16
Arrangement of excess export system when con-
nected into a sub-distribution board
RCD
RCD
M
400V / 230V~
N
L
K
H
kWh
Z2
1~
B
C
F
G
E
~
P
O
kWh
Z1
kWh
A
D
S1
Fig. 4
A
Vitovalor PA2
B
Fuel cell module ON/OFF switch
C
Control unit ON/OFF switch
D
Control unit
E
Internal circulation pump
F
Internal consumers
G
GS protection
H
Sub-distribution board
K
On-site consumers
L
Meter cupboard
M
Property boundary
N
Low voltage grid
O
Inverter (DC/AC converter) S
EMAX
= 0.75 kVA
P
Fuel cell stack
S1 Bidirectional energy management meter (not rele-
vant for billing by the grid operator)
Z1 Balancing bidirectional meter
Z2 Export meter (standard delivery on Vitovalor PA2)
Arrangement of excess export system when con-
nected into a mains low voltage (LV) distribution
board
RCD
RCD
kWh
Z1
L
AC 400V / 230V~
M
K
H
kWh
Z2
1~
F
G
E
kWh
S1
~
O
N
B
C
A
D
Fig. 5
A
Vitovalor PA2
B
Fuel cell module ON/OFF switch
C
Control unit ON/OFF switch
D
Control unit
E
Internal circulation pump
F
Internal consumers
G
GS protection
H
Meter cupboard
K
On-site consumers
L
Property boundary
M
Low voltage grid
N
Inverter (DC/AC converter) S
EMAX
= 0.75 kVA
O
Fuel cell stack
S1 Bidirectional energy management meter (not rele-
vant for billing by the grid operator)
Z1 Balancing bidirectional meter
Z2 Export meter (standard delivery on Vitovalor PA2)
Preparing for installation
Notes on connecting to the mains supply
(cont.)
5839343
Installation
Содержание E00T
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