Specifications for 480 V Systems

Recommended Upstream Protection and Cable Sizes

CAUTION
hazard of fire Connect only to a circuit with the below specifications. Connect only to a circuit provided with maximum a 1600 A branch circuit overcurrent protection 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.

NOTE: All wiring must comply with all applicable national and/or electrical code (National Electrical Code, ANSI/NFPA 70).

Cable sizes in this manual are based on Table 310.15 of the National Electrical Code 2014 (NEC) with the following assertions:

90 °C conductors (THHN) for 75 °C termination
Not more than 3 current carrying conductors in each conduit
An ambient temperature of max. 30 °C
Use of copper or aluminium conductors
100% rated breakers
Nominal operating conditions

If the ambient room temperature is greater than 30 °C, use larger or additional parallel conductors in accordance with the correction factors of the NEC. The maximum allowable conductor size is 600 kcmil.

Equipment Grounding Conductors (EGC) are sized in accordance with NEC Article 250.122 and Table 250.122 “Minimum size equipment conductor for grounding equipment.

NOTE: Always consider the EGC size according to the complete electrical installation.

Recommended Upstream Protection and Cable Sizes for 300 kW UPS

	Maximum OCPD (A)	Conductors per Phase Copper / Aluminium (kcmil)	Equipment Grounding Conductor Copper / Aluminium*
Input	500Long-time setting (I_r) = 1.0*	2x250 / 2x500	2 AWG / 1/0 AWG
Bypass	400Long-time setting (I_r) = 1.0*	1x500 / 2x250	3 AWG / 1/0 AWG
Output	400Long-time setting (I_r) = 1.0*	1x500 / 2x250	3 AWG / 1/0 AWG
Battery	1000*	3x350 / 3x500	2/0 AWG / 4/0 AWG

Recommended Upstream Protection and Cable Sizes for 400 kW UPS

	Maximum OCPD (A)	Conductors per Phase Copper / Aluminium (kcmil)	Equipment Grounding Conductor Copper / Aluminium*
Input	700Long-time setting (I_r) = 1.0*	2x350 / 2x500	1/0 AWG / 3/0 AWG
Bypass	500Long-time setting (I_r) = 1.0*	2x300 / 2x500	2 AWG / 1/0 AWG
Output	500Long-time setting (I_r) = 1.0*	2x300 / 2x500	2 AWG / 1/0 AWG
Battery	1200*	3x600 / 4x500	3/0 / 250

Recommended Upstream Protection and Cable Sizes for 500 kW UPS

	Maximum OCPD (A)	Conductors per Phase Copper / Aluminium (kcmil)	Equipment Grounding Conductor Copper / Aluminium*
Input	800Long-time setting (I_r) = 1.0*	2x600 / 3x400	1/0 AWG / 3/0 AWG
Bypass	700Long-time setting (I_r) = 1.0*	2x350 / 2x500	1/0 AWG / 3/0 AWG
Output	700Long-time setting (I_r) = 1.0*	2x350 / 2x500	1/0 AWG / 3/0 AWG
Battery	1600*	4x500 / 5x500	4/0 AWG / 350 kcmil

Recommended Upstream Protection and Cable Sizes for 625 kW UPS

	Maximum OCPD (A)	Conductors per Phase Copper/Aluminium (kcmil)	Equipment Grounding Conductor Copper/Aluminium*
Input	1000Long-time setting (I_r) = 1.0*	3x400 / 3x600	2/0 AWG / 4/0 AWG
Bypass	800Long-time setting (I_r) = 1.0*	2x600 / 3x400	1/0 AWG / 3/0 AWG
Output	800Long-time setting (I_r) = 1.0*	2x600 / 3x400	1/0 AWG / 3/0 AWG
Battery	2000*	5x500 / 6x600	250 kcmil / 400 kcmil

Recommended Upstream Protection and Cable Sizes for 750 kW UPS

	Maximum OCPD (A)	Conductors per Phase Copper/Aluminium (kcmil)	Equipment Grounding Conductor Copper/Aluminium*
Input	1200Long-time setting (I_r) = 1.0*	3x600 / 4x500	3/0 AWG / 250 kcmil
Bypass	1000Long-time setting (I_r) = 1.0*	3x400 / 3x600	2/0 AWG / 4/0 AWG
Output	1000Long-time setting (I_r) = 1.0*	3x400 / 3x600	2/0 AWG / 4/0 AWG
Battery	2500*	6x500 / 7x600	350 kcmil / 600 kcmil

Recommended Upstream Protection and Cable Sizes for 1000 kW UPS

	Maximum OCPD (A)	Conductors per Phase Copper/Aluminium (kcmil)	Equipment Grounding Conductor Copper/Aluminium*
Input	1600Long-time setting (I_r) = 1.0*	4x600 / –	4/0 AWG / –
Bypass	1600Long-time setting (I_r) = 0.8*	4x400 / –	4/0 AWG / –
Output	1600Long-time setting (I_r) = 0.8*	4x400 / –	4/0 AWG / –
Battery	3000*	8x500 / –	400 kcmil / –

Recommended Bolt and Lug Sizes for Copper Cables

Cable Size	Terminal Bolt Diameter	Cable Lug Type	Crimping Tool	Die
1/0 AWG	M12 x 35 mm	LCCF1/0–12–X	CT930	CD-920–2/0 Black P45
2/0 AWG	M12 x 35 mm	LCCF2/0–12–X	CT930	CD-920–3/0 Orange P50
3/0 AWG	M12 x 35 mm	LCCF3/0–12–X	CT930	CD-920–4/0 Purple P54
250 kcmil	M12 x 35 mm	LCCF250–12–X	CT-940CH/CT-2940	CD-920–300 White P66
300 kcmil	M12 x 35 mm	LCCF300–12–6	CT-940CH/CT-2940	CD-920–350 Red P71
400 kcmil	M12 x 35 mm	LCCF400–12–6	CT-940CH/CT-2940	CD-920–500 Brown P87
500 kcmil	M12 x 35 mm	LCCF500–12–6	CT-940CH/CT-2940	CD-920–500A Pink P99
600 kcmil	M12 x 40 mm	LCCF600–12–6	CT-940CH/CT-2940	CD-920–750 Black P106

Recommended Bolt and Lug Sizes for Aluminium Cables

Cable Size	Terminal Bolt Diameter	Cable Lug Type	Crimping Tool	Die
2/0 AWG	M12 x 40 mm	LAB2/0-12-5	CT930	Olive P54
3/0 AWG	M12 x 40 mm	LAB3/0-12-5	CT930	Ruby P60
250 kcmil	M12 x 40 mm	LAB250-12-5	CT930	Red P71
300 kcmil	M12 x 40 mm	LAB300-12-2	CT930	Blue P76
400 kcmil	M12 x 40 mm	LAB400-12-2	CT930	Green P94
500 kcmil	M12 x 40 mm	LAB500-12-2	CT930	Pink P99
600 kcmil	M12 x 40 mm	LAB600-12-2	CT930	Black P106

Heat Dissipation

Heat Dissipation (BTU/hr) for a 300 kW UPS

Load	Normal Operation	ECO Mode	ECOnversion	Battery Operation
25%	12919	5723	5978	12353
50%	19937	6587	6742	20392
75%	28412	7719	7766	29227
100%	38039	9045	9032	39199

Heat Dissipation (BTU/hr) for a 400 kW UPS

Load	Normal Operation	ECO Mode	ECOnversion	Battery Operation
25%	98409	90496	93271	101770
50%	196084	176797	179590	197789
75%	294126	264155	266255	294870
100%	401035	352206	353243	393465

Heat Dissipation (BTU/hr) for a 500 kW UPS

Load	Normal Operation	ECO Mode	ECOnversion	Battery Operation
25%	18698	6495	7818	18234
50%	31855	7747	7747	31855
75%	50542	10319	10319	53313
100%	69234	13758	13758	78519

Heat Dissipation (BTU/hr) for a 625 kW UPS

Load	Normal Operation	ECO Mode	ECOnversion	Battery Operation
25% load	23373	6475	9772	22793
50% load	38672	9683	10770	39818
75% load	58008	12898	12898	66641
100% load	81934	15033	17198	98149

Heat Dissipation (BTU/hr) for a 750 kW UPS

Load	Normal Operation	ECO Mode	ECOnversion	Battery Operation
25% load	27351	9742	11727	27351
50% load	46407	11620	12924	47782
75% load	73741	15478	15478	79969
100% load	106625	20637	20637	117778

Heat Dissipation (BTU/hr) for a 1000 kW UPS

Load	Normal Operation	ECO Mode	ECOnversion	Battery Operation
25%	36468	12112	15294	36468
50%	61876	15493	16657	63710
75%	95564	20637	20637	106625
100%	145873	27516	27516	157038