APC MW II manual Legal in DK specialcases

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

Earthing arrangements and protective conductors - Symmetra MW in "TNSinstallation"-

( Legal in DK - specialcases )

See:

IEC 60364-4-41 § 413.1.4 and "Stærkstrømsbekendtgørelsen"

§ 551.6.3, Note

Switchgear

Service Entrance

Q3

( PDU )

Residual current protective

Residual Current Sense

device can be used.

Q5

External SSW-Bypass

Q6

Bypass - input

Bypass - output

L1

L1

L2

L2

L3

L3

Main Protective Earthing Terminal

PE

PE

Q4

Residual current protective device can not be

PE

used at this point.

Owing to parallel return path for the fault current

Sense

SymmetraMW

Q1

i

Inverter

UPS - output

Current

Mains - input

Delta

L2

L2

L1

i

L1

Residual

EarthingProtectiveConductor

mode-Commonfilter

i

u

L3

L3

u

u

M

Main

inverter

N

N

N

PE

E

Protective Earthing Conductor

Main Protective Earthing Terminal

PE

PE

+

-

+

-

Battery 1

Battery 2

With reference to:

Legal in DK ( Special cases )

Battery

IEC 60364-4-41 § 413.1.3.1

With reference to:

breaker

box Q7

Q8

Minimum cross-sectional areas:

Stærkstrømsbekendtgørelsen

§ 551.6.3 Note

IEC 364-5-54 § 543.1.1

( § 551.6.3 is missing in IEC 60364-5-55 )

PE

Battery

rack

Battery 1

Battery 2

PE

29