TECHNICAL DESCRIPTION
MULTICAL
®
41
5512-313 GB/01.2010/Rev. C1
27
9.2
Supply module 230 VAC
This print module is galvanically separated from the mains supply and is suitable for direct mains installation.
The module includes a double-chamber safety transformer that fulfils the requirements of double-insulation. The
power consumption is less than 1 VA/1 W.
Figur 14
National installation requirements must be met. The 230 VAC module must only be connected by authorised
personnel. In Denmark ”Elråd nr. 5/98” or later edition must be followed. Max. fuse 6 A.
Changes from battery to mains supply require a re-programming, as info code 128 would otherwise still be active
for the mains supplied meters.
9.3
Supply Module 24 VAC
The water meter is available with a print module which reduces the input voltage to approx. 3.6 VDC. The module
has a built-in transient protection, but includes no galvanic separation between input and output voltages. The
module is especially suited for installation together with a galvanically separated transformer, e.g. type 66-99-
403
that can be installed in the switch cabinet. When the transformer is used, the power consumption will be less
than 4 VA/1.5 W for the entire meter.
Figur 15
Changes from battery to mains supply require a re-programming, as info code 128 would otherwise still be active
for the mains supplied meters.
9.4
Exchanging the supply unit
The supply unit for MULTICAL
®
41 can be exchanged from mains supply to battery or vice versa as the needs of
the utility company change. Thus, mains supplied meters can be exchanged into battery meters with advantage in
connection with buildings under construction, as mains supply may be unstable or may even lack in periods.
In connection with an exchange it is, however, important to note that info code 128 (
Battery must be exchanged.
The code is set 12 years after resetting the hour counter) is only active at type number
66-Zx-
2
x-xxx.