| DIGITAL SELF TEST-DST™ | ||
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The Digital Self-Test, DST™, is a unique, fully automated, independant, self-testing unit that complies with the requirements of BS5266 and the forthcoming International Standard for automatic testing devices, IEC62034 and unlike many is suitable for incorporation into virtually aLL NIckel Cadmium, Nickel Metal Hydride and VRLA, Battery powered, self contained emergency lighting luminaireS. |
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The DST™ is
thorough and carries out the monthly and yearly test
regime contained within BS5266 without need for manual intervention. When
the unit detects a fault condition it provides both a visual and an audible
alarm indication (if not required, the audible alarm can be simply disabled
when the DST is commissioned). |
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DST™ is
reliable and even when it has failed its associated luminaire
for duration or light output discrepancies, it will still allow the
luminaire to operate to the best of its ability in its emergency mode. |
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Additionally, the DST™ has
a non-volatile memory so if the power fails the clock is suspended but
the test sequence remains unaltered. When the mains power is restored
they simply carry on from the point at which power failed. |
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On
initial power up the DST's intelligence allows it to
enter a battery pre-conditioning mode to ensure the batteries are in
a suitable condition to supply sufficient power for emergency operation.
Testing, initiation and clock resetting are carried out via a single
discrete push button. |
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| Performance | ||
| DST™ Standard Testing programme conforms to the requirements of BS2566-8 EN50172:2004 | ||
| Monthly: | 1 minute, functional test | |
| Annually: | 3 hour, full rated duration test | |
| DST™ LED Status Reports are made via a single tri-colour LED. | ||
| Continuous GREEN: | Mains, battery, charger and previous test correct | |
| Continuous RED: | Test in progress | |
| Flashing AMBER: | Test fail alarm* | |
| (With optional sound alarm) | ||
| LED off: Mains failure or battery faulty | ||
*If
a fault is detected during the automatic tests the unit will enter a cycle where it emits an
optional audible alarm, it will then sound intermittently until a successful test
has been achieved. A single bleep only will be emitted during manually
initiated test. |
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| Ordering Codes | ||
| DST - 2 cell | Suitable for all modules using 2 Cell Batteries |
| DST - 3 cell | Suitable for all modules using 3 Cell Batteries |
| DST - 4 cell | Suitable for all modules using 4 Cell Batteries |
| DST - 5 cell | Suitable for all modules using 5 Cell Batteries |
| DST - 6 cell | Suitable for all modules using 6 Cell Batteries |
| DST - 8 cell | Suitable for all modules using 8 Cell Batteries |
| DST - 10 cell | Suitable for all modules using 10 Cell Batteries |
| DSTT - 12V | Suitable for Tungsten Lamps using 12V VRLA Batteries |
| LED-INT | Interface for 4 volt LED circuits from 1 to 5 watts and 6V 10W tungsten lamps |
| Dimensions | |
| Height: 30mm x Length 130mm x Width 50mm, Fixing centres: 120mm, Weight: 80 grams. | |
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