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DEM021AC |
| THREE
PHASE FOUR WIRE ELECTRONIC DIN-RAIL ACTIVE
ENERGY METER |
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Application |
Model
DEM021AC three phase four wire electronic
DIN rail active energy meter is a kind of
new style three phase four wire active
energy meter, it adopt micro-electronics
technique, and imported large scale
integrate circuit, use advanced
technique of digital and SMT techniques,
etc. The meter completely accord with
relevant technical requirements of class
1 three phase active energy meter stipulated
in international standard IEC 62053-21. It
can accurate and directly measure 50Hz or
60Hz active energy consumption from three
phase four wire AC electricity net. This
meter has seven digits LCD displays shows
the active energy consumption. And there are
far infrared and RS485 communication module
in it. Contact with all kind of AMR system
conveniently It has following features: good
reliability, small volume, light weight,
specious nice appearance, convenient
installation, etc. This meter has already
got the patent certificate from China State
Intellectual Property Office at present.
Patent certificate NO. ZL 2006 3 0107349.1,
any other country patent certificate are in
assessing.
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Functions and
features |
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35mm standard DIN rail installation ,
complying with standard DIN EN50022. Or
front board installed (mounting holes
center distance 63 mm), users can choose any
one by themselves.
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Ten pole width (Modulus 12.5mm), complying
with standard JB/T7121-1993.
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Type S wiring (Inlet from bottom, outlet
from top), use CT connect operation, may
select set 27 ratio, after set the meter
will direct reading when read, and haven¡¯t
multiplied by rate of CT.
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Seven digits display LCD, 5+2 digits display
(99999.91 kWh, only ratio of CT when 5:5 A)
or 7digits, it is choose by ratio
of CT which is set.
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There are a polarity port of pulse output
passive closed and a nonpolarity port of
pulse output passive distant (the output
rate is 10 kWh/pulse), ). Complying with
standard IEC 62053-31 and DIN 43864.
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Standard configuration there are a port of
far infrared data communication and a port
of RS485 data communication.
Communication agreement complying with
standard DL/T645-1997, can also choose
without function of data communication.
(Product Configuration code is NC).
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Six LED instructions respectively every
power supply state, signal of closed energy
impulse and distant energy impulse
and data communication state.
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Automatic detection the direction of the
flow of load current. And Instructions on
individual LCD
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Single direction three components measure
three phase four wire active energy
consumption. It is nothing with
direction of the flow of load current.
Complying with standard IEC 62053-21.
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Standard configuration short terminals
cover, may select extension terminals cover,
in order to protect to use safety.
(Product Configuration code is AF). |
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Technical
parameters |
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Model |
Accuracy |
Reference
voltage (V) |
Current
specifications (A) |
Starting
current (A) |
Insulation
performance |
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DEM021AC |
Class 1 |
3 x 127/220
3 x 230/400 |
CT/ 5A |
0.01 |
AC voltage 4kV for 1 minute,
1.2/50us waveform
impulse voltage 6kV | |
| *If you need
different reference voltage or current
specification, please advisory our sales. |
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Outer and mount
dimension |
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Wiring diagram
(Type S) |
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Terminal |
Note |
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L1 |
L1 phase CT |
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L2 |
L2 phase CT |
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L3 |
L3 phase CT |
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(Inlet from bottom, outlet from top) |
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7 and 8 |
Port of pulse output passive closed |
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3 and 4 |
Port of pulse output passive distant |
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9 |
L1 phase line |
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11 |
L2 phase line |
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13 |
L3 phase line |
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N |
Neutral line |
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5 and 6 |
Port of RS485 data communication |
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1 and 2 |
Port of CT ratio which is set |
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