Měřící Energetické Aparáty
6
3/ Explanation of syMbols in UsEr ManUal
for powEr sUpply MEg101.4
Danger, electric shock risk
Note in documentation / Danger, risk of danger
Ground, grounding terminal for RF grounding
IP kód
Degree of protection provided by enclosure
The product is intended for recycling and collection spots
Declaration of Conformity – European Community
4/ ConstrUCtion
The uninterruptible power Supply MEg101.4 is built in a plastic case made of self-extin-
guishing polycarbonate. The power supply is installed on the DIN rail TS 35 using upper
or lower spring latches. The power supply can be located in the case together with the
external accumulator.
Global configuration of the MEg101.4 power supply is on Fig. 1. The LED indicator
RUN
is on the unit's panel, indicating the presence of 12 V
DC
voltage on the output of the units on
terminals with label
OUTPUT
. The group of terminals
POWER
with AC or DC supply
voltage and the group of
OUTPUT
terminals with 12 V
DC
output voltage and blocking
are located on the lower part of the unit and their denotation and explanation are given
in Tab. 1. The group of
AKU
terminals is designed for possible connection of an external
accumulator and it is found on the upper part of the unit. Maximum cross-section of the
connected wire is 4 mm
2
. The replaceable input fuse
FU1
is in socket under the screwed
cover next to the input supply
POWER
voltage terminals. Both replaceable fuses
FU2
and
FU3
in the external accumulator circuit are found under the cover located next to the group
of
AKU
terminals. The rated voltage of the external gel gas-tight lead-acid accumulator is
12 V
DC
and the accumulator can have the capacity up to 24 Ah. Without the external accu-
mulator, the supercapacitors used in the uninterruptible power supply provide power with
the voltage drop from 12 V to 10 V for 3 sec at 15 W load.
