MULTISPAN AVH 14N User Manual page 4

Note:
1) The meter supplied under this terms & condition are
not to be used as a standard meter/Revenue meter
or not for calibration of other meter, unless specified
by Multispan.
2) It is suggested that external CT Should be selected in
such a way that actual load does not fall below 40% of
the Ampere rating of external CT. This will help in
achieving more accurate results of cumulative energy
values over a period of time. For example, external CT
is 100/5 A then accuracy will be good at load more
than 40 Ampere.
3) Above reading are recorded with respect to direct
source and without external CT connection. In field
application accuracy class of externally connected CT
will affect the accuracy of the meter readings.
Mechanical Dimemsions & Installation
B
E
A
A B
MODEL
96mm 96mm 92mm
DIMENSIONS
1) Prepare the panel cutout with proper dimensions as
show above.
2) Fit the unit into the panel with the help of clamp given.
3) The equipment in its installed state must not come in
close proximity to any heating source, caustic vapors, oils
steam, or other unwanted process by products.
4) Use the specified size of crimp terminal (M3.5 screws) to
wire the terminal block.Tightening the screws on the
terminal block using the tightening torque of the range of
1.2 N.m.
5) Do not connect anything to unused terminals.
Safety Precautions
Please read the "Safety Warnings" in the instruction
manual supplied with the instrument thoroughly and
completely for correct use.
Failure to follow the safety rule can cause fire, trouble,
electrical shock, etc.
Therefore, make sure to operate the instrument on a
correct power supply and voltage rating marked on each
instrument.
Read complete instructions prior to installation and
operation of the unit.
F
B
D
C
C D E F
92mm 3mm 52mm 55mm
WARNING : Risk of electric shock.
Warning Guidelines
To prevent the risk of electric shock power supply to the
equipment must be kept OFF while doing the wiring
arrangement. Do not touch the terminals while power
is being supplied.
To reduce electro magnetic interference, use wire with
adequate rating & twists of the same of equal size shall
be made with shortest connection.
Cable used for connection to power source, must have a
cross section of 1mm orgreater. These wires should have
insulations capacity made of at least 1.5kV.
A better anti-noise effect can be expected by using
standard power supply cable for the instrument.
Installation Guidelines
This equipment, being built-in-type, normally becomes a
part of main control panel and in such case the terminals
do not remain accessible to the end user after installation
and internal wiring.
Do not allow pieces of metal, wire clippings, or fine
metallic fillings from installat-ion to enter the product or
G
else it may lead to a safety hazard that may in turn
endanger life or cause electrical shock to the operator.
Circuit breaker or mains switch must be installed between
power source and supply terminal to facilitate power
'ON' or 'OFF' function. However this mains switch or circuit
G
breaker must be installed at convenient place normally
accessible to the operator.
Use and store the instrument within the specified ambient
temperature & humidity ranges as mentioned in this
manual.
Maintenance
The equipment should be cleaned regularly to avoid
blockage of ventilating parts. Clean the equipment with a
clean soft cloth. Do not use isopropyl alcohol or any other
cleaning agent.
Fusible resistor must not be replaced by operator.