Central Battery System Spec - Jeddah



CENTRAL BATTERY SYSTEM SPECIFICATION

1.0 GENERAL

The emergency lighting system & all its components shall be designed & installed to meet the Local authority requirements & the respective EN 50172 and the system designed in compliance with EN50171, EN50272-2, EN50172, and EN1838 standards applicable to this project.

Emergency lighting shall fulfill the following functions,

Illuminate the escape routes

Indicate the escape route direction clearly

Provide the Exit signs on all the Exits

Permit operations concerned with safety measures & to shut down the hazardous process

Each emergency supply panel shall be used for supply automatic testing and monitoring of up to 32 of Escape route, EXIT and safety luminaires on each circuit.

Panel Shall automatically update new lights after new lamps are installed

The panel shall have following electrical characteristics:

Input Voltage : 220-240 AC 1Ph or 3 Ph

Output mains : 220-240 V AC

Output Emergency : 216 V DC

Emergency Duration : Three (3) hours

The number of emergency lighting system panels shall be appropriately decided for maximum reliability to ensure continued emergency supply and failure of one panel shall not result in total emergency lighting supply failure for the entire building.

The system supplier shall be authorized distributor of the equipment, maintaining a local staff of factory-trained personnel for Engineering assistance, installation and maintenance of such equipment in compliance with the requirements of the above mentioned EN standards.

2. SYSTEM DESCRIPTION

2.1 Mechanical Construction

The panels enclosure shall be made of sheet steel housing IP20 with separate rack or enclosures for batteries to maintain the safety distance of the battery according to EN50272-2. Colour finish of the panel will be white for housing. Panel shall be suitable for surface wall mounting. Panel shall have a screw fitted front door of lift away type, with front facia for status indication.

Batteries to be mounted on suitable rack/ enclosure for easy maintenance of the batteries.

2. ELECTRICAL CONSTRUCTION

2.2.1 Changeover Module

System shall be built up in a modular format with all units being plug –in –type change over modules. Each changeover module shall have 8 outputs of min 250W each or 2 outputs of max 1400W each. It shall be possible to connect each output circuit as maintained or non-maintained without any programming required. Changeover module shall have integrated transceiver circuit, which allows up to 32 addressable luminaires in each circuit. Each changeover module communicates with the control module through the internal data bus. All out going circuit shall be protected with independent fuses. The unit shall not have a floating DC circuit and shall not require separate changeover relays for both L/DC(+) and N/DC(-).

2.2.2 Battery Charger

Charger module shall be controlled by the micro processor of the control module. There shall be automatic boost charge, cyclic charge and trickle charge facility for full battery capacity use and maximum battery life. The charger shall have built-in deep discharge protection for long battery life. There shall be a DIP-switch for setting the maximum charging current, according to the battery capacity.

The system shall have temperature sensor at the battery for automatic charging voltage adjustment. Fuse protection shall be provided. The charger shall be designed for a 80% recharge of a fully discharged battery within 12 hours, as required by EN 50171.

2.2.3 Control Module

Control Module shall have the following LED indications:

Mains Operation,

Battery Operation,

Battery Overvoltage,

Battery Under voltage,

Deep Discharge,

Recharge,

Current Limit,

Battery Fault,

Internal Fault,

Battery Test Running,

Luminaire Test Running,

Internal Fault, External Fault,

Circuit Number and Luminaire Number.

There shall be an own LED indicator for each luminaire in the same circuit providing simultaneous status information of the luminaires by a single view with corresponding group (circuit) number indicating on the segment display.

Control Module shall have the following Volt free contact:

Internal Fault

Battery mode operation

External Fault

The control module of the panel shall have three main functions:

- monitor and control all test cycles and functions.

- Indicate every status of the system and the connected luminaire

- communicate with the addressable electronic ballast on every slave luminaire.

Each panel shall have push buttons for Battery Test, Luminaire Test and Fault Alarm Reset. The panel shall have the option of an integrated printer to be fitted on it.

The emergency supply panel shall supervise the battery status such as Battery Over voltage / Battery Under voltage. Charging failure shall be indicated as an Internal fault by an indicator LED and potential free relay contact.

The unit shall be fitted with a deep discharge protection circuit, which has two operation phases: When in battery mode the battery voltage decreases to 195V, a preliminary deep discharge alarm shall be given. When the battery voltage decreases to 173V, the load shall be disconnected. The circuit shall allow the battery to increase its voltage without switching the load ON again, thus avoiding detrimental full discharge. The panel shall automatically return to normal operation, once the mains supply recovers.

2.2.4 Exit Light Flashing Operation

The maintained Exit lights shall be able to operate in Flashing Mode (Momentary ON/OFF). As per NFPA 101 7.10.5.2.2: Illumination for signs shall be permitted to flash on and off upon activation of the fire alarm system. Based on the control signal from Fire Alarm System or actuating device, the Exit lights shall flash to draw the attention towards the Escape Route in case of a Zone Fire Alarm or similar situation.

3.0 Local Controllers

Local controllers should be connected to every circuit to monitor local normal lighting DBs and switch on the non-maintained luminaries during DB supply failure. There shall be no separate data cabling required between the local controllers, luminaries and panels. All necessary data transfer shall take place through the standard power supply cabling of the luminaires. Continuous monitoring of the lighting sub distribution panels shall be made by Local Controller units, each having 3-phase monitoring input. Each circuit shall have its own Local Controller so that a possible failure of a single controller does not affect the other circuits. The non-maintained luminaires at sub distribution panel area shall be lit during a local supply failure. However the emergency supply panel shall not switch to battery use as long as its own mains supply is available. The Local Controllers should comply to EN 61347-2-11:2001 in conjunction with EN 61347-1:2001.

4.0 Switch Controllers

Switch controller modules shall be provided to allow emergency luminaires to be used for general lighting purpose with ON & OFF switch operations via switches, lighting control system, etc where necessary. Switch controllers shall be fully compatible with the Local Controllers

5.0 CENTRAL MONITORING

The System shall have central monitoring software and the entire emergency lighting system shall be controlled and monitored from a single point using standard personal computer and simultaneously, the system shall also have a single BACnet gateway for interface with Building management system.

Following functions shall be done by using the Central monitoring PC.

- Luminaire test of all or selected emergency supply panels.

- Battery test of all or selected emergency supply panels.

6.0 Slave Emergency & Exit Luminaire LED Type

Emergency luminaires shall be non-maintained type slave luminaires with long life and high efficiency LED light source and self-testing addressable electronics, which can communicate with central control module. LEDs shall be of surface mounted type with proper heat sink. It is not allowed to use free standing LEDs where the heat is conducted only through the connection leads. Electronics shall supply the LED(s) with constant current, which shall be regulated against supply voltage variations. With the constant current power supply feature, the light output should be maintained more than 90% till the end of three hours battery back up. The indication of the correct operation shall rely on the actual light output of the LED(s), so that an excessive degradation of the light output is also detected. Manufacturer is demanded to show a proof that the specified light output levels are maintained for minimum of 7 years. It shall be possible to connect both maintained and non-maintained luminaires to the same output circuit.

The luminaire shall have sheet steel or plastic polycarbonate housing and plastic polycarbonate or PMMA lens for even light distribution.

The supply connector shall be arranged to provide a possibility for both ingoing and outgoing cable to enable looped cabling between the luminaires without separate junction boxes.

- It shall be maintained type luminaire

- Minimum viewing distance 22 meters

- shall be built according to EN60598

- shall have Constant power output high frequency electronic control gear

- All exit luminaire shall be powered from central battery unit

- The luminaire shall have sheet steel or plastic polycarbonate housing

- Protection class I, ingress protection IP20.

- Supply voltage 220 V/240 V AC/DC

- EMC protection according to EN 55015

6.1 Plant Room / Staircase / Car Park areas salve Emergency & Exit luminaire

Same as exit & safety luminaire except protection Class IP-44

7. Address Modules

All general light fittings converted into emergency lights shall be connected to the manufacturer’s address modules up to 200 watts. The address modules should comply to EN 61347-2-11:2001 in conjunction with EN 61347-1:2001. The general luminaries must be fitted with electronic ballast with the following features; It must be able to operate with both AC and DC voltage, It must shut itself off in an event of a lamp failure, input current in shut off mode must be less than 10mA & must have Constant power output high frequency electronic control gear/ transformer. The CBS manufacturer should provide electronic ballast with the above features on request.

8. Batteries

The batteries shall be maintenance free VRLA sealed lead acid gas recombination type with a minimum design life of 10 years at prevailing ambient temperature.

They shall have extremely low gas generation, low self-discharge and have permanently sealed pressure release vents.

Care shall be taken to store/install these batteries in areas, which are free of prolonged extreme temperatures.

The batteries shall be sized to power complete system for 3 hours following mains failure at 100% light output of all emergency lamps or 75% on slave luminaries.

9.0 Wiring

Wiring between the central battery and luminaires shall be carried out in fire rated cable of suitable size as per the local authority requirement.

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