082 (81.96)	755 (29.72)	1010 (39.76)

Modular Battery Shipping Weights and Dimensions

Commercial reference	Weight kg (lbs)	Height mm (in)	Width mm (in)	Depth mm (in)
GVSBTHULL	33 (73)	180 (7.08)	150 (5.90)	800 (31.49)

UPS Weights and Dimensions

UPS rating	Weight kg (lbs)	Height mm (in)	Width mm (in)	Depth mm (in)
20 kW UPS with input isolation transformer and three battery strings	877 (1933)	1970 (77.56)	550 (21.65)	847 (33.35)

NOTE: One battery module weighs approximately 32 kg (70.5 lbs).

Clearance

Required Ventilation Clearance	Recommended Installation and Service Clearance
NOTE: These clearance dimensions are published for airflow only. Consult with the local safety codes and standards for additional requirements in your local area.	NOTE: These clearance dimensions are published for installation and service access only. Consult with the local safety codes and standards for additional requirements in your local area.