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31Symmetra MW II 1200 kW 3 × 400/230 V Installation - 990-1979E-001
Mains - input
UPS - output
PE
N
PE
PE
PE
Bypass - input Bypass - output
L1
L3
L2
L1
L3
L2
N
L1
L3
L2
L1
L3
L2
Main Protective Earthing Terminal
External SSW-Bypass
Symmetra MW
( PDU )
Service Entrance
Main
inverter
u
u
u
M
Main Protective Earthing Terminal
PEN
PE
Q1
Q6
Q3
Q5
Earthing arrangements and protective conductors - Symmetra MW in TN-C installation
E
Suitable earth electrode
with reference to IEC 60364-5-55 § 551.4.2
With reference to:
IEC 60364-4-41 § 413.1.3.1
+- +-
Battery 1
Battery 2
Q7 Q8
Battery 1 Battery 2
PE
PE
Battery
rack
Battery
breaker
box
Q4
Delta
Inverter
i
i
i
Common-mode filter
Switchgear
N
PEN
PEN PEN
PEN
The "Common-Mode Filter" has no effect in this
system configuration.
This system configuration is not recommended
See: IEC 60364-4-41 § 413.1.3