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8/58 ELECTRICAL INSTALL ATION SOLUTIONS FOR BUILDINGS 2CHC 420 001 C0201

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Energy efficiency
Modular digital instruments

Modular digital instruments
The wide range of modular digital instruments starts with single-phase mono-function
measurement devices for measuring voltage, current.
The range is composed by a voltmeter for a.c./d.c. voltage monitoring, one ammeter for a.c.
current. Ammeters measure in indirect insertion thanks to measuring accessories, like current
transformer for a.c. and shunt for d.c.
The full-scale value is programmable by the user, according to the current flow on the
primary windings.
VLMD

Version Bbn Order details Price Weight Pack
8012542 1 1 piece unit
piece
EAN Type code Order code kg pc.
a.c./d.c. digital voltmeter 620402 VLMD-1-2 2CSM110000R1011 0,300 1
8
a.c. digital ammeter 620501 AMTD-1 2CSM320000R1011 0,300 1
Modular digital instruments with alarm relay
The range is widened by two additional devices with extended features: two ammeters, trip the
internal relay to signal an alarm condition if the measured parameter exceeds or falls below a
programmable threshold. The measured maximum and minimum peak values are stored in the
non-volatile instrument’s memory.
AMTD The contact type is NO, so that the contact is open when the instrument is powered off, but it is
possible to obtain positive safety operation setting, directly on the instrument, the NC relay
contact type.
The instrument with relay can be used to signal the exceeding or the fall below a certain thresh-
old, but not for both functions simultaneously.

Version Bbn Order details Price Weight Pack
8012542 1 1 piece unit
piece
EAN Type code Order code kg pc.
a.c. digital ammeter with alarm relay 747734 AMTD-1-R 2CSM274773R1011 0,300 1
d.c. digital ammeter with alarm relay 610731 AMTD-2-R 0,300 1

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