Unique Design & Easy Access

cbu_case

Attractive Finish & Easy Maintenance

UNIQUE ENCLOSURE DESIGNLOW MAINTENANCE
SEGREGATED BATTERYWIDE RANGE OF BATTERY OPTIONS
RECESSED CONTROLSMAINTAINED/NON-MAINTAINED UNITS
RELIABLE CIRCUITRYAC/DC and DC/DC UNITS AVAILABLE

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

schematic_maintained_01

Maintained System (Charge Rate up to 5 Amps)

schematic_maintained_02

Maintained System (Charge Rate above 5 Amps)

schematic_nonmaintained_03

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

schematic_nonmaintained_04

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

Cabinet Ref.HeightLengthDepth
11000600440
21250800540
312501000640
4 BATTERYTBATBATBA
4 CHARGERTBATBATBA

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:
50 – Is the system nominal voltage
M3 – Is the category signifying maintained 3 hour
840 – Is the system rated wattage
AV – Represents ammeter and voltmeter
LV – Represents low voltage disconnect feature
2DB – Indicates the number of outputs
S – Represents the battery type

Battery Types

S – Valve Regulated Lead Acid
F – Flat Plate Lead Acid
P – Plante Lead Acid
N – Nickle Cadmium Alkaline
Also available on request Valve Regulated batteries fully to BS6290 Part 4 Ref B.

VALVE REGULATED LEAD ACID

(System Nominal 24 Volts)

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

121050610420681

Nominal No. CellsMax Watts 1hrMax Watts 2hrMax Watts 3hrBattery Capacity A/hrCabinet Ref No.
12340195135221
12480280190301
12750430300461
121350790545841
121550925635981
12192511207801201

VALVE REGULATED LEAD ACID

(System Nominal 50 Volts)

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

Nominal No. CellsMax Watts 1hrMax Watts 2hrMax Watts 3hrBattery Capacity A/hrCabinet Ref No.
24680390270221
24960560380301
241500860600461
2421001220840681
24270015801090842
24315018501270982
243850225015601202
244700280019601523

VALVE REGULATED LEAD ACID

(System Nominal 110 Volts)

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

Nominal No. CellsMax Watts 1hrMax Watts 2hrMax Watts 3hrBattery Capacity A/hrCabinet Ref No.
541500890610222
5421501250870302
54335019501350462
54480027501900683
54610035502450843
54715041502850984
548700505035001204

FLAT PLATE LEAD ACID

(System Nominal 24 Volts)

12260160115181

Nominal No. CellsMax Watts 1hrMax Watts 2hrMax Watts 3hrBattery Capacity A/hrCabinet Ref No.
12535320235361
12800480355541
121000650470721
121325800590902
1216009507001082
12190011508401282

FLAT PLATE LEAD ACID

(System Nominal 50 Volts)

Nominal No. CellsMax Watts 1hrMax Watts 2hrMax Watts 3hrBattery Capacity A/hrCabinet Ref No.
24520320230181
241070640470361
241600950700543
2420001300940723
24265016001180903
243200190014001084
243800230016751284
244750287521001604

FLAT PLATE LEAD ACID

(System Nominal 110 Volts)

Nominal No. CellsMax Watts 1hrMax Watts 2hrMax Watts 3hrBattery Capacity A/hrCabinet Ref No.
541170720530183
54240014501050363
54360021001600542+2
54450029002100722+2
54590036002650902+3
547200430032001082+3
548500517537501282+3

HIGH PERFORMANCE PLANTE LEAD ACID

(System Nominal 24 Volts)

Nominal No. CellsMax Watts 1hrMax Watts 2hrMax Watts 3hrBattery Capacity A/hrCabinet Ref No.
1220013095151
12400260190301
12600400285453
12800520380603
121000660475753
1214404806401003
12180010507901254

HIGH PERFORMANCE PLANTE LEAD ACID

(System Nominal 50 Volts)

Nominal No. CellsMax Watts 1hrMax Watts 2hrMax Watts 3hrBattery Capacity A/hrCabinet Ref No.
24400260190152
24800520380303
241200800570454
2416001040750604
2420001320950752+2
242875167512751002+2
243600210015751202+2
244300250019001502+2

HIGH PERFORMANCE PLANTE LEAD ACID

(System Nominal 110 Volts)

Nominal No. CellsMax Watts 1hrMax Watts 2hrMax Watts 3hrBattery Capacity A/hrCabinet Ref No.
54970575430154
5419401170855302+2
54290018001250453+3
54397523401700603+3
54480029502100752+3+3
546450375028501002+3+3
548100472535501252+4+4

NICKEL CADMIUM ALKALINE

(System Nominal 24 Volts)

Nominal No. CellsMax Watts 1hrMax Watts 2hrMax Watts 3hrBattery Capacity A/hrCabinet Ref No.
2017011580111
20300208150201
20400275200261
20510350250331
20680460330441
20920630450611
201100750525731

NICKEL CADMIUM ALKALINE

(System Nominal 50 Volts)

Nominal No. CellsMax Watts 1hrMax Watts 2hrMax Watts 3hrBattery Capacity A/hrCabinet Ref No.
40340230160111
40600410300201
40800550400261
401020700500331
401360920660442
4018401260900612
40220015001050733
40225017401240833

NICKEL CADMIUM ALKALINE

(System Nominal 110 Volts)

Nominal No. CellsMax Watts 1hrMax Watts 2hrMax Watts 3hrBattery Capacity A/hrCabinet Ref No.
90750520360113
901375950650203
9018501275900263
90230015751100333
90305020701500442+2
90420028252050612+2
90500033752400732+2

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

BSBS764 Contactor
EFEarth Fault Monitor
ETEngineers Test Key
FAFire Alarm Relay
LVLow Voltage Disconnect
NWNight Watchman’s Switch
PFPhase Fail Relays
TMTime Switch
XDDouble Pole Fused Outputs
Others on Request

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

ProtectionAnti-surge fuses to input, and charger. HRC fuses to output. Low Voltage Disconnect.BatterySealed lead acid 10 year nominal.

Input230volts 1 phase 50Hz.
Output24volts.
ChargerConstant voltage.
IndicatorsMains healthy Neon and charge fail L.E.D.
AlarmsVolt-free charge fail relay contacts.
EnclosureWall mounting with lockable hinged front door and top gland plate. Finished in polyester epoxy resin grey RAL-7032 textured.

 

BASIC REF1 HOUR WATTS3 HOUR WATTSCAB REF
15/2419586A
24/24313138B
38/24495218B
48/24620275C
65/24720373D

CABINET SIZES

RefHeight mmWidth mmDepth mm
A500400200
B600500250
C700500250
D800600250

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.

Read about emergency central battery units.