Kamstrup ULTRAFLOW 54, Руководство по установке, Страница: 12 / 16

12 Kamstrup A/S • 5512887_B2_GB_09.2015
ULTRAFLOW® 54 · DN150-300
24 VAC
This PCB module is galvanically separated
from the 24 VAC mains supply and is both
suitable for industrial installations with joint 24
VAC supply and individual installations, which
are supplied by a separate 230/24 V safety
transformer in the main electrical panel. The
module includes a double-chamber safety
transformer, which fulils double-isolation
requirements when the cover is mounted on
the electronics box. Power consumption is less
than 1 VA or 1 W.
97
98
24 VAC supply
24 VAC
3.
6 V
65-000-000-8000
Diagram 6
National regulations for electric installations must be observed. The 24 VAC module can be
connected/disconnected by the district heating station’s personnel, where-as the ixed 230/24 V
installation in the main electrical panel must only be carried out by an authorized electrician.
Note: This module cannot be supplied by 24 VDC (direct current).
230/24 V, safety transformer
The 24 VAC module is specially suited for installation together
with a 230/24 V safety transformer, e.g. type 66-99-403, which
can be installed in the main electrical panel before the safety
relay. When the transformer is used the total power consumption
of the meter incl. the 230/24 V transformer will not exceed 1.7 W.
Figure 10
2.2.3 Mains supply cable
ULTRAFLOW® 54 is available with mains cable
H05 VV-F for either 24 V or 230 V (l=1.5 m):
Figure 11. Mains cable (2 x 0.75 mm²), max. 6 A fuse.
”H05 VV-F” is the designation of a strong PVC mantle, which withstands max. 70 °C. Therefore, the
mains cable must be installed with suficient distance to hot pipes etc.
2.2.4 Cable connections
Cable dimension of connections: 4.5…10 mm.
Tightening torque: 4 Nm.
Note:
If ULTRAFLOW® 54 is mounted with a galvanically coupled output module, or if a galvanically
separated output module is used in combination with battery supply the unused cable
connection must be sealed off as shown in Figure 12.