Method Statement for Installation of Central Battery System

The following procedure will be followed for installation of Central Battery system and can be customized as per the specific needs for different projects.

Emergency lighting battery system shall be of modular construction with all modules being plug in type encapsulated design.

The outgoing circuits shall be fed through changeover modules. Each module shall be capable of switching two separate circuits with maximum load of 3 amps or 20 number light fixtures connected to it.

Connection of luminaries of all switching modes shall be possible in each circuit.

Change over modules shall have no load and short circuit protection with independent fuses for mains and battery supply and shall have status indication for operation and failure.

Each panel shall have maintenance free sealed, lead acid batteries, with 10 years’ service life at 25 degree C, 120% capacity to manufacturer standard and with enough capacity to light up all connected lights for 3 hours duration with 100% light output on all connected luminaries and with sufficient number of converters forming 12 independent circuit suitable for connecting maximum 20 number of luminaire on each circuit.

Where the space requirement for the batteries does not permit the installation of same in standard enclosure, it shall be installed in a separate cabinet similar to the central battery panel cabinet.

Below is list of necessary equipment & tools for the installation of central battery system:

• Tool Box
• Pulling Spring
• Screw drivers
• Hack / Hole Saw
• Wire cutters
• Hammer
• Crimping tools
• Drilling Machine

Handling and Storage of Materials

On receipt of central battery and accessories at site, necessary precautions for unloading shifting and storage shall be adopted as below:

Upon arrival at site units shall be off loaded carefully using necessary manpower and required equipment in order to ensure there is no damage to equipment.

If the site is ready for installation the units shall be preferably shifted directly to the designated areas upon arrival at site.

On the floor units shall be stored in clean and dry place with adequate covering with tarpaulin sheets etc. in order to protect from deposition of dust and debris.

All equipment and accessories shall be checked in order to ensure that they are complying the approved material submittals in term of make, model, type and capacity etc.\

Any discrepancy or damage shall be notified immediately for further action and necessary claims etc.

Non complying material shall not be accepted and removed from the site.

Health and Safety Requirements

Persons engaged with Installation have to be skilled and have received proper and adequate training on safety and should be maintained in safe condition and the installation methods not to create danger either for the operator or for other persons or livestock.

Necessary PPE to be worn while working on energized circuits.

Ensure adequate lighting is provided in the working area at night time and if inside the building area to be well illuminated at all times.

Check and ensure service area/work area openings are provided with barricade, tape, safety nets and warning signage.

Ensure LOTO logout & tag out procedure to be followed and implemented during execution of work.

Emergency evacuation plan and procedure to be developed prior to start of Activity.

PTW to be applied and obtained to start work on the required area.

Calibrated Instruments only to be used.

Installation of Central Battery System

Ensure that all civil clearance is obtained prior to starting the installation activities.

Examine the area of installation for compliance with requirements of ventilation, temperature and humidity as per manufacturer recommendations.

Written confirmation to be taken from manufacturer/supplier that they have inspected the area and found suitable as per their requirements.

Concrete bases should be prepared as per the approved specifications and drawings.

Examine roughing-in for electrical connections to verify actual locations before installation.

Install central battery system panel and components on concrete base and attach the components by bolting.

Check that there are no physical damages for the panels/ devices.

Place and secure anchorage devices.

Use supported equipment manufacturer’s setting drawings, templates, diagrams, instructions, and directions furnished with items to be embedded.

Maintain minimum clearance and work space as equipment according to manufacturer’s written instructions, and as per the local authority having jurisdiction or as per electricity wiring installation regulations.

Insert the batteries in the cabinets as shown in the manufacturer installation instructions provided with the delivery.

Attach the batteries using the connectors and place protective caps over the pins.

For fitting the batteries in two or more battery cabinets, the side flange plates must be removed to enable the wiring.

The battery cabinets must be connected using the provided earthing cables.

Interconnect all the system components.

Make connections to supply and load a circuit according to manufacturer’s wiring diagrams, unless otherwise indicated.

Ground all the equipment according to specifications.

Identify equipment and components as required.

Make sure that all the devices are in the looping connection in the panel.

Check that all the circuits are identified/labelled and marked in the panel.

Make sure that incoming power supply is connected to the panel.

Check that all emergency lighting circuits cabling connections are completed.

Specification Requirements for Battery System Installation

The emergency light shall be connected such that in case of power failure in any of the area, the emergency light installed in that area shall be energized.

All of the system installation work shall be supervised by the specialist supplier. However, the necessary containment and electrical power to support the emergency lighting system shall be the responsibility of the MEP Contractor.

Wiring of the emergency light shall be carried out using fire resistant FP 200 Cable.

The central battery system shall integrate with other building systems as follows:

FIRE ALARM SYSTEM The central battery system shall interface with the fire alarm system and will be programmed as per consultant/client requirement.

LIGHTING CONTROL SYSTEM The central battery system shall interface with the lighting management system and shall be Programmed to bring all the emergency lights to full output in case of a power outage.

Sub-Circuit Monitoring & Dimming Interface:

Where indicated final switched / dimmed lighting circuits shall be monitored for operation & when failure is detected in supply voltage the circuit shall be automatically transferred from normal supply to emergency supply.

Sub Circuit monitoring shall be provided as per the final site requirements.

Any power failure within a circuit or in a particular area or in a room shall turn the emergency lighting on for the respective zone only.

The supplier shall co-ordinate with the MEP contractor for the necessary sub-circuit monitoring function.

All of the normal fittings converted for emergency use shall be fitted with an addressable monitoring module to enable the luminaire to communicate with the System controllers.

These address modules shall be connected to the High Frequency Electronic ballasts supplied by light fitting suppliers.

The compatibility of the Emergency Lighting system and the supplied HF electronic control gears shall be ensured by the MEP contractor.

Where dedicated Emergency lights are used, the fitting shall be complete with built in addressable HF electronic control gear.

The control gears shall be latest technology with a power factor correction of at least 0.9 upwards.

Battery Charger Installation Requirements

The plug-in-type battery charger should be high efficiency temperature controlled charger, working to IU characteristics.

It will have built in deep discharge protection for long Battery life.

Charger will be suitable for fast recharging based on Battery status and time controlled trickle charging current.

It will supervise the battery status such as low/high battery block voltage, failures within charging circuit and Relay the faults to control module.

The charger shall be designed for a 90% recharge of a fully discharged battery set within 20 hours.

It shall be complete with the following:

a) Earth leakage monitoring

b) LED indication for ‘operation’, charger ON, Booster ON, Mains Operation, Battery Capacity 10 %, 50%, 100% Charging failure, Insulation fault

c) Push button to simulate earth leakage failures.

Each panel shall be provided with a non-switched spur outlet next to the panel.