COMBIMETER
DM-800 (True RMS 8in1Digital Meter) |
|
DESCRIPTION |
|
The
meter incorporates micro-controller system, which samples voltage and
current signals and computes Voltage, Current, Frequency, Active Power
, Reactive Power , Apparent Power & Active Energy. Power Factor is
computed by power division method. These parameters are displayed on Four
Digit, Seven Segment, LED display. With MODE push button respective phases
(L1, L2, L3) & System (Σ) are selected. The Active Energy i.e.
kWh is displayed on another Four Digit, Seven Segment, LED display (Ref.
features).
|
|
A
single DM800 meter can replace 12 meters viz. 3 Ammeters, 3 Voltmeters,
1 Frequency meter & 1 Three phase meters consisting of kW, kvar, kVA
, kWh & PF. Thus saving cost & immense panel space.
|
| FEATURES |
• |
‘SELECT’ push-button
on front side to select various parameters i.e. Voltage (phase to neutral
/ phase to phase), Current, Frequency, Power Factor, Active Power, Reactive
Power & Apparent Power. |
| • |
‘MODE’ push-button
on front side to select indication on respective phases i.e. L1, L2, L3
and Summation ?. |
| • |
One meter replaces
minimum of twelve meters on panel. |
| • |
Complex wiring &
panel space required are reduced. |
| • |
‘PFEr’
P.F. indication when input current is not applied. |
| • |
‘ErLo’
Frequency indication when input signal voltage is not applied. |
| • |
"– –
– – “ Frequency indication on Σmode when any one
of phase voltage signal is absent. |
| • |
Sign Indication depend
upon current direction,
“– “
sign / no sign indication for EXPORT / IMPORT respectively for Active /
Reactive Power.
“– “
sign / no sign indication for LAG / LEAD respectively for Power Factor. |
| • |
Auto scrolling by pressing
‘MODE’ & ‘SELECT’ push buttons simultaneously.
(6 sec parameter change over time) |
| • |
Eight digit (4+4) indication
for Active Energy with ‘MSB’ push-button on front side. Normally
energy is indicated on 4 digit seven segment Display. To view most significant
4 digits, press ‘MSB’ push button. ( i.e. if total Active Energy
reading is 023456.78 , normally meter will indicate 56.78 .When MSB push-button
pressed meter will indicate 0234 with ‘MSB’ LED ON.) |
| • |
X10 LED indication
when CTR is above 1200A. (i.e. total Active Energy reading is to be multiplied
by 10). |
| • |
PULSE output. |
| ELECTRICAL
SPECIFICATIONS |
| • |
TYPE :
|
3 Ph –
3 EL – 4 W |
| • |
SENSING
: |
True RMS |
| • |
INPUT
VOLTAGE : |
63.5 V
/ 110 V / 240 V / 440 V |
| • |
INPUT
CURRENT : |
1A / 5A
(2% to 100% of nominal) |
| • |
OPERATING
POWER FACTOR : |
0.1 (Lag
) - 1.00 - 0.1 (Lead) |
| • |
OPERATING
FREQUENCY : |
45 Hz to
65 Hz. |
| • |
ACCURACY |
Voltage / Current /
Power :
|
± 0.5% / 1.0%
of Full-scale |
| Frequency : |
± 0.2% of Center
Frequency |
| Power Factor : |
± 2° |
| kWh : |
±1% / 0.5% of
the reading |
| • |
AUX. SUPPLY :
|
110 / 240V
± 10%, 50 / 60Hz |
| • |
VA
BURDEN : |
Voltage |
: 0.5 VA |
| Current |
: 0.5 VA |
| Aux. Supply |
: 7.5 VA |
| • |
DISPLAY COLOUR : |
Red . |
| • |
DISPLAY TYPE : |
Two Rows
of 4 Digit, 7 Segment, LED display. |
| • |
PULSE OUTPUT : |
100 msec.
±10 msec (ON period) |
| • |
INSULATION RESISTANCE
: |
Greater
than 20MΩ at 500VDC |
| • |
DIELECTRIC TEST : |
2kV RMS
for 1 min. |
| • |
OPERATING TEMPERATURE
:
|
0°
C to 55°C. |
| • |
STORAGE TEMPERATURE
: |
-20°
C to 70°C. |
| • |
HUMIDITY : |
Upto 95%
RH. |
