American Power Conversion Symmetra MW - Manual (Page 36)

Specifications: Electrical Specification
32 Symmetra MW 1000 kW 480 V Installation - 990-4112E
Section III of the 2002 NEC.
8. Nominal Battery Discharge current based on rated load, and nominal battery voltage.
9. Maximum Battery Discharge current based on rated load at end of discharge.
10. Heat dissipation calculated at rated load capacity.
11. This current is at 125% of rated load and is electronically current-limited to a maximum of 10
minutes. This value is only provided so the engineer can ensure that the selected AC output
circuit over-current device’s time-current characteristic will support this condition.
a. Temperature rating of conductors: 194
o
F (90
o
C). Reference: Table 310-16 of NEC, 75
o
C
column. Use only copper conductors. 167
o
F (75
o
C) cable terminal connectors assumed.
b. Reference: NEC Handbook 2002. Consult local codes for possible variations.
c. All cable ratings are supplied as guidelines only. These guidelines are recommendations only,
and should not be considered substitutes for review and compliance with NEC, national, or
local codes. Consult with your licensed engineer for site-specific applications. 86
o
F (30
o
C)
assumed. Over-current protection provided by others.
Table 2 - Table 310-16 (National Electrical Code)
National Electrical Code and NEC are registered trademarks of the National Fire Protection
Association, Quincy, MA.
Allowable Ampacities of Insulated Conductors rated 0 Through 2000 Volts, 60
o
C Through to 90
o
C
(140
o
F Through 194
o
F), Not More Than Three Current-Carrying Conductors in Raceway, Cable, or
Earth (Directly Buried), Based on Ambient Temperature of 30
o
C (86
o
F).