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LST series high insulation resistivity measuring instrument
LST series high insulation resistivity measuring instrument
Product details
1Introduction to Performance Characteristics and Applications
LST seriesThe volume surface resistivity measuring instrument isThe portable digital display high resistance measuring instrument produced by the company complies with national standards GB/T1410-2006Test method for volume surface resistivity of solid insulation materialsGB/T 31838.2-2019Solid insulation material dielectric and resistanceCharacteristics2 Part: Resistance Characteristics(DCmethod)Volume resistance and volume resistivityGBT2439-2001Conductive properties of vulcanized rubber or thermoplastic rubberMeasurement of electrical resistivity for energy and dissipation performanceGBT1692-2008Determination of insulation resistivity of vulcanized rubberGBT10064-2006Measurement of Solid InsulationThe insulation resistance of materialsExperimental methodsGB/T3048.5Test method for electrical performance of wires and cablesInsulation resistance testThe requirements for testing instruments in China are ideal equipment for testing the insulation resistance of wires, cables, and other electrical products. Over the years, thousands of instruments have been used in domestic and foreign wire and cable factories, anti-static product production plants, standard measurement departments, power departments, military and scientific research units, and have been selected by the National Wire and Cable Testing Center and the National Anti Static Testing Center as specialized equipment for product type testing. Compared with similar products, it has the following characteristics:
1. Collecting3 1/2Digital display, bridge measurement circuit, high measurement accuracy, convenient and accurate reading.
2. Adopting a portable structure, it is small in size, light in weight, and easy to use.
3Powered by batteries, the instrument can operate in a suspended state to ground, completely solving the problem of high voltage short circuit caused by water tank grounding in wire and cable testing. It not only improves anti-interference ability but also eliminates the need for power line hanging, making it suitable for measuring coiled cables in production sites. It can also be powered by an external stabilized power supply in fixed situations.
4. Built in timer, automatic reading lock, especially convenient to use when testing the insulation resistance of wires and cables for specified measurement times.
II
Model/Parameters
LST-121
LST-122
*Resistance measurement (Ω)
10—2×1019
0—2×1019
Current measurement（A）
—
10-16—2×10-4
Rated voltage（V）
100， 250， 500，1000
10，25，50，100，250，500，1000
display
3 1/2 digit large screen with backlit digital display
*Measurement timing
1min—7 min
electricitysource
DC8.5-12.5V (8 No.1 batteries) or external power supply
Built-in rechargeable battery
External dimensions（mm）
280×240×105( l×b×h)
320×290×115( l×b×h)
Quality (weight)
3KG
Usage environment
Temperature:0-40 ℃, relative humidity<80%
IIILST-121,LST-122Resistance measurement error
Measure voltage of 100V, 250V, 500V, 1000V
Measure voltage of 10V, 25V, 50V
measuring range
Basic error
measuring range
Basic error
0—109Ω
±( 1 %RX+2 words)
0—108Ω
±( 1 %RX+2 words)
>109—1010 Ω
±( 2 %RX+2 words)
>108—109 Ω
±( 2 %RX+2 words)
>1010—1012 Ω
±( 3 %RX+2 words)
>109—1011 Ω
±( 3 %RX+2 words)
>1012—1013 Ω
±( 5 %RX+3 words)
>1011—1012 Ω
±( 5 %RX+3 words)
>1013—1014 Ω
±( 10 %RX+5 words)
>1012—1013 Ω
±( 10 %RX+5 words)
>1014 —1015 Ω
±( 20 %RX+10 words)
>1013—1014 Ω
±( 20 %RX+10 words)
>1015 Ω
±( 50 %RX+20 words)
>1014 Ω
±( 50 %RX+20 words)
four、 Basic error of current measurement
measuring range
Basic error
≥10-7A
±( 1 %IX+2 words)
≥10-8—10-7 A
±( 2 %IX+2 words)
≥10-10—10-8 A
±( 3 %IX+3 words)
≥10-11—10-10 A
±( 5 %IX+5 words)
≥10-12—10-11 A
±( 10 %IX+10 words)
<10-12 A
±( 20 %IX+20 words)
5、 Configuration List
Serial Number/model
LST-121
LST-122
1
One host
2
shielding box+solid electrode
3
Test a set of wires
4
instructions+One certificate of conformity
5
One power cord
One dedicated charger
The following are optional options
1
Anti static engineering resistance measurement standard electrode
2
Thermostatic water tank
3
liquid electrode
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