HIGH-POTENTIAL DC AND AC METERS ITV-140R SERIES
Equipment in this category:
The operating range of the measured currents is shown in Table 1.
Table 1
Meter version |
ITV-140R-3 |
ITV-140R-9 |
ITV-140R-30 |
Working range of measured currents, mA |
0.010 - 3.000 |
0.030 - 9,000 |
0.10 - 30.00 |
NOTE - Meters measure the average (rectified average) DC value and AC RMS value with a frequency of 50-60 Hz.
AC bandwidth, Hz - 0-1000
Input resistances of BV are given in table 2.
table 2
Meter version |
ITV-140R-3 |
ITV-140R-9 |
ITV-140R-30 |
Input impedance, Ohm |
232 |
78 |
23 |
The limit of the absolute measurement error in the operating range of the
measured currents and temperatures is determined by the formula:
D = 0.01 ∙ i x + 5 e.m.r., (1)
where, i x - the value of the measured current, mA; e.m. r. - unit of the least significant digit.
Discreteness of counting, mA - 0.001
Speed - two measurements per second
Frequency range of the radio channel, MHz, 845-945
Number of frequency channels 16
Transmitter power, mW 1
Radio communication range (open space), m - 5-10
The meter can withstand an overload by a single current pulse with a duration of no more than 10 ms and an amplitude of no more than 150 A.
BV and MI are powered from built-in Ni - MH AA batteries with a voltage of 1.2 V and a capacity of 2.1 A ∙ h.
Supply voltage - 5V, duration of continuous work without recharging - at least 8 hours.
Dimensions / weight:
- high-potential block ITV-140R-BV - diameter 170x100 mm / 1 kg;
- indicator module ITV3-MI - 95x190x40mm / 0.5 kg
Product service life - 10 years
Designation |
Name |
Qty. |
Note |
ITV-140R-BV.00.00.00 |
High-potential block ITV-140R-BV |
1 |
|
ITV-140R-MI.00.00.00 |
Indicator module ITV-140R-MI |
1 |
|
- |
Power supply stabilized |
2 |
Charger |
|
Rechargeable Ni-MH rechargeable battery, size AA, 1.2 V, 1800 mAh |
8 |
|
- |
Three-pin cable socket |
1 |
For terminating output coaxial cable |
ITV-140R.00.00.00RE |
Manual |
1 |
|
High-potential DC and AC current meters ITV-140R series (hereinafter referred to as "meters") are designed to measure DC and AC sinusoidal currents with a frequency of 50-60 Hz and up to 3 mA (ITV-140R-3), 9 mA (ITV-140R- 9) and 30 mA (ITV-140R-30) in circuits at potential up to 140 kV.
A feature of the meters is the absence of a galvanic connection between the high-potential measuring and low-potential indicator circuits, which ensures complete operational safety.
The meters are intended for use as part of indoor test facilities in the temperature range from + 5 ° C to + 40 ° C, relative humidity of the ambient air up to 90% at 25 ° C and pressure from 630 to 800 mm Hg. Art.
Shock, vibration, presence of corrosive liquid vapors (acids, alkalis, etc.) in the air are not allowed at the installation site.
The product can be operated by one operator from among the persons of electrical personnel who have permission to perform work in existing electrical installations with voltages up to and above 1000 V.
The version of the meters corresponds to group 3 of devices according to GOST 22261.