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DEM321MF |
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PHASE FOUR WIRE ELECTRONIC FRONT BOARD
INSTALLED ACTIVE ENERGY METER |
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Application |
Model
DEM321MF three phase four wire electronic
front board installed 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 accurately and directly measure 50Hz or
60Hz active energy consumption from three
phase four wire AC electricity net, it is
use for setting indoor or out door, and this
meter has seven digits LCD displays shows
the active energy consumption. And there is
a maintenance-free lithium batteries in it,
use for showing blackout reading. It has
following features: Good reliability, small
volume, light weight, specious nice
appearance, convenient installation, etc.
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Functions and
features |
●
Front board three fixed installation, up and
down mounting holes center distance is
198-212 mm, users can choose any one by
themselves.
● Seven digits
display LCD, standard configuration 6+1
digits display (999999.1kWh,). May select
5+2 digits display (Please specified
when ordering).
● There is a
maintenance-free lithium batteries in it,
use for showing blackout reading.
● There are a
polarity port of pulse output passive closed
and a nonpolarity port of pulse output
passive distant (the output rate is 10 or
100 imp/kWh, can select).
And contact with all kind of AMR system
conveniently,
Complying with standard IEC 62053-31 and DIN
43864.
● Five LED
instructions respectively power supply state
and signal of closed energy impulse and
distant energy impulse
● Automatic
detection the direction of the flow of load
current. And Instructions by individual LED.
● 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.
● Standard
configuration direct connect operation ,
type 16B wiring, we can also choose another
type of wiring, and use CT (Product
Configuration code is LF)
and PT & CT (Product Configuration code is
KF) for operation, it is type 5B wiring.
● Standard
configuration extension terminals cover, in
order to protect to use safety, may select
short terminals cover. (Product
Configuration code is
MC).. |
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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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DEM321MF |
Class 1 |
3 X 127 / 220
3 X 230 / 400 |
5(30)
10(60)
20(100) |
0.02
0.04
0.08 |
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 16B) |
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Terminal |
Note |
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1 |
Inlet L1 phase |
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3 |
Outgoing L1 phase |
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4 |
Inlet L2 phase |
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6 |
Outgoing L2 phase |
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7 |
Inlet L3 phase |
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9 |
Outgoing L3 phase |
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10 |
Inlet neutral line |
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11 |
Outgoing neutral line |
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18 and 19 |
Port of pulse output passive distant |
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20 and 21 |
Port of pulse output passive closed |
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