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DEM021AB |
| THREE
PHASE FOUR WIRE ELECTRONIC DIN-RAIL ACTIVE
ENERGY METER |
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Application |
Model
DEM021AB three phase three wire electronic
DIN rail active energy meter is a kind of
new style three phase three 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 three 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 10kWh/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 NB).
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Five LED instructions respectively every
power supply state (line voltage L12 & L32),
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 two components measure
three phase three 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 AE). |
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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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DEM021AB |
Class 1 |
3 x 220
3 x 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 |
Don't use |
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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 |
Don't use |
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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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