Application Note

Self-Powered-Relay (SPR) takes its supply from the  CT-s connected and also the energy for tripping the breaker. SPR  either has special CT made for the relay or is made to be used directly with standard CT-s.

There are differences in how to set Sverker 900 when testing SPR that must be noticed.
1. The level of pre-fault current and time needed for pre-fault.
2. The pickup level for trip signal if not dry contact is used.

Here secondary testing of SEG relay (formerly Woodward) WIP1 and WIC1 will be described.

Application for Testing Self Powered Relays SEG (Woodward) WIP1 and WIC1

TECHNICAL GUIDE

Gain insight into the different types of oil testing methods, including oil dielectric breakdown testing moisture content testing. This guide covers best practices for oil testing, the correct equipment to use, and the different IEEE/IEC standards to adhere to when testing.

Guide to Insulating Oil Dielectric Breakdown Testing – OTS Series

APPLICATION NOTE

Continuous coal and biomass monitoring is an important step in understanding the conditions leading to a fire. Hot spots can flare up devastating spontaneous combustion, potentially causing thousands of dollars in material loss, dangerous work conditions, and difficult extinguishing options. Prevention is becoming readily available with cost-effective continuous thermal image monitoring as a method for early warning.

Using Fixed Thermal Imaging to Identify Dangerous Hot Spots in Coal or Biomass
Thermoview TV40 Datasheet
Thermoview TV40 Brochure

Trying to decide which Megger tester is best for you?
Download the New LVI catalog

Megger LVI Catalogue 2022

Supporting Twisted Pair Networks

Twisted pair copper cabling remains the primary media for connecting users and devices to a network. Copper cabling provides secure and exclusive high performance connections to every user at a reasonable cost. Copper’s ability to provide Power over Ethernet means that devices don’t require separate power cabling, reducing costs and increasing safety. PoE over copper cabling enables easy connections for the rapidly expanding Internet of Things (IoT). Even Wi-Fi requires copper cabling for access points.

If you install or support copper-cable-based networks or devices, the right tool can save time and make sure things get done right the first time. The tool you need depends on the jobs you expect to perform:

• Am I installing cabling that is expected to support operations decades into the
  future?
• Is my job mostly about day-to-day support of installed users and devices?
• Do I need to add users or devices to an existing network infrastructure?
• Do I need to provide documentation of my work?

As a result, it’s important to know the distinction between the different cable test categories and instrument functionalities so you can choose the tester that truly performs the tasks needed.

A GUIDE TO SELECTING A COPPER TESTER

CASE STUDY

Maintenance professionals tasked with maintaining electric motor reliability are often concerned with testing their critical motors at voltages well above nameplate levels. It can certainly feel counterintuitive to test a 460V motor to 2,000V or a 4,160V motor to 9,320V. After all, the motor is only rated for this lower voltage, right?

Does High Voltage Testing Damage A Motor?