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Summary of Contents for Kentec Electronics K25800 Series
- Page 1 K25800 & KD25800 Series Fire Alarm Power Supplies Installation, Commissioning and Operating Manual Man-1152 Issue 05 July 2016 Man-1152_K25800_series_Power_Supply_Manual_05 Page 1 of 18 This denotes variants tested & approved by the LPCB...
- Page 2 Section Page 1. General ..........................3 2. Power Requirements ....................... 3 2.1 Input/Output Electrical Ratings ........................ 3 2.2 Fuse Ratings ............................3 2.3 Batteries ............................... 3 3. Installation ..........................3 3.1 Environmental Considerations ......................... 3 ...
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Page 3: General
1. General The KD25800 and K25800 series are combined power supply and battery chargers designed to be used for fire alarm control and indicating equipment complying with EN54-2 and EN54-4. To satisfy the requirement of clause 6.4 of EN54-4, for fire alarm Power Supply Equipment mounted in a separate... -
Page 4: Mounting
3.2 Mounting The unit should be mounted on a dry, flat surface and in a level position such that the enclosure is not distorted. Screws or bolts of a minimum of 5mm diameter and suitable 40mm long wall fixings must be used to mount the enclosure in all four mounting positions. -
Page 5: Connecting To The Mains Input
3.3 Connecting to the mains Input A minimum cable size of 1.0mm² must be used. Maximum cable size is 4.0mm². The mains cable should be rated at 250V and fused via a 5A anti-surge fuse. Fit the mains cable via a suitable 94HB flame rated cable gland via a knockout close to the power supply unit. Connect the Neutral of the mains power supply to the terminal marked N, connect the Live of the mains power supply to the terminal marked L and connect the earth to the terminal marked E. -
Page 6: Connecting To The Outputs
Ribbon cable connections DISCON When supplying high load currents such as the K25800 series of power supplies are capable of, volt drop in cables should be considered. Larger cables have less volt drop, so if long cables are being used to supply high currents then these should be larger such as 2.5mm... -
Page 7: Load Connections (Ribbon Cable)
4.2 Load Connections (Ribbon Cable) An additional method of connecting to the power supply is via a 14-way ribbon cable. The ribbon cable must not leave the enclosure A standard latching ribbon cable header is provided on the board, which may be used to connect to the load, and fault signals. -
Page 8: Load Connections (With Optional Dual Transmission Path Pcb Fitted)
4.3 Load connections (with optional dual transmission path PCB fitted) When the power supply unit is being used to supply power to fire alarm control and indicating equipment, to comply with the requirements of EN54-4, there must be two transmission paths from the power supply to the control panel in order that a short or open circuit in one transmission path will enable the control panel to be supplied with power from the other. -
Page 9: Fault Output Contact Connections
4.4 Fault output contact connections A volt free contact rated at 30V DC and 1 Amp (GEN FLT) is available for connection to other systems. This contact will operate upon any of the fault conditions listed in section 4 as well as total power failure. The contact positions on the common fault relay terminals shown are with mains and battery connected and with no fault conditions on the power supply. -
Page 10: Dip Switch Settings
5. DIP switch settings In order to correctly charge the batteries, the power supply must be matched to the manufacturer type and size of batteries that are connected to it. This is done by setting the DIP switch located next to the battery connection. Switch 4 defines the battery manufacturer (Yuasa or Powersonic). -
Page 11: Indicators
6. Indicators The diagnostic indicators visible along the edge of the power supply indicate the status of the unit as follows: AC Normal – Mains power is connected. Heartbeat (flashing slowly) – The processor is functioning normally. DC Out on – The 24V DC output is supplying power to the load. General fault –... -
Page 12: Standby Batteries
Batteries with a manufacturing date older than 6 months are not recommended for use with this equipment. Sealed lead acid batteries can liberate hydrogen during normal use. The KD25800 and K25800 series of power supplies have adequate ventilation to allow this hydrogen to disperse normally and safely therefore additional sealing or mounting inside a sealed enclosure is prohibited. -
Page 13: Power Supply Unit Dimensional Drawings
10. Power Supply Unit Dimensional Drawings Man-1152_K25800_series_Power_Supply_Manual_05 Page 13 of 18 This denotes variants tested & approved by the LPCB... - Page 14 385mm 110mm 520mm POWER ON POWER FAULT K25800 M3 AND KD25800 M3 POWER ON POWER FAULT Man-1152_K25800_series_Power_Supply_Manual_05 Page 14 of 18 This denotes variants tested & approved by the LPCB...
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Page 15: Temperature Sensor Mounting
11. Temperature Sensor Mounting To achieve correct battery charging temperature compensation (essential for correct maintenance of batteries) the flying lead thermistor must be affixed to one of the batteries using Scotch 27 Glass Cloth Electrical Tape or equivalent. A suitable piece of this tape is supplied holding the temperature sensor to the power supply chassis. KD25800M3, K25800M3, KD25800D3 and K25800D3 sensor mounting position. - Page 16 KD2580014 and K2580015 sensor mounting position. Fit temperature sensor here RP SM2A BATTERY BATTERY Man-1152_K25800_series_Power_Supply_Manual_05 Page 16 of 18 This denotes variants tested & approved by the LPCB...
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Page 17: Cabling
12. Cabling Only fire rated and shielded cable should be used. Note: For LPCB approved installations use only FP200*, 1.5mm 2 core cable. Mains The Mains cable should be a minimum cable size of 1mm² and rated at 250V. A suitable primary disconnecting device must be provided in the end use application. - Page 18 Fit supplied ferrites by looping the cores of (not the outer sheath) the load output cables and cable connected to fault contact once through the ferrite as shown below. For versions fitted with dual power output For versions not fitted with dual power output LOAD FAULT MAINS IN...
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