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Specifications, Bottom cable entry, Bypass static switch wiring – American Power Conversion Symmetra MW User Manual

Page 4: Low-impedance/high-impedance grounding, Electrical specification, Required breaker settings, General specifications 480 v

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Symmetra MW 1000 kW 480 V Installation - 990-4112E

Bottom Cable Entry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Preparing for bottom cable entry

. . . . . . . . . . . . . . . . . . . . 13

Battery cable connections (bottom cable entry)

. . . . . . . . . . 15

Ground and AC cable connections (bottom cable entry)

. . . . 17

Bypass Static Switch Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

Top cable entry

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Bottom cable entry

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

Communication cable overview . . . . . . . . . . . . . . . . . . . . . . . . 21

Relay Board (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Location of optional Relay Board

. . . . . . . . . . . . . . . . . . . . 22

Communication cables with optional Relay Board

. . . . . . . . 23

Relay Board functions

. . . . . . . . . . . . . . . . . . . . . . . . . . . 24

Specifications ........................................................ 27

Low-Impedance/High-Impedance Grounding . . . . . . . . . . . . . . 27

Low-impedance grounding

. . . . . . . . . . . . . . . . . . . . . . . . 27

High-impedance grounding

. . . . . . . . . . . . . . . . . . . . . . . 27

Electrical Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

Installation Planning Data

. . . . . . . . . . . . . . . . . . . . . . . . 29

AC Input

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

DC Input

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

AC Output

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

AC Input External Bypass SSW

. . . . . . . . . . . . . . . . . . . . . 31

Heat Dissipation

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Notes

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Table 2 - Table 310-16 (National Electrical Code)

. . . . . . . . . 32

Recommended cable, bolt, and lug sizes

. . . . . . . . . . . . . . . 34

Torque specifications

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

Required Breaker Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

Input and upstream breakers — minimum settings

. . . . . . . . 35

Output and downstream breakers — minimum settings

. . . . 35

General Specifications 480 V . . . . . . . . . . . . . . . . . . . . . . . . . . 37