TechAware Newsletter Archive

Keep up to date with news, tips and product information from the team at Startco.  Sign up for our TechAware newsletter and browse through the archive of previous volumes below.

Please contact us if you have any questions or would like further information on any of our products.

Tech Aware 9

Arc Flash Monitor Comparison

Welcome to the first Tech-Aware for 2016.

If you are considering Arc Flash protection for your power systems or have existing arc flash protection, in edition 9, we cover the comparison between the Littelfuse Arc Flash units: PGR-8800 and the newer AF0500…

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Tech Aware 8

NER Monitoring Installation & Information

Happy New Year to everyone and welcome to Tech-Aware 8: NER Monitoring Systems and Fault Finding.

Two scenarios have been highlighted over the last couple of months regarding NER systems and monitoring of these systems using Startco SE-330AU / SE-330 NER monitors. An important point to note in both these cases, is the Littelfuse NER monitors were performing the protection function exactly as they were designed to do…

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Tech Aware 7

AS2081:2011 Information

Startco receives a number of phone calls and emails seeking clarification on the requirements of AS2081-2011 and whether this standard pertains to Underground only ?

The State Legislation applicable to your mine, will determine how the current AS/NZS 2018-2011 applies to your mine…

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Tech Aware 6

PGR-8800 Arc Flash Monitor

Welcome to Tech-Aware 6: Arc Flash

One subject that has heightened concern and interest lately is Arc Flash protection. Littelfuse (Startco) has the PGR-8800 Arc Flash unit which has a number of benefits when implemented to minimise Arc Flash hazard…

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Tech Aware 5

Earth Leakage on VSD Applications

Earth leakage utilising the EL731 AC/DC Earth Leakage Relay – VSD Applications

Following on from Tech-Aware issue 3 and issue 4, Littelfuse Startco has in the last 12 months released the EL731 AC/DC Earth leakage Relay (See attached data sheet), which is AS2081-2011 Compliant…

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Tech Aware 4

Earth Leakage CT locations on VSD’s

Part B: Locating CT’s for Earth Leakage protection on VSD’s

One question which is discussed back and forth amongst suppliers, consultants and clients is;

a)      “Where are the CT’s installed on a Variable Speed Drive – Input or output ?” and

b)      “Will the Earth Leakage relay see a fault on the motor when the CT is located on the input side of a variable speed drive?”…

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Tech Aware 3

Earth Leakage CT location & Selection

Part A: Earth Leakage Relays CT location / selection.

The Littelfuse Startco range of AC /DC Earth Leakage relays offers innovation, reliability and features suited to a range of applications. The range of earth leakage relays offered by Littelfuse Startco include:

SE-701 Series: Setting Range: 1 – 99 % of CT Primary rating. Time delays: 50ms to 2.5 sec. DFT Filtering: Yes. See attached brochure…

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Tech Aware 2

Parallel Path Issues with NER Monitoring

Welcome to our new Tech-Aware Series: Volume 2

We a have recently had a couple of technical enquiries regarding NER monitoring and PT’s in parallel on the Secondary of the supply transformer where the NER monitoring is located.

The NER system must consist of the NER resistance only…

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Tech Aware 1

Earth Leakage CT Installation Information

Startco Pty Ltd offers an extensive service in Technical Support. One initiative at Startco is to assist our clients through occasional emails discussing the issues heavy industry and mining face with site installations. We often come across re-occurring enquiries relating to clients difficulties with an installation or nuisance trips caused by external influences on CT’s, protection relays or installation practices…

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