Kamstrup MULTICAL 602, Technical Description, Page: 84 / 130

MULTICAL® 602
84 Kamstrup A/S ∙ Technical Description ∙ 5512 ‐ 931_N1_GB_11.2016
The module is especially suited for installation together with a 230/24 V safety transformer, e.g. type 6699-403,
that can be installed in the switch cabinet before the safety relay. When the transformer is used the power
consumption will be less than 2.2 W for the entire meter including the 230/24 V transformer. If mains disappears,
this power supply will keep the meter running for a few minutes.
Maximum cable length between 230/24 VAC transformer e.g. Kamstrup type 6699-403 and MULTICAL
®
.
9.6.1 Requirements for the transformer 230/24 V
Transformer type 6699-403 is recommended for connection to a 24 VAC high-power supply module. Other types
may be used, however it ought to be secured that the transformer has the correct output voltage. This is the case if
the transformer has an off-load voltage of

26 VAC and a voltage of

20 VAC loaded at 100 Ohm (or at two times
47 Ohm connected in series).
Unloaded:

26 VAC
Loaded:

20 VAC
Figure 11
Cable type Maximum length
2 x 0.75 m 50 m
2 x 1.5 mm
2
100 m