Standby Power Equipment Data

Unique Design & Easy Access

Attractive Finish & Easy Maintenance

Description

A central battery system consists of a bank of cells, either Lead Acid or Nickel Cadmium, with an automatic charger, changeover contactor and external luminaires. ADMALITE Central Battery Units are manufactured to the highest standards using quality components to provide long and trouble free service. Our cubicles are of a unique design and allow unequalled access for both the installer and the maintenance engineer. All cubicles are made from substantial gauge sheet steel, folded and welded before being primed and coated with a quality paint finish. Battery and charger have separate compartments and access to both is via lockable covers. The charging chassis is removable in case of major modification.

General Schematic Diagrams

Maintained System (Charge Rate up to 5 Amps)

Maintained System (Charge Rate above 5 Amps)

Non-Maintained System (Charge Rate up to 5 Amps)

Non-Maintained System (Charge Rate above 5 Amps)

Input Voltage

220/240v 50Hz Single Phase, or 380/415v 50Hz Three Phase with failure detection relays fitted.

Charger

Thyristor controlled constant voltage type with electronic current limit and optional boost facility. Protected against short circuit, low battery voltage and reverse battery connection.

Recharge Time

Chargers rated to replace 90% of discharged capacity within 12 hours and full recharge within 24 hours.

Minimum Battery Voltage

The battery voltage at the end of a rated discharge shall not be les than 85% of the nominal system voltage as defined in BS5266.

Fuses

Industrial H.R.C. complying with the general requirements of BS88 Part 2 : 1975.

Contactors

To the relevant requirements of BS5424 as standard but BS764 types available on request.

Transformers

Double wound with either Split Bobbin or Earth Screen and complying generally with the requirements of BS171.

Indicators

Mains Healthy Neon
Charge Fail L.E.D.
Charge Ammeter
Battery Voltmeter
Others on request.

Cabinets

Fabricated from a minimum of 1.6mm mild steel, folded and welded for strength and rigidity. Metalwork is finished in stove enamel powder paint RAL7032 grey. The cabinets are of a unique design affording unequalled access for installation and maintenance.

Dimensions

Model Number

The model number contains abbreviations of all the major features of the unit.
Example:
50volt system with valve regulated sealed lead acid battery to operate in the maintained mode supporting a load of 840 watts for 3 hours upon mains failure and complete with two double pole fused outputs.
Model Code: 50M3/840/AV/LV/2DB/S
Where:

Battery Types

VALVE REGULATED LEAD ACID
(System Nominal 24 Volts)

DERATE MAXIMUM LOAD BY 20% FOR SPECIFIED DUTY THROUGHOUT BATTERY LIFE

VALVE REGULATED LEAD ACID
(System Nominal 50 Volts)

DERATE MAXIMUM LOAD BY 20% FOR SPECIFIED DUTY THROUGHOUT BATTERY LIFE

VALVE REGULATED LEAD ACID
(System Nominal 110 Volts)

DERATE MAXIMUM LOAD BY 20% FOR SPECIFIED DUTY THROUGHOUT BATTERY LIFE

FLAT PLATE LEAD ACID
(System Nominal 24 Volts)

FLAT PLATE LEAD ACID
(System Nominal 50 Volts)

FLAT PLATE LEAD ACID
(System Nominal 110 Volts)

HIGH PERFORMANCE PLANTE LEAD ACID
(System Nominal 24 Volts)

HIGH PERFORMANCE PLANTE LEAD ACID
(System Nominal 50 Volts)

HIGH PERFORMANCE PLANTE LEAD ACID
(System Nominal 110 Volts)

NICKEL CADMIUM ALKALINE
(System Nominal 24 Volts)

NICKEL CADMIUM ALKALINE
(System Nominal 50 Volts)

NICKEL CADMIUM ALKALINE
(System Nominal 110 Volts)

BATTERY TYPES

Valve Regulated Lead Acid
These are state of the art in sealed lead acid technology, using a design in which the acid is immobilised in a sponge-like material. The electrolyte remains there throughout the charge and discharge cycles. During the life of the battery there is minimal loss through gassing. Service life up to 10 years.

Flat Plate Lead Acid
Low antimony pasted plate cells in translucent plastic cases, which make it easy to check the electrolyte level. The cells have a very low internal resistance, which results in very good regulation, especially at higher rates of discharge. A large electrolyte reservoir enables greater periods between topping up. This type of cell has a reasonable neglect tolerance and is economically priced. Service life 12 to 15 years.

Plante Lead Acid
These are high performance cells, offering ultra reliable trouble free service when well maintained. The cell casings are clear plastic making it easy to see the electrolyte and the reservoir is large to limit the maintenance required. The cells retain 100% capacity throughout their life and give excellent performance at high or low levels of discharge. Service life up to 25 years.

Nickel Cadmium Alkaline
These cells are extremely robust and will tolerate arduous operating conditions and both electrical and mechanical abuse. The cells have translucent cases, which make it easy to check the electrolyte level. Deep discharge has no adverse effect on the cell capacity and they can be left in a discharged condition without damage, unlike lead acid cells. Service life up to 25 years.

OPTIONAL EXTRAS

HEALTH AND SAFETY

When lead acid and nickel cadmium wet cells are being charged they give off a potentially explosive mixture of oxygen and hydrogen. Always ensure adequate ventilation when installing equipment in confined areas and display signs warning against smoking and naked flames. Remember the battery is electrically live at all times and cannot be isolated in the conventional sense, therefore precautions should be taken to restrict unauthorised access to battery rooms and cabinets.

MINI RANGE OF CBU'S

A range of wall mounting, maintained and non-maintained central battery units for smaller premises.

SPECIFICATION

CABINET SIZES

MODEL REFERENCE

The basic reference shown in the table above gives battery capacity and voltage, a model reference number will show the voltage, category, rated wattage, battery type suffix and idents for any optional extras fitted.
e.g. 24M3/275/S This is a standard 3 hour maintained unit rated at 275 watts.