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Emergency Lighting Test Module Overview
In this lesson we explore operation of a emergency lighting test module and you will learn exactly how to install the module, how to interpret the wiring diagram using the flow finger tracing principle and how to expand the module if you need to isolate more circuits than the 4 contacts that come with the standard product you buy off the shelf.
In accordance with AS2293.2, emergency lighting requires that all emergency lights be tested every 6 months by a method called a battery discharge test. This is where the supply is disconnected from the emergency lights for 90 minutes and then inspected to see if the batteries have held their charge of the load requirements of the emergency light.
Often you find that the emergency lights in a building are scattered over several circuits and therefore some extra time and consideration is required.
Issues with not having a test module installed:
- Room for human error with some lights not tested because the associated circuit breaker is not isolated during the test.
- Sometimes after a test, some circuits forget to be re-energised which fully discharges the emergency light batteries.
- Inefficient testing from having to find and locate associated circuit to isolate for the test.
Benefits of installing a emergency light test module:
- Push the button, note the time and return 90 minutes later to record results.
- Isolate several circuits at once through the use of a normally closed contactor.
- Timer will ensure that no circuits are left on by de-energising the coil when set for 2 hours.