Download Print this page

Appendix D - Internal Xfmr Unit Input/Output Cabling Guide; D.1 - Ups Power Lug Cable Capacity And Torque Specifications; D.2 - Input Cable Size For 3-Phase/4-Wire + G - Toshiba 4400 Series Installation And Operation Manual

Three phase - 15/20/25/30/50/80/100 kva
Hide thumbs

Advertisement

Appendix D – Internal XFMR Unit Input/Output Cabling Guide
The 4400 Series UPS can be configured with a variety of Input and Output voltage transformers to accommodate different Input/Output voltage combinations.
The following tables and text assist with sizing cable for units with non-native input and output voltages.
Table D.1 – UPS Power Lug Cable Capacity and Torque Specifications
Recommended Minimum Input Cable Size for 3-Phase/4-Wire + G
Table D.2 –
Recommended Minimum Output/Bypass Cable Size for 3-Phase/4-Wire + G
Table D.3 –
Table D.4 – Recommended Minimum Cable Size for 3-Phase/3-Wire + G
Table D.5 – Recommended Minimum Cable Size for 3-Phase/3-Wire + G
Table D.6 – Recommended Battery Cabling
Table D.7 – Input Transformer Current for Given Input Voltage
Table D.8 – Output Transformer Current for Given Output Voltage
Tables D.2 and D.3 list the recommended Power Cable sizing for each of the UPS – Vin/Vout transformers. Ampacity should be determined using Table
310.15(B)(16) of the NEC (National Electrical Code) for 75° copper conductors.
NOTES:
3-Phase/4-Wire cable sizing calculations based on 4-6 current carrying conductors per conduit. (NEC Table
310.15(B)(2)(a))
Neutral cable sizing in Table D.2 and D.3 is based on allowing, when possible, 1.7 x I(line) for current carrying Neutral.
Otherwise, the maximum cable size allowed by the UPS power lug is specified.
80 kVA
For ease of installation, consider the alternative of substituting two (2) line-sized neutral cables in place of a
single larger neutral cable in 3-Phase, 4-Wire 80kVA installations
D.1 – UPS Power Lug Cable Capacity and Torque Specifications
TABLE D.1 – UPS POWER LUG CABLE CAPACITY AND TORQUE SPECIFICATIONS
15-30kVA
50kVA
80kVA
D.2 – Input Cable Size for 3-Phase/4-Wire + G
TABLE D.2 – RECOMMENDED INPUT CABLE SIZE FOR 3-PHASE/4-WIRE + G
Vin, Vout, Vbyp
3P/4W+G
208/120V (no
Phase
Xfmr)
Neutral
220/127V
Phase
Neutral
230/133V
Phase
Neutral
240/139V
Phase
Neutral
380/220V
Phase
Neutral
4400 Series Installation and Operation Manual – 64527-008
UPS
POWER LUG CABLE CAPACITY
(1) x #12 to #2
(1) x #6 to 250 kcmil
(2) x 1/0 to 600 kcmil
15kVA
20kVA
(AWG)
(AWG)
#4
#2
#4
#2
#6
#3
#6
#2
#8
#4
25kVA
(AWG)
#3
#2
#2
#2
#3
#2
#2
#2
#4
#3
#2
#2
#4
#3
#2
#2
#6
#6
#3
#2
TORQUE
87 in-lb (9.8 N∙m)
275 in-lb (31 N∙m)
375 in-lb (42 N∙m)
1
30kVA
50kVA
(AWG)
(AWG)
#2
4/0
#2
250 kcmil
#2
4/0
#2
250 kcmil
#2
3/0
#2
250 kcmil
#2
4/0
#2
250 kcmil
#4
#1
1/0
4/0
80kVA
(AWG)
500 kcmil
2 x 500 kcmil
500 kcmil
2 x 350 kcmil
500 kcmil
2 x 300 kcmil
400 kcmil
2 x 300 kcmil
3/0
500 kcmil
121

Advertisement

loading

  Related Manuals for Toshiba 4400 Series

  Related Content for Toshiba 4400 Series