Megger Ltw425 Loop Impedance Tester Two Wire Non Tripping Testing

Product Details
Customization: Available
Certification: ISO9001, CCC, Contact Us
Protection: Shock Resistance
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Number of Employees
8
Year of Establishment
2018-02-06
  • Megger Ltw425 Loop Impedance Tester Two Wire Non Tripping Testing
  • Megger Ltw425 Loop Impedance Tester Two Wire Non Tripping Testing
  • Megger Ltw425 Loop Impedance Tester Two Wire Non Tripping Testing
  • Megger Ltw425 Loop Impedance Tester Two Wire Non Tripping Testing
  • Megger Ltw425 Loop Impedance Tester Two Wire Non Tripping Testing
  • Megger Ltw425 Loop Impedance Tester Two Wire Non Tripping Testing
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  • Overview
  • Product Description
  • Detailed Photos
  • Packaging & Shipping
  • Company Profile
  • FAQ
Overview

Basic Info.

Model NO.
LTW425
Installation
Interface USB Type B (Device)
Housing
High Strength Aluminum Alloy/ABS
Model
Ltw425
Working Voltage
50 V to 440 V
Center Tap Circuit Test
110V
Level Equipment Testing
Cat IV
Automatically
Start and Run
Resolution
0. 001 Ohm
Name
Dual Line Non Tripping High-Resolution Circuit Tes
Brand
Megger
Transport Package
Waterproof and Anti-Collision
Specification
Contact Us
Trademark
Megger
Origin
America
Production Capacity
5000

Product Description

Product Description

 

LTW425 Dual line non tripping high-resolution circuit tester

 Loop Testing Loop testers are used to measure earth fault loop impedance and determine prospective fault currents. Initially loop testers used a high current load to measure the voltage drop on the supply and measure the source impedance. With the introduction of RCDs on many circuits alternative methods of loop testing have been developed to prevent tripping during a loop test. The table below shows how different loop testing methods have different benefits; none of the test techniques are perfect. All tests are performed on live circuits with a variety of protective devices installed. Different test types are affected by these parameters in different ways and users should be aware of how this may affect the results. Loads should be disconnected during a loop test in case they interfere with the measurement.

Quick, accurate measurements within 3 - 4 s Same test for PE and L-N tests Repeatable results, 2 wire connection Less susceptible to leakage currents
Quick, consistent measurements Same test for PE and L-N tests Low energy test up to 30 s
Will not trip any RCD >30 mA; same as ½ x I no-trip RCD test High dc current to block RCD plus high current test typically 23 A
Less susceptible to noise Industry is tending towards lower test currents
Faster than 2- wire test Neutral connection required for power, but can be connected to earth


Test currents High loop test currents develop large signals that are easier and more accurate to measure. They also can cause large touch voltages on the installation under test that should be monitored to prevent danger. Lower test currents are less likely to operate protection and touch voltages are reduced. Loop testing limits The IET Guidance Note 3 says that circuits rated up to 50 A can be tested with a loop tester with a resolution of 0.01 down to values of 0.2 Ohms. Values below this can be inaccurate and alternative methods should be used to calculate prospective fault current.

Detailed Photos

Megger Ltw425 Loop Impedance Tester Two Wire Non Tripping TestingMegger Ltw425 Loop Impedance Tester Two Wire Non Tripping TestingMegger Ltw425 Loop Impedance Tester Two Wire Non Tripping TestingMegger Ltw425 Loop Impedance Tester Two Wire Non Tripping TestingMegger Ltw425 Loop Impedance Tester Two Wire Non Tripping TestingMegger Ltw425 Loop Impedance Tester Two Wire Non Tripping TestingMegger Ltw425 Loop Impedance Tester Two Wire Non Tripping Testing
 
Packaging & Shipping

 

Megger Ltw425 Loop Impedance Tester Two Wire Non Tripping Testing
Company Profile

AVANTEST ELECTRONICS established in February 2018, integrates sales, system integration, customized services, R&D, and production.The company serves as a leading solution provider in relevant industries. Its R&D department team is experienced in microwave radio frequency, communication, and semiconductor industries. All of the core technical staff hold doctoral degrees. Its products and solutions are widely used in traditional industries and emerging technological fields, including but not limited to communication, aerospace, power electronics, industrial automation, automotive electronics, rail transit, semiconductor, new energy, LED lighting, medical electronics, and electromagnetic compatibility. Its customer base comprises research institutes, testing organizations, and industrial clients.

In addition to one-stop solutions for clients, the company also acts as an authorized agent for leading domestic and international brands in product testing and measurement. including, but not limited to: Keysight, Ceyear, Rohde Schwarz, Tektronix, Agitek, Anritsu, VIAVI, Gwinstek, ActionPower, Xinertel, and others.

The product range includes but is not limited to: oscilloscopes, signal generators, spectrum analyzers, network analyzers, DC power supplies, AC power supplies, parameter analyzers, device analyzers, microwave power meters, frequency counters, noise figure testers, EMI test receivers, signal quality analyzers (high-speed bit error rate testers), wireless communication testers, protocol analyzers (PCIe, SAS/SATA, USB, etc.), safety compliance testers, digital multimeters, LCR meters, electronic loads, special power sources, network testers, network impairment emulators, and others.
 

Megger Ltw425 Loop Impedance Tester Two Wire Non Tripping TestingMegger Ltw425 Loop Impedance Tester Two Wire Non Tripping TestingMegger Ltw425 Loop Impedance Tester Two Wire Non Tripping TestingMegger Ltw425 Loop Impedance Tester Two Wire Non Tripping Testing
FAQ

 

Q 1:  Why should we choose your company over others? 

Dear customer, thank you for your interest in Avantest and considering us as your supplier of instrumentation testing equipment.Avantest has more than ten years of experience in the field of instrumentation and testing equipment. Our team consists of a group of industry experts and senior engineers who have in-depth understanding of market demand and industry trends, and are able to provide you with the most suitable solutions.

Q2:Can you provide customized services?

We understand that each customer's needs are unique. Therefore, we provide customized products and services, designing and producing according to your specific needs. Regardless of the size of your project, we can provide you with a satisfactory solution.

Q3:Whether to provide after-sales service?

Perfect after-sales service,We value long-term partnerships with our customers, so we provide comprehensive after-sales services, including equipment installation, debugging, training, and maintenance. Our customer service team is always on standby to ensure that any issues you may encounter during use are promptly resolved.

Q 4:  Where is your company? Can I come and visit?

Our company is located in Yida Huichuang Center, Pukou Avenue, Pukou District, Nanjing City, Jiangsu Province, China.We are very much looking forward to your arrival! We are very glad to have the opportunity to meet with you, please feel free to drop by.

Q 5:  Product range ?

The product range includes but is not limited to: oscilloscopes, signal generators, spectrum analyzers, network analyzers, DC power supplies, AC power supplies, parameter analyzers, device analyzers, microwave power meters, frequency counters, noise figure testers, EMI test receivers, signal quality analyzers (high-speed bit error rate testers), wireless communication testers, protocol analyzers (PCIe, SAS/SATA, USB, etc.), safety compliance testers, digital multimeters, LCR meters, electronic loads, special power sources, network testers, network impairm.

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