Dewar Electronics Neutral Supply Tester (NST) M1120
This model is for use in Victoria, Queensland and South Australia, where the maximum neutral to earth voltage is 5.25 volts. Click here for the Neutral Supply Tester M1121 for NSW.
Meter installers use the NST when placing smart meters on domestic and commercial switchboards. The Dewar NST indicates a safe or unsafe condition by measuring voltage as well as impedance in relation to the connected active, neutral and reference earth.
The M1120 unit is for performing Neutral & Supply Testing as outlined in the VESI Installation Supply Connection Tests & Procedures Manual.
Use the NST to ensure the incoming active and neutral power connections have been correctly identified and are safe to use before reconnecting the main power.
Features of the M1120 Neutral Supply Tester
CAT IV 600V compliant instrument
The M1120 NST carries out automatic internal self checks to ensure correct functionality of the instrument.
The M1120 is a self-powered, passive device. It takes its power directly from the connection point, which means you won’t have to worry about flat batteries or battery replacement.
The M1120 is a compact unit with a lightweight, heavy-duty case. Its impact resistance case has an IP54 moisture and dust ingress rating.
The front panel has an easy to read LCD screen for measurement information and 3 LED status indicators.
An internal audible alarm acts as a secondary indicator to indicate a pass/fail at the end of the measurement cycle.
Items included in the box
- M1120 NST
- CAT IV 600V lead set
- Hanging Clip
- User Manual
You can purchase the following matching accessories for the M1120 Neutral Supply Tester:
- Female socket earth clip (you only need one) to connect the earth lead to an alligator clip. This way you can connect the earth lead to any earth connection point with ease.
- Earth lead adapter cable (you only need one). This converts the earth lead cable to a retractable banana connector.
- Earth trailing lead with spike (you only need one). The 20m lead plugs directly into the Neutral Supply Tester’s standard earth lead.
- Storage case Custom-built hard case designed keep the NST unit, lead set and manual neat and safe.
Click on the following thumbnail to see the accessories and how they connect to the NST M1120. You can also download a pdf here.
Compliance, service and repair
The manufacturer is able to issue re-compliance certificates and carry out services and repairs. Visit Dewar Electronics for more info.
For more info about this product, please contact us.