Connection For Excess Export Without Power Storage System - Viessmann Vitovalor PT2 Installation And Service Instructions For Contractors

Notes on connecting to the mains supply

Connection for excess export without power storage system

On-site energy consumption to paragraphs 33 and 4(3)
of the German CHP Act (KWKG)
A
B
C
E
F
kWh
Z1
kWh
S1
kWh
Z4
H
Fig. 11
Low voltage grid
A
Main power supply
B
Domestic distribution box
C
D Property boundary
Grid operator
E
Customer
F
Power distribution
G
On-site consumers
H
Short circuit protection
K
Overload protection, RCD
L
M Vitovalor PT2
400V / 230V~
D
kWh
Z2
G
K
L
1~/N/PE
M
kWh
Z3
N
~ ~
O
P
(cont.)
G
K
L
1~/N/PE
R
S
T
GS protection
N
Inverter (DC/AC converter) S
O
Fuel cell
P
GS protection for PV system
R
PV inverter
S
Photovoltaic system
T
S1 Bidirectional energy management meter (optional,
not relevant to billing by the grid operator)
Z1 Balancing bidirectional meter (observe meter cir-
cuit)
Electricity meter for power export and drawing
Preparing for installation
= 0.75 kVA
EMAX
21