APC 6000 Electrical parameters for determining cable cross-sections, Heat losses

Characteristics (cont.)

Electrical parameters for determining cable cross-sections

◗this table has been drawn up for rated phase-to-phase Mains and load voltages of 415V. For voltages of 380V, multiply the currents for Mains 2 and load by 1.09; for voltages of 400V, use the table in another language version of this manual;

◗the current values and cable cross- sections for Mains 1 are given for full rated load with a power factor of 0.8 and a battery consuming its minimum float charging voltage;

Parameters for single-unit UPS cables

◗the battery current values and cable cross-sections have been determined for a battery at the end of a charge cycle;

◗the current values and cable sections for Mains 2 and load are given for full rated load with a power factor of 0.8.

For frequency converters, the parameters concerning Mains 2 are not applicable.

The load parameters common to all the converters are given in the table below. For a parallel UPS, the parameters for Mains 2 and load are also provided in the table below.

For a modular UPS, the parameters for Mains 2 and load are also provided in the table below.

rated	line currents absorbed in Amps			cross-sectional area of Cu cables in mm2 (2)
inverter	Mains 1	415V	battery	Mains 1		415V		battery
output	with or without	Mains 2		with or without battery		Mains 2 and load
in kVA
	battery (1)	and load		Copper	Aluminium	Copper	Aluminium	Copper	Aluminium
250	407	361	630	185	300	150	240	240	2 x 185
300	490	433	758	240	2 x 150	240	2 x 150	240	2 x 240
400	654	577	1013	2 X 185	2 x 300	2 x 150	2 x 240	2 x 185	3 x 185
450	735	649	1137	2 X 185	2 X 300	2 X 185	2 x 300	2 x 185	2 x 300
500	821	722	1252	2 x 240	4 x 185	2 X 185	2 x 300	3 x 150	3 x 240
600	981	866	1519	3 x 240	4 x 240	2 X 240	4 x 185	3 x 185	2 x 400

(1)the rated Mains 1 currents (In) have been determined for a minimum float charging voltage of 423V and full rated load with a power factor of 0.8.

(2)the cable cross-sections are given for copper conductors. They are calculated according to permissible temperature rise and allow for line voltage drops over a maximum length of 100 m (AC circuits) or 25 m (DC circuits if cables not provided). For greater lengths, the cross-sections should be chosen to limit voltage drops to 3% (AC) or 1% (DC).

NF C 15-100 authorizes a maximum of 4 cables per phase.

Heat losses

rectifier-inverter cubicles

rated	heat
inverter	losses (1)
output
in kVA	in kW	in cal./s
250	13,5	3220
300	17,5	4170
400	23	5480
450	25	5960
500	30	7150
600	32,8	7830

(1)the indicated heat losses are those produced by the unit at full rated load and with the battery float charging. They must be taken into account when dimensioning the air conditioning system. The cubicles are cooled by forced ventilation.

The air enters via the doors and grids at the bottom and is discharged via the roof.

static switch cubicles

rated	heat
SSC	losses (1)
output
in kVA	in kW	in cal./s
500	2,9	696
800	3,7	888
1200	< 0,5	< 120
2000	< 0,5	< 120

(1)the indicated heat losses are those produced by the unit at full rated load when operating on Mains 2. They are not to be taken into account when dimensioning the air conditioning system. The cubicles are cooled by forced ventilation.

"Pack advance" cubicles

rated	heat
inverter	losses (1)
output
in kVA	in kW	in cal./s
300	2,2	525
400	2,6	620
450	2,6	620

(1)the indicated heat losses are those produced by the unit at full rated load and with the battery float charging. They must be taken into account when dimensioning the air conditioning system. The cubicles are cooled by forced ventilation.

The air enters via the doors and grids at the bottom and is discharged via the roof.

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