DST™ Fully Automatic Self-Testing Module

Thorough digital emergency lighting testing

DST™ Fully Automatic Self-Testing Module

Thorough digital emergency lighting testing

Key Features

  • Fully automatic
  • Complies with the requirements of BS5266 and BSEN62034
  • Suitable for use with most nickel cadmium, nickel metal hydride and valve regulated lead acid self-contained emergency luminaires
  • Carries out the thorough monthly, 6 monthly and annual tests contained within
  • BS5266 without the need for manual intervention
  • Provides both a visual and audible alarm indication when a fault is detected
  • Audible alarm can be disabled if required
  • Non-volatile memory ensures the clock is suspended during a power failure but the test sequence will remain unaltered. When power is restored, DST™ will proceed from the point at which the power failed
  • On power-up, the DST™ enters a battery pre-conditioning mode to ensure 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
Cat No Description Function/Information
DST-2CELL Suitable for all modules using 2 cell batteries -
DST-3CELL Suitable for all modules using 3 cell batteries -
DST-4CELL Suitable for all modules using 4 cell batteries -
DST-5CELL Suitable for all modules using 5 cell batteries -
DST-6CELL Suitable for all modules using 6 cell batteries -
DST-8CELL Suitable for all modules using 8 cell batteries -
DST-10CELL Suitable for all modules using 10cell batteries -
DST-12V Suitable for Tungsten lamps using 12V lead acid batteries -

Cat No

Description

Function/Information

DST-2CELL
Suitable for all modules using 2 cell batteries
-

Cat No

Description

Function/Information

DST-3CELL
Suitable for all modules using 3 cell batteries
-

Cat No

Description

Function/Information

DST-4CELL
Suitable for all modules using 4 cell batteries
-

Cat No

Description

Function/Information

DST-5CELL
Suitable for all modules using 5 cell batteries
-

Cat No

Description

Function/Information

DST-6CELL
Suitable for all modules using 6 cell batteries
-

Cat No

Description

Function/Information

DST-8CELL
Suitable for all modules using 8 cell batteries
-

Cat No

Description

Function/Information

DST-10CELL
Suitable for all modules using 10cell batteries
-

Cat No

Description

Function/Information

DST-12V
Suitable for Tungsten lamps using 12V lead acid batteries
-
DST™ standard testing programme conforms to the requirements of BS5266-1

Monthly 1 minute, functional test
6 Monthly 5 minute, duration test
Annually 3 hours, full rated duration test

DST™ LED status reports are made via a single tri-colour LED

Continuous green LED
Mains, battery, charger and previous test correct

Continuous red LED
Test in progress

Flashing amber LED (with optional sound alarm)*
Test fail alarm

Unlit LED
Mains failure or faulty battery

* If a fault is detected the sounder will enter a cycle where it emits an optional audible alarm and sound every 10 seconds until 4 hours have elapsed. If during this time the test is not reinitiated or the DST™ is not reset, the alarm cycle will be repeated. A single bleep will only be emitted during manually initiated tests.
Module Length 130mm x Width 50mm x Depth 30mm (Weight 80g)
Fixing Centres 120mm along centre line

Specification / Technical Information

Installation
The external test switch requires a 7mm mounting hole and needs to be accessible for initial programming, manual tests and clock resetting. The monitor LED bezel requires a 6.25mm mounting hole and should always be visible with the luminaire in its installed condition. The lamp sensor needs to be located adjacent to and pointing at the emergency lamp.

Wiring
The screw terminal connections to the DST™ unit are suitable for wires up to 1.5mm diameter. Wiring connections between the batteries and the DST™ unit need to be kept as short as possible to reduce Voltage drops.

Commissioning & Testing
24 hours after initial power-up, the DST™ enters a battery preconditioning phase. If the battery charge allows less than 5 minutes ofemergency operation a fault indication will occur. The test is repeated 24 hours later and if less than 1 hour of emergency operation occurs, a fault indication will be given. 60 hours after initial power up, the DST™ exits the battery-conditioning mode and commences the test regime with a 5 minute monthly test.

At any time a momentary push on the test switch will invoke a 12 second functional test, which is indicated by the monitoring LED changing to red, accompanied by a single bleep from the internal sounder (if enabled).

To reset the internal clock and thus restart the test timing cycle, the test button needs to be pushed and held in for at least 5 seconds. A successful clock reset is indicated by a double bleep from the sounder. Following a clock reset the DST™ unit will re-enter the battery preconditioning phase.

DST™ units incorporate a sounder, which can be muted by removing the black shorting link located below the test switch and sensor terminals.

Further technical information is available from our technical department at [email protected]

Quick Enquiry

or call us on +44 (0) 1922 745024

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