How Often Should Emergency Luminaires Be Tested?

The emergency luminaire test duration is the time a luminaire must run on its battery to prove it can last its rated duration. In practice, a short monthly function test and a full-duration test once a year are usually carried out together. The rated duration is most often one or three hours; the exact value comes from the facility's design documents.

On site, the problem is rarely that the test is never done. It is that the test is done wrongly. A luminaire lights up when someone presses the button, everyone assumes the test is complete, and yet when the power actually fails the battery runs out after a few minutes. During an inspection, records are requested, and without a record the test counts as not performed.

This article covers the test types, how to determine the duration, how to run each test step by step, and how to keep records. The goal is to leave you with a procedure that works, whether you run a company serving many facilities or you manage your own building.

What is an emergency luminaire test and why is it done?

An emergency luminaire test is a check that proves the luminaire switches on when mains power fails and provides enough light for evacuation. The battery inside ages over time, the charging circuit can fail, and the lamp or LED module can reach the end of its life. None of these faults is visible from the outside; they only show up during a test.

Turkish fire protection regulations require emergency lighting on escape routes and at exits, and they require it to be kept in working order. Keeping it in working order means testing it periodically after installation. TS EN 1838 is known as the standard covering the lighting requirements of emergency lighting, and TS EN 50172 as the one describing the maintenance and testing of such systems. Rather than debating which clause requires which interval, it is safer to open the document your project is based on and follow the value written there.

A test answers two separate questions:

• Does the luminaire switch on immediately when the mains is cut?
• Does it give enough light for the whole period it is supposed to stay on?

The short test answers the first question, and the full-duration test answers the second. One does not replace the other. A luminaire that passes the short test may have a battery that dies within the first half hour of a full-duration test. That is why both tests need to be in the schedule and recorded separately.

In an untested system, the problem appears at the worst moment: during a real power cut or a real fire. Lights going out after a few minutes in a smoke-filled corridor seriously lengthens evacuation time. The cost of testing is very small compared with that risk.

How is the emergency luminaire test duration determined?

The emergency luminaire test duration depends on the luminaire's rated duration (its autonomy); the full-duration test lasts as long as the time stated on the label or in the project. If the label says one hour, the test takes one hour, and if it says three hours, the test takes three hours. Shortening the duration defeats the purpose of the test.

Verify the rated duration from these sources, in order:

• The label or product marking on the luminaire
• The facility's emergency lighting project and design report
• The project file approved by the fire department or the relevant authority
• The manufacturer's technical data sheet

If these sources disagree, use the longest duration and note the difference separately. For example, if the label says one hour but the project requires three, there is a mismatch. Do not bury it in the test result; report it in writing to the facility manager.

Keep two points in mind when setting the duration. First, the rated duration applies to a new battery. Over the years capacity drops, and in a full-duration test the luminaire may fail to reach the end of the period. Second, the duration varies by luminaire type. Maintained luminaires, which are always on, and non-maintained luminaires, which light up only in an emergency, behave differently, so track them in the same table but on separate rows.

At the end of the full-duration test the luminaire is still expected to give visible light. Any luminaire that goes out before the time is up counts as failed, and a battery or luminaire replacement should be planned immediately afterwards.

How is the monthly function test performed?

The monthly function test is a quick check that confirms the luminaire switches on when mains power is cut. It usually takes a few minutes, and its purpose is not to drain the battery but to see that the circuit works. In facilities with many luminaires, the test is done in groups.

The order of work is as follows:

• First, agree with facility management on the time of the test and let occupants know.
• Next, cut the mains locally, using the test key or the breaker of the relevant circuit.
• Check each luminaire by eye to confirm that it switches on and gives light.
• Confirm that the charge indicator, usually a green LED, comes back on when the mains returns.
• Finally, enter the status of each luminaire in the record.

A common mistake in this test is switching off the main breaker of the entire building at once. That also affects computers, doors and other systems, and it makes it harder to see which luminaire is faulty. Cutting power by zone is both safer and easier to trace.

Some luminaires have an automatic test feature, where the unit runs a short test by itself and reports its state through an indicator. This is useful, but it means nothing unless someone looks at the indicator. Even with self-testing systems, you should record that the indicators were checked at regular intervals.

After the test, allow time for the luminaires to recharge. A luminaire with a drained battery cannot provide enough light if a real outage happens at that moment.

How is the annual full-duration test carried out?

The annual full-duration test verifies that the luminaire gives light for its entire rated duration. During the test the mains is withdrawn from these luminaires and they are left to run on battery. For this reason it must be planned much more carefully than the short test.

At the planning stage, look at these points:

• Schedule the test for when building use is lowest, for example a weekend or a night shift.
• Inform security and night-shift staff, and remember that no emergency lighting backup will remain while the test is running.
• Allow for the time needed to recharge immediately after the test.

The order of work is as follows. First, record the start time. Next, cut the mains and check that the luminaires switch on. During the test, check by eye at regular intervals, for example every half hour, that the light continues. When the rated duration ends, luminaires still giving light pass. Note the number of any luminaire that went out early and the time it went out.

After a full-duration test it is essential to leave enough time for the batteries to charge again. Otherwise the building is partly unprotected right after the test. In large facilities, the luminaires are therefore split into several groups and the tests are spread over different days, so one group recharges while another is being tested.

A common mistake is to see a luminaire go out in the middle of the test and shrug it off as old. Every failed luminaire is a separate nonconformity, and the next step should be noted: battery replacement, luminaire replacement or a circuit check.

How are test results recorded?

A test record is the document that shows which luminaire was tested, when, by whom and with what result. In an inspection, saying we did the test has no value; without a record, the test counts as not performed. When records are kept well, the same document serves both the inspection and the maintenance plan.

A test record should include at least this information:

• Facility, floor, and luminaire number or location
• Test type (monthly function or annual full-duration) and test date
• Name of the person who ran the test
• Result: passed, failed, or went out before the time was up
• If failed, the action taken and the date of that action

Giving every luminaire a unique number is the single biggest help. When luminaires are numbered on the plan, the field team can find a faulty one at a glance. With paper forms, the most common problems are lost or unreadable sheets; electronic records are more reliable because dates and results are harder to alter.

Do not leave failed results sitting on the same form; turn them into a separate work order. Otherwise the faulty luminaire will fail again at the next test and nobody will know who was supposed to fix it. After the fix, the luminaire must be tested again and the result recorded; simply replacing the battery is not enough.

What faults appear during testing and what should be done?

The most common faults found during testing are battery ageing, a charging circuit that does not work, and a failed lamp or LED module. Each has different symptoms, so recognising the fault shortens maintenance time.

If a luminaire does not light at all, first check the mains supply and the charge indicator. If the indicator is off, the luminaire is not charging; the cause may be the supply line, a fuse or the luminaire's own circuit. If the indicator is on but the luminaire does not switch on, the battery or the control board is at fault.

If a luminaire lights in the short test but goes out early in the full-duration test, the battery capacity has dropped. This is the most common fault. A battery replacement is usually enough, but if the luminaire is very old, replacing the whole unit may be more economical. Decide this by looking at the manufacturer's spare part availability and the age of the luminaire.

Another problem is when all the luminaires in the same zone fail together. In that case, instead of replacing them one by one, check the supply circuit. A shared fuse or cable fault can affect the whole line.

If a faulty luminaire is waiting for replacement, a temporary measure is needed in that zone. For example, keeping an additional portable light on the escape route and notifying the facility manager in writing closes the gap, at least temporarily.

How do you plan the test schedule?

A test schedule is the plan that defines in advance which luminaire goes through which test in which month. For a company serving many facilities, the biggest difficulty is remembering hundreds of luminaires at once. That is why the schedule needs to be built from the start.

First, draw up the luminaire inventory of each facility. Next, divide the luminaires into groups by floor or zone. Run the monthly tests on all groups every month, and spread the annual full-duration tests across the groups. That way the whole building is never unprotected on the same night.

When building the schedule, keep these points in mind:

• In buildings with patients, elderly people or children, set test times when occupants will not be affected.
• In production facilities, take the shift pattern into account.
• Re-test luminaires that failed in the previous test first in the next period.
• Notify facility management of test dates in advance.

Keep delays visible too. A test that was planned but not carried out is as problematic as one that was never planned. Even a simple list is enough: planned date, actual date and the difference. When the difference grows, ask why.

Finally, compare the test schedule once a year with the intervals in the regulations and project documents. When the use of the facility changes, a new floor is added or luminaires are replaced, the schedule must be updated as well.

Conclusion

The emergency luminaire test duration is set by the luminaire's rated duration, and the short monthly function test and the annual full-duration test cannot replace each other. Verify the duration on the label and in the project, run the test step by step, record the result against the luminaire number, and turn failed results into work orders.

At Yangın Takip, we provide software that lets fire safety companies follow their customers, facilities, inventory and periodic checks in one place; the schedule and records of luminaire tests can be kept within that same structure.

Related reading

• Yangın Tüpü Hidrostatik Testi Ne Zaman Yaptırılır?
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• Periodic Maintenance Software