Földelés ellenállás: 0,01 ~ 0099 Ohm - pontosság + / - (1 + 0,01%) 0,1 ~ 0,99
Ohm - pontosság + / - (1 + 0,01%) 1,0 ~ 49,9 Ohm - pontosság + / - ( 1,5% + 0,1)
50,0 ~ 99,5 Ohm - pontosság + / - (2% + 0,5) 100 ~ 199 Ohm - pontosság + / - (3%
+ 1) 200 ~ 395 Ohm - pontosság + / - (10% + 5) 400 ~ 590 Ohm - pontosság + / -
(20% +10) 600 ~ 1000 Ohm - pontosság + / - (25% +20) Leake áram: 0,00 ~ 299mA -
pontosság + / - (2,5% + 2mA) 0,30 A ~ 2,99 - pontosság + / - (2,5% + 100mA) 3,00
~ 30,0 A - pontosság + / - (2,5% 300 mA) Termék mérete: 293 x 90 x 66 mm Leírás:
Angol Description The UNI-T UT275 earthing pliers belong to the middle class in
terms of technology and accuracy. It can quickly and safely measure the
grounding system without disconnecting the lightning conductor terminals from
the ground line of the circuit and also without the need for auxiliary
electrodes. sidewalks and asphalt). It cannot be used with single-lead lightning
conductors (without the use of an auxiliary probe), on the contrary, the more
leads the collector system has, the more accurate the measurement. It is a very
reliable, robust device from a quality manufacturer with the best price /
performance ratio on the market. It can measure resistance from 0.01 ? to 1000?
and leakage currents from 0 mA to 30A. Current measurement should only be
performed on ground cables, not on power cables, as this could affect the
magnetic properties of the clamp terminals and thus the accuracy of the
resistance measurement. The magnetic circuit of the jaws contains the voltage
and current loop of the measuring transformer. It is possible to set an optical
and acoustic alarm for current and resistance limits. The device is designed to
meet the safety standards IEC61010-1 and IEC61010-2-032. Complies with CATIII
300V category and safety standards for level II pollution. It fully complies
with the ?SN EN 61557 standard. It contains a memory storage for 30 sets of
measurements. The calibration protocol must be ordered separately, thus
extending the delivery date by 1-2 weeks. Product parameters : - pliers opening:
max. 28mm - earth resistance measurement: from 0.01 ? to 1000 ? - measurement of
leakage currents: from 0 mA to 30A - automatic range switching: yes - single
measurement speed: 1sec - LCD backlit display: display 10000, with graphic
symbols - optical and acoustic alarm: yes Technical parameters : - resistance
measurement mode Measurement range / Resolution / Accuracy 0,010? to 0,099? /
0,001? / ą(1% +0,01?) 0,10 ? to 0,99? / 0,01? / ą(1% +0,01?) 1,0 ? to 49,9? /
0,1? / ą(1,5% +0,1?) 50 ? to 99,5? / 0,5? / ą(2% +0,5?) 100 ? to 199? / 1? /
ą(3% +1?) 200 ? to 395? / 5? / ą(10% +5?) 400 ? to 590? / 10? / ą(20% +10?) 600
? to 1000? / 20 ? / ą(25% +20?) - leakage current measurement mode Measurement
range / Resolution / Accuracy 0,00 mA a? 299mA / 1mA / ą(2,5 % +2 mA) 0,30 A a?
2,99mA / 10mA / ą(2,5 % +0,1 A) 3 A a? 30A / 100mA / ą(2,5 % +0,3 A) - automatic
range switching: yes - maximum opening of the pliers: 28mm - LCD backlit
display: display 10000, with graphic symbols, size 47 x 28.5mm - single
measurement speed: 1sec - current measurement at frequency: 50Hz / 60Hz -
current current limit setting: 1mA to 499mA - freezing of values ?on the
display: yes, HOLD button - signaling of higher value of interfering
interference currents: yes - storage of measured data: yes, up to 30 sets of
measurements - signaling the number of data in the memory: yes - working
temperature and humidity: 0°C - 55°C; 10% RH - 90% RH - environment with maximum
values ?of magnetic and electric field: