ABL eMS home, Руководство пользователя

Страница: 11 / 60

System installation –
Electrical connection of the eMS home for direct measurement without current transformer |
11
Electrical connection of the eMS home for direct measurement without current
transformer
When connecting directly to the eMS home, it must be ensured, by fitting a fuse, for example, that the maximum per-
mitted current per phase is not exceeded.
Proceed as follows:
1
Mount the eMS home on a top-hat rail.
y
Hook the eMS home onto the top edge of the
top-hat rail and press it until it clicks into place.
L1
L1 L2 L3
L1 L2 L3 N
L2 L3
L1 L2 L3 N
L1 L2 L3
L1 L2 L3 N
eMS home
STATUS
NETWORK
SERIAL BUS
RESET
LAN LAN
Consumer
eMS home as
a grid supply and
grid feed-in meter
Circuit breaker
Electricity sup-
ply company’s
energy meter
Meter fuse
3 × 63 A
Public electricity network 230/400 V
IN
OUT
Example for implementation
2
Connect the conductors to the eMS home.
y
Pay attention to the permissible connection
cross section and the tightening torque for the
screw terminal (see “Technical specifications”
on page 48).
y
For a three phase power network, connect the
outer conductors
L1
,
L2
and
L3
and the neutral
conductor
N
to the eMS home as shown in the
connection diagram.
y
For a single phase power network, connect the
outer conductor L1 and neutral conductor N to the
eMS home as shown in the connection diagram.
Designation Explanation
L1, L2, L3 Outer conductor
N Neutral
OUT Meter output, consumer side
IN Meter input, mains side
WARNING!
Use of a meter fuse or circuit breaker
The end user must be able to isolate the eMS home from the power supply by means of a freely accessible meter
fuse or an additional circuit-breaker.
WARNING!
Note on the correct assignment of the phases
Make sure that the phases are each assigned correctly. Otherwise, the eMS home will provide incorrect meas-
ured values.