American Power Conversion SYMF800KH - Manual (Page 52)

Residual Current Sense
Mains - inpu
t
UPS - outpu
t
PE N PE
PE PE
Bypass - in
p u t
Bypass - outp
u t
L1 L3 L2
L1 L3 L2 N
L1 L3 L2
L1 L3 L2
( Alternative to earth e
lectrode )
Earthing Conducto r
Main Protective Earthing Termin
a l
External SSW-Bypa
s
s
Symmetra M
W
( PDU )
Service Entran
c
e
Ma
in
invert
e r
u
u
u
M
Main Protective Earthing Termin
a l
N
PE
Q1
Q6
Q3
Q5
Earthing arrangements and protective conductors - Symmetra MW in "IT
-
installation"
E
Residual current protec
tive device
can be u
se
d
.
+-
+
-
Battery 1
Battery 2
Q7
Q8
Battery
1
Battery
2
PE PE Batte
ry
rack Batte
ry
break
e
r
box
Q4
Delta Inve
rt e r
i
i
i
Common-mode filter
Switchge
a
r
See: IEC 60364-4-41
§
413.1.5
Protective Earthing Condu
ctor
Insulati
o n
Monitorin
g
Devi
c e
Requirement !
!
IEC 60664-4-41 §
413.1.5.4
Suitable earth elect
ro
d e : R
A
x I
d < 5
0 V
With reference to IEC 60364-4-41
§
413.1.5.3
Alternat
ive:
The exposed-conductive-parts can be earthed indivi
dually or in groups.
But
special demands are required. See IEC 60364-
4-41 § 413.1.5.5 a)
Z
Z
Grou
nding
impe
dance
Grou
nding
impe
dance