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Specifications: Electrical Specification
Symmetra MW 1000 kW 480 V Installation - 990-4112E 31
AC Output
AC Input External Bypass SSW
The External Bypass SSW is designed to accommodate a continuous overload of 25%.
Heat Dissipation
105.5 kBTU/hr (note 10)
Notes
1. Nominal (Nom): Input current based on rated load.
2. Maximum (Max): Input current based on full battery recharge + nominal input voltage + rated
load.
3. Current limitation (A) through electronic current limiting is based on full battery recharge +
nominal load and -15% input voltage (see “Required Breaker Settings” ).
4. Input, Output and Battery1 and Battery2 circuit cables shall be run in separate conduits or
raceways. Cables shall be rated at 600 V as a minimum.
5. Nominal battery voltage at 2.0 volts/cell.
6. Recommendation: All cables shall be sized in accordance with 2002 NEC 210-19 FPN No. 4
branch feeder voltage drop of 3%. Voltage drop not considered in above chart. Application-
specific Input Cable Ampacity may vary from above chart.
7. Equipment Grounding Conductors shall be sized in accordance with Table 250-122 of the 2002
NEC and shall be installed in accordance with Article 250 Section VI and Section VII of the
2002 NEC. Grounding Electrode Conductors shall be sized in accordance with Article 250.66
and Table 250.66 of the 2002 NEC and should be installed in accordance with Article 250
AC Output
Voltage 480 V
Current Nom 1203 A
Max (note 11) 1504 A
Recommended cable (per phase) 5 × 500 kcmil
AC Input External Bypass SSW
External Bypass SSW Max Input Current (100% load) 1203 A