Symmetra MW II 1200 kW 3 × 400/230 V Installation - 990-1979E-001

Earthing arrangements and protective conductors - Symmetra MW inCTNinstallation-

See: IEC 60364-4-41 § 413.1.3

This system configuration is not recommended

Switchgear

 

 

 

 

 

 

 

Service Entrance

 

 

 

 

 

Q3

 

 

 

 

 

 

 

 

Q5

 

 

 

External SSW-Bypass

 

Bypass - input

 

 

 

 

Bypass - output

Q6

 

 

 

 

 

 

L1

 

 

 

 

L1

 

 

L2

 

 

 

 

L2

 

 

L3

 

 

 

 

L3

 

 

Main Protective Earthing Terminal

 

 

 

 

PE

 

 

 

 

PE

Q4

 

 

 

 

 

 

 

 

 

 

 

 

SymmetraMW

 

Q1

Mains - input

 

i

Delta

 

UPS - output

 

 

 

 

Inverter

 

 

 

 

L1

 

 

i

 

L1

 

 

 

 

 

 

 

 

 

L2

 

i

 

 

L2

 

 

 

 

 

 

 

 

 

L3

 

 

 

 

L3

 

 

 

 

 

 

u

u

 

 

filter

 

 

 

 

M

 

 

Common-mode

 

 

 

 

 

 

 

 

 

 

u

 

 

 

 

 

 

 

Main

 

 

 

 

 

 

 

inverter

 

 

N

 

 

 

 

N

 

PEN

E

 

 

 

 

 

 

PEN

 

 

 

 

 

 

 

PEN

 

 

 

Main Protective Earthing Terminal

PEN

 

PE

 

 

 

 

PE

 

 

+

-

+

-

 

 

 

 

1

 

 

2

 

 

 

 

Battery

 

 

Battery

 

The "Common-Mode Filter" has no effect in this

 

 

 

 

 

 

 

system configuration.

 

With reference to:

 

 

 

IEC 60364-4-41 § 413.1.3.1

Suitable earth electrode

Battery

 

 

with reference to IEC 60364-5-55 § 551.4.2

 

 

 

breaker

 

 

 

box Q7

Q8

 

 

PE

 

 

 

Battery

 

 

 

rack

 

 

 

Battery 1

Battery 2

 

 

PE

 

( PDU )

N

PEN

PE

31

Page 35
Image 35
APC MW II manual Switchgear Service Entrance