MAHA MAI ENGINEERS Manufacturer & Traders Of Battery Chargers,

DCDB’s, DC Power Supplies

MAHA MAI ENGINEERSB-187, Bhagat Singh Colony, Ballabhgarh

Haryana -121004Ph./Fax : 0129-2308832, Mobile: 09582323001

E-Mail : mmemax@mmaxpower.comWebsite : www.mmaxpower.com

Company Profile• We are the fast growing manufacturer, exporter and supplier of

a comprehensive array of electrical and electronic products. • Our vast assortment includes Battery Chargers, DCDB's, DC

Power Supplies, AMF & Safety Relays, and more. • Further, our entire range of products is designed and developed

as per the latest industry standards and norms to ensure optimum quality, durability, long functional life, and market leading prices.

• Moreover, our products are highly appreciated and widely demanded not only in domestic markets but all across the overseas markets.

Introduction To Company1. Thyristor Controlled three Phase and single Phase FC BCs2. IGBT Controlled three Phase and single Phase FC BCs3. SMPS based FCBCs4. CVCC type Battery Chargers (Primary Controlled)5. Microprocessor based controllers (MRM PROCOM)6. Regulated DC Power Supplies7. DC to AC Converters8. DC to DC Converters9. Switch Mode Power Supplies (SMPS)10. Electronic Hooter & Buzzer11. DC Distribution Boards12. DC Power Packs & Battery Banks

These Products are made according to the customer’s specific requirement (Custom made).Some of the designs are of regular production as they are widely used as an integral part of the panel by the industry.We make Chargers, Power supplies, DCDB’s etc. for standalone applications also.To produce as per your design, requirement and specification at a short notice is our specialty.We request to kindly register ourselves as a manufacture in your approved list and oblige.

Thanking You

For Maha Mai Engineers,

Iso Certificate

Micro Registration

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Vendor CodesSr. No. PARTY NAME REG. No.1. M/S AIR TEL LTD. DEL/OPEX/20222. M/S BAJAJ HINDUSTAN LTD. 10024003. M/S BCH ELECTRIC LTD. 304654. M/S BAGLA GROUP 130024025. M/S C&S LTD. 55736. M/S CUMMINS INDIA LTD. 1601337. M/S C&S HIMOINSA (P) LTD. M388. M/S C&S EFACES MV INDIA (P0) LTD. P000265009. M/S DELHI METRO RAIL CORP. LTD. 10235610. M/S GENPECT INDIA (P) LTD. 80093111. M/S GTP GTP/W.O./C-1/200612. M/S HONDA SIEL CARS INDIA LTD. 7M03513. M/S HONDA 1SM3314. M/S HINDALCO INDUSTRIES LTD. 104336315. M/S JAKSON LTD. 1000044716. M/S KAROLIRA LIGHTING (P) LTD. VM0000617. M/S LARSEN & TOUBRO LTD. 50024318. M/S NTN MANUFACTURING (I) (P) LTD. V00052719. M/S RELIANCE LTD. 29729520. M/S SIEMENS LTD. 5007605121. M/S STERLING & WILSON LTD. 10566522. M/S SCHNEIDER ELECTRIAL LTD. 1001750323. M/S SUBROS LTD. M03624. M/S SUDHIR GENSETS (P) LTD. PC-1,RMS.042625. M/S TTS SYSTEMATIX (P) LTD. 0041426. M/S VOLTAS LTD. 62513527. M/S YAMAHA INDIA (P) LTD. NM09128 M/S RAJIV GANDHI THERMAL POWER PLANT KHEDAR, HISAR Ch-10/RGTPP/TOE-2150

Technical Specification SMPS

1. INPUT VOLTAGE : 220V AC 1 Ph.+/- 20% (Wide range 90-280V).2. OUTPUT DC : 12V/24V,etc. +/- 1% .3. OUTPUT CURRENT : 8A/10A/16A etc.4. PROTECTIONS : OVER CHARGE,REVERSE BATTERY , H/V TRIP.5. INDICATIONS : Mains On, Boost/Float, REVERSE BATTERY.

Technical Specification Of CVCC

1. INPUT VOLTAGE : 220V AC 1Ph.+/- 20%2. OUTPUT DC : 12V/24V/48V/110V etc. +/- 1%3. OUTPUT CURRENT : 8A/10A/16A/20A/25A/30A etc.4. PROTECTIONS : OVER CHARGE, REVERSE BATTERY, H/V TRIP, SHORT

CIRCUIT.5. INDICATIONS : FLOAT & BOOST

Technical Specification Of Power Pack

1. INPUT VOLTAGE : 220V AC,110V AC 1PH.+/- 20%.2. OUTPUT DC : 12V/24V/48V/110V ETC. +/- 1%.3. OUTPUT CURRENT : 3A/5A/8A AND AS PER REQUIREMENT.4. BATTERY : SMF 7AH/18AH/22AH OR AS REQUIRED.5. INDICATIONS : MAINS ON/CHARGER ON-FAIL/DC ON .

Technical Specification Of Hooter

FEATURES1. BURDEN : ≤ 15mA AT NOMINAL INPUT2. AUDIO OUTPUT : 100dBA ± 5%3. PANEL CUT OUT SIZE : 92mmX92mm4. OVERALL DIMENSION : 96mmX96mmX70mm5. WEIGHT : 200gms. (Approx.)6. INPUT VOLTAGE : 12V DC and 24V DC (Single Unit) 110V

AC AND 220 V AC (Single Unit)7. Out-Put : 90DB

Technical Specification Of DC-DC Converters

1. 24V DC - 12VDC.2. 48V DC - 24VDC AND CUSTOMIZED DESIGNS.3. RACKMOUNTED POWER SUPPLIES.

Technical Specification Of FCBC

1. INPUT VOLTAGE : 220V AC 1PH. .+/- 20% & 415V AC 2PH./3PH.+/- 10%2. OUTPUT DC : 12V/24V/48V/110V/220V ETC. +/- 1%.3. OUTPUT CURRENT : 10A/16A/20A/25A/30A/40A/50A……150A4. PROTECTIONS : OVER CHARGE,REV. BATTERY.5. INDICATIONS :MAINS ON-FAIL,CHARGER ON-FAIL , AUTO /MANUAL/

BOOST/FLOAT, HIGH VOLTAGE CHARGER TRIP, LOW VOLTAGE LOAD TRIP etc.

6. AUDIO ALARMS : FOR FAULTS*.

Typical Cell Charging Characteristics

1. Typical Cell charging characteristics of the Charger is Shown in the table. The Cell is part of the 110V battery bank . Contain 55 cells.

2. Factory setting of the charger allows each Cell to be charged to 2.20Vdc, which corresponds to 121 Vdc terminal voltage. User can use an option up to 2.3Vdc per Cell, Which corresponds to 126.5Vdc battery terminal voltage.

3. Each charging stage can be seen on the table. Initial cell charging is achieved with constant current mode; witch limits the current such that it does not damage the cell plates. Normal charging time should be calculated as 10hr to 12hr. This requires typical charging current rating of 10% of the rated battery current capacity.

4. After the initial charging stage is completed, charge current starts to decrease as the cell voltage approaches 2.30Vdc. This takes approximately 60% of the charging period and is Necessary to equalize each Cell voltage within the battery. During this period, the charger ensures stable constant voltage across the battery terminals.

5. After the charging is completed, the battery keeps draining current from the charger in Order to compensate its internal resistive losses, called Self Discharging of the battery. This needs to be compensated in order to keep the battery charge at its highest condition.

Product Salient Features

1. Available in a wide range of standard and customized models, MMAX POWER Battery Chargers can be supplied in voltage outputs up outputs up to 500V DC and current outputs up to 500 Amps.

2. Conservative design and high quality standards ensure absolute reliability of the equipment and failsafe operation.

3. MMAX POWER chargers and DC systems find usage in variety of applications such as Process Control, telecommunications, Emergency Lighting, Switch Gear protection, Engine starting and Power Station Control, to mention a few.

4. Designed for low maintenance and remote operation, MMAX POWER Battery Charger can work for many years, without any special attention.

5. Soft start to minimize in - rush current into battery when unit is switched on Smoothing Filter Circuit to limit the AC ripple to required levels.

6. short circuit and Overload protection 7. Over voltage cutback keeps load and battery banks secure .8. Separate battery path current limiting keeps battery charging current lower.9. than the load current maintaining charging current constantly at required levels.10. functioning even when input phase reversal occurs (3ɸ). 11. Automatic Float/Boost changeover, based on current drawn by the battery.12. Cabinet fabricating using CNC M/C meets varying needs and requirements of industry 13. Class ''F'' insulation for magnetic and all magnetic are manufactured as per IS standards.

Float Cum Boost Charger

1. Float cum Boost charger is a combination of a float charger and a boost charger.2. During normal operation FCBC works as a float charger.3. On failure of mains supply battery starts supplying to the load.4. Once the main power restores FCBC switches to float or boost mode.5. based on the battery charging requirements.6. This configuration is most suitable where the load can withstand the Boost 7. voltage of the Battery Bank.

Float Charger & Boost Charger

1. The FC & BC has one Float charger & one Boost charger.2. Float charger (FC) is designed to supply the requirement of load & battery float charging currents and Boost Charger (BC) to supply the Boost charging of the Batteries.3. During normal operation FC will be in ON condition & BC will be in OFF condition.4. The FC & BC are connected with interlocking contactor.5. Whenever battery needs boost charging BC cuts in supplying the boost charging, at this stage FC will be isolated from battery & will supply the load.6. During momentary contactor changeover, battery supplies the load through tap cell.7. When FC fails, BC is automatically cut off and Battery starts supplying the load current.8. The maximum voltage available at the load terminals at any time is equal to that of float voltage.

Dual Float Cum Boost Charger

1. This system consists of two Float Cum Boost Chargers (FCBC1 & FCBC2).2. In this configuration both the chargers are designed to supply both Load and Battery Charging current.3. During normal operation FCBC-1 is in ON condition and FCBC-2 is OFF.4. In case of manual mode one FCBC supplies to load and another to battery, the FCBC connected to load will not go to boost mode.5. This unit is designed in such a way that if FCBC-1 fails, FCBC-2 comes in line automatically and takes care of both load as well as battery charging currents.

Float Charger & Float Cum Boost Charger

1. The FC & FCBC has one float charger & one float cum boost charger. 2. This charger employs power SCRs / Diodes in Full wave Half controlled/ Full wave Full Controlled.3. The Float Charger supplies both load and battery trickle charging currents while FCBC remains in OFF condition remotely. 4. Whenever battery needs boost charging, FC gets isolated from battery through contactor & supplies load whereas FCBC takes care of the boost charging of the battery. 5. Provision is available to operate the FCBC in Float mode to supply load when FC is failed. 6. At the time of mains failure the isolated contactor gets closed & battery gets connected to the load. 7. During contactor changeovers, continuity of DC power to load is maintained.

Hot Standby Redundant System

1. This System Consists of two Float Chargers and two Boost Chargers. 2. In this Configuration both the Chargers are designed to Supply Load and Battery Charging Current. 3. During normal operation FC1,BC1 is in ON Condition and FC2,BC2 is OFF.4. This Unit is Designed in such a way that if FC1,BC1 Fails FC2,BC2 comes in line automatically and takes care of both Load as well as Battery Charging Current

Parallel Redundant System Using Two Nos. FCBC + Two Batteries

1. This system consists of two Float Cum Boost Chargers (FCBC1 to FCBC2) and two Battery Bank. 2. In this Configuration each Charger Charger the respective Battery Bank and designed to supply the load. 3. During normal operation on FCBC1 Supplies to load. when FCBC1 fails then FCBC2 supplies to load. 4. One Battery provide Redundancy to the together.

Standard SpecificationsThe Battery chargers are manufactured to meet user specific requirements.AC Input with wide operational Range

Nominal Voltage 230 VAC or 415 VAC ± 10%, 3/4 wire or as per customer requirement

Frequency 50Hz ± 5%DC output with an adjustable RangeVoltage 12V / 24V / 48V / 110V / 220V / 460VDC

Current Range upto 2000A for 24VDC/upto 1000A for 48VDC and 1500A for 110V / 220V

Ripple <2% RMS

Regulation within ± 1% according to variation of input AC mains Supply

Rectifier Bridge Full wave half controlled (or) Full wave full controlled.

Efficiency Better than 80% at full load @ nominal AC input

Noise Level <60db for natural cooling and 75db for forced cooling

General

Protection

AC Input circuit breaker.DC Output circuit breaker.DC Over voltage cutback.Battery input fuses.Charger over load.Battery Charging Current limit.Short Circuit Protection.Built in DCDBIP - 54 to 20 as per IS : 2147

ContinueHigh voltage insulation 2.5KV for 1 minute with maximum leakage current of 5mAMeters Analog / Digital meters

Indications & Alarms

Input On, Charger On Float, Charger On Boost.DC Over Voltage, DC Under Voltage.AC supply fail, Charger fail.Rectifier fuse fail.DC / Battery Earth fault.Battery Fuse blown / Battery Isolated.Load on Battery / Battery DischargingIndication through either bright leds or multi point facia display

Switches & Control

Float Voltage POTBoost Voltage POTCharger ON / OFF switch.Manual / Auto select switch.Boost / Float select switch.ON / OFF switch for socket & Heater.

Humidity 0 to 95% RH Non condensingAltitude Upto 1000 MSL

Routine Test

Visual & Dimensional CheckInsulation Resistance testHigh Voltage testMeasurement of voltage regulationAnnunciation checksMeasurement of rippleCharger functional Checks

Battery Compatible with VRLA Battery / Non-VRLA Battery / Ni-Cad

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Paint RAL 7032 or as per customer requirements

Dimensions As per industrial standards or as per customer specific requirements

Cooling Natural or Forced

Temperature range of Operation 0 deg. C. to 50 deg. C.

Cable entry Bottom Entry or Top entry on customer request

Data SheetDATA SHEET:- Technical and Operating Data to be Completed by originator.Application of the equipment Input source voltage and frequency (with tolerance)

Maximum Output DC voltage across battery terminals

I. Float Voltage II. Boost Voltage Maximum load tolerance Voltage Maximum Battery charging current Normal load current Type of Battery Capacity of battery No. of battery cells

Type of configuration FCBC/FC&BC/FC&FCBC/DFCBC/Hot Standby/ Parallel Redundant System

Indication & Alarms Switches & Control Protection Efficiency Ripple Consultant Name Project Name Quantity

Contact………………………………………………………………………………………...………………………...

UsersMMAX POWER Customized conventional Chargers are employed in critical applications in a wide range of industries. Our products deliver efficient and reliable performance in the following sectors.

Clients

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