Circuit breaker loop resistance tester uses pictures and principle

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FR series circuit breaker circuit resistance tester, also known as loop resistance tester, referred to as the loop; has a small size, light weight, easy to carry. It is a high-current digital micro-European industrial instrument developed and produced independently by our company. Its product design is novel and it is suitable for various indoor and outdoor test occasions.

Features
1, with anti-power frequency interference function.
2. The test current is automatically stable without manual adjustment.
3, automatic constant current, effectively reducing the impact of AC power fluctuations on the test.
4, the use of potentiometer measurement principle, data synchronization and high-speed sampling, completely eliminating the test current fluctuations on the accuracy of the instrument.
5, using four-terminal wiring method, effectively ruled out the test line resistance, contact resistance on the test results.
6, the operation is simple, just press the test button, you can get the measured loop resistance and test current value.
7. The loop resistance value is automatically latched for easy viewing.
8, small size, light weight, easy to carry.
9, equipped with soft test lines and special clips.
working principle
The use of potentiometer measurement principle, and data synchronization high-speed sampling technology, when the DC current through the measured resistance Rx, the resulting voltage drop Vrx, standard resistance RN, voltage drop Vrr.
From Ohm's law: Vrx/Rx=Vrr/Rr will get the measured resistance: Rx=Vrx/Vrr.
Dear Customer:
Thank you for your attention to our products. In addition to this product introduction, the company also has a solar junction box tester, insulation resistance tester, power parameter tester, transformer DC resistance tester, capacitance and inductance tester, wireless high-voltage nuclear phase. Instrument, electrical test equipment and other products, if you are interested in our products, welcome to inquire. Thank you!

Laser Machine:

Laser machine is a general term for Laser Engraving Machine, Laser Cutting Machine and Laser Marking Machine. The laser machine uses the working principle of its high temperature to act on the surface of the material to be machined, and at the same time, according to the input to the machine internal graphics, draw the customer requirements of the pattern, text and so on.

 

Laser model:

Model number

CX-1290

Whole machine size

1720 x 1310 x 1070mm

Engraving size

1200 x 900mm

Table

Honeycomb

or Blade shape

Laser tube

Sealed CO2 glass laser tube

Laser power

60W for engraving

80W for cutting

Working voltage

AC 110 - 220V ±10%, 50 - 60Hz

Total power

<1,000W

Engraving speed

0-60.000mm/min for engraving

0-24,000mm/min for cutting

Re-position accuracy

±0.05mm for engraving

±0.1mm for cutting

Control

DSP system with USB interface

Operating temperature

0 - 45°C

Operating humidity

5 - 95%

Minimum shaping character

English 1 x 1mm

format

BMP, PLT, DST, DXF, and AI

Driving motor

Stepper

Cooling

Water cooling

Auxiliary equipment

Exhaust-fan, air-exhaust pipe

Software provided

Laser Cut 5.3

Control panel

English

Compatible software

CorelDraw / AutoCAD / Photoshop

Net Weight

280KG

 

Laser Machine

Laser Machine,3D Laser Scanner,Metal Cutting Machine,Laser Engraving Machine

JINAN HT MACHINERY CO.,LTD , https://www.jncncrouter.com