35
7
THE ON BOARD MEMORY
The on board memory is a 1 Mbyte non-volatile flash memory for data storage over extended surveys periods including
waveform capture for current and voltage.
Two different LOG types are selectable:
- In Standard LOG, Max 7840 records of all the measurements are available after a memory reset.
- In Sample LOG, Max 677 records of all Voltages and Currents waveforms are available after a memory reset.
Data recording rate is selectable from 1 to 99 minutes.
Fast data downloading to PC is provided via a high-speed RS232C serial link and based on WIN 95/98 and NT 4.0
software MicroWin.
8
TECHNICAL SPECIFICATIONS
8.1
GENERAL FEATURES
•
Inputs:
L1, L2, L3, N, I1, I2, I3.
•
Input specifications:
Voltage:
(L1-N, L2-N, L3-N) direct inputs max 600 Vrms (STAR);
(L1-L3, L2-L3, L1-L2) direct inputs max 600 Vrms (DELTA) from 0 to 600 Hz;
up to 999999 V (with external PTs whose primary and secondary are selectable).
Input impedance: 4 M
Ω
Current:
(I1, I2, I3) direct inputs 1 Vrms up to 600 Hz, or 1 VDC;
1000A from 30 to 600 Hz (with standard AC clamp meters);
from 0 to 600 Hz (with optional AC/DC clamp meters);
up to 999999 A (with external CTs whose primary and secondary are selectable).
Input impedance: 10 k
Ω
•
Voltmeter input overload:
maximum acceptable voltage 625 Vrms, peak voltage 825V.
•
Current input overload:
5 times full scale value (with protection trip at threshold value).
•
Units of measurement:
m, k, M, W, V, A, VA, Var, Hz, Wh, VArh, VAh, P.F. Cosø, THDF.
•
Measurement frequency:
1,2 seconds without harmonics - 2,5 seconds with harmonics.
•
Number of scales:
3 voltage scales; 3 current scales with automatic scale change.
•
Automatic scale change:
Scale change response time: 1,2 secs
Change to higher scale takes place at 105% active scale.
Change to lower scale takes place at 20% of active scale.
•
Clock:
Quartz, output to LCD
Printed date and time output.
•
Batteries:
One Ni-Cd 6V 940mAh battery of five 1,2V 940mAh elements in series, giving autonomy of approximately 7 hours
without printing and display backlight. Battery recharge time: 24 hours (from mains).
One 3,5V 280mAh lithium battery as memory buffer (guaranteeing memory backup for approximately 7 years).
IMPORTANT: when the lithium back-up battery is changed, date and time are lost.
Battery replacement must be carried out by qualified, authorized staff at ELCONTROL ENERGY service centres.
•
Measurement display:
Backlight LCD with temperature range of -30
°
C to +80
°
C.
•
Clock display:
4 digit LCD with temperature range of -10
°
C to +60
°
C.
•
Dimensions:
251 x 239 x 104 mm.
•
Instrument weight:
2,9 Kg.
•
Weight of MICROVIP3 PLUS KIT:
6,3 Kg.
•
Degree of protection : IP 40
