Archives

DEFENSE GRADE UPS

Three Phase UPS:

Input voltage: 180V AC – 275V AC
Frequency range: 40 – 70Hz
Output Voltage: 210/230/240
Power Rating: 10kVA – 100kVA
Interface Standard: Rs232
Operating Temp.: -20 °C to +55 °C
Crest Ratio: 3:1
Efficiency: >90%
Note: Due to continuous development – dimensions, layout, configuration and specifications are subject to change without notice.

Environmental Stress Screening (ESS)

The product components are susceptible to stress inflicted on them by the environment in which they operate, we shall stimulate these conditions in our computer controlled environmental stress chambers where the components or product as a whole will be subjected to Thermal Cycles (constant or cyclic temperatures and with humidity).

We shall conduct these test with a prototype product at initial stage of production to protect the product from any environmental inflicted stress. In addition, we can provide failure trend analysis pertaining to environment stress to aid in product refinement.

Few of our ESS capabilities are :-

a) Environmental Stress Screening (Thermal, Vibration, Corrosive etc…)
b) Performance testing
c) Endurance / Durability and Electrical testing
d) Development samples validation
e) Ability to coordinate validation tests viz., Salt Spray Test etc. in collaboration with accredited external Test Laboratories.

Interactive Electronic Technical Manual (IETM)

Advantages:

IETM allow the user to locate required information faster and more easily than is possible with a paper manual.
IETM, when designed to clearly defined standard ,are easier to comprehend and more specifically matched to the system configuration under diagnosis.

Powerful interactive troubleshooting procedures, not possible with paper technical manuals, can be made available using the intelligent features of IETM display device.

IETM would be linked together with a single large database augmented with modules of video,sound,animation and interactive courseware.

IETM are standard generalised Markup language and Hyper Text markup language.

Classes of IETM :-

  • Class 1:Electonically Index Pages
  • Class 2:Electonically Scrolling documents
  • Class 3:Electonically Structured IETM
  • Class 4:Hierarchically Structured IETM

Characteristics of IETM:-

  • Display
  • Functionality
  • Data Format

Cable Wiring & Harness

Some products require complex wiring systems where cables would run for kilometers if stretched fully, our CWH shall bind all wires and cables in a single harness where possible and secure them from the effects of vibration , moisture and abrasion. We fit protective sleeves , conduits and flame retardant sleeves as required to prevent any sort of electrical fires. Upon completion of wiring kit it is tested using test boards.

On successful completion and testing , we shall train the user on its operational characteristic and provide supporting documents on wiring and materials used for easy reference during time of support or ordering spares.

Reliability Analysis

Reliability Analysis will cover following areas:

1. Mean Time Between Failure(MTBF) – It is one of the most common analyses done for a product, Reliability prediction can be done for Electronics/Hardware components, Mechanical equipment and software as well.

2. Mean Time To Repair (MTTR) – Will establish workshop time for an individual component
i.e time taken for a component to be services/overhauled and become fit for service again.

3. Failure Mode Effective Critical Analysis (FMECA) is very useful tool to identify potential failure modes (hardware design deficiencies) and knowing their effects on the system , the shall help improve design and safety . It studies a particular system and determine how that system can be modified to improve overall reliability and to avoid failures.

4. Reliability Block Diagram (RBD) RBDs are used to calculate the Reliability, Availability and maintainability on large and complex systems they are accurate and resemble real time scenarios. It can also be extended to find important factors of each block in the system and optimum allocation of reliability to attain system’s reliability target.

5. Fault Tree Analysis (FTA) – It shall isolate root cause of any fault and suggest corrective action that will prevent the failure from re-occurring.

Physical Analysis ? Structural & CFD

Dynamic analysis ? Modal analysis, transient analysis , random vibration analysis ? We find the frequency and mode shapes , any sudden shock or impact on the frame and areas on chassis where random vibration will occur . We help in ensuring the structure of the product matches it?s designated operational conditions and shall withstand a long life

CFD ? Computational Fluid dynamics,CFD analysis and simulation services will show how designs shall perform under real-world conditions, with an insights into it’s operational behavior, and aid in opportunities for design optimization.With real-world engineering experience across various verticals we easily understand design and cost-constraints during product development.
CFD analysis will help teams to identify problems before products go to market, thereby reducing risks and avoiding costly warranty problems.

Static Frequency Converter (SFC)

STATIC FREQUENCY CONVERTER / SOLID STATE GPU

Static Frequency Converter

Our Static frequency converter is used to supply voltage and load variations. The output frequency is entirely depend on the elements  which is to control the on/off static devices of frequency converters. So it is totally independent of fluctuations in the frequency & AC voltage. static frequency converter is also works independent of load variations. In induction motor frequency converter.The speed variants sometime because of rotor torque but this will be constant through out the speed range designed by Mak Controls and Systems.

Mak Controls manufacture & designed Static frequency converter have very low installation costs, they don’t require any heavy machinery and careful alignment. It occupies less space and offers low noise compared to mechanical converters with heavy machinery and wide variety of voltage for static frequency converters with a great control due to its independence of voltage power supply variations -SFC

Salient Features

  • State of the art semi conductor technology
  • Unity power factor through APFC
  • Better efficiency
  • Low THDi <5% at linear load
  • Data logging
  • MCU based monitoring and control
  • Green Standby Function
  • Line drop voltage compensation
  • No break power transfer compatibility (NBPT)
  • IP 54 Enclosures for outdoor use
  • Low noise emission (<65dBA@1m)
  • CE Certified
INPUTS
Voltage : 3 phase 400V/415V AC ±15%
Power factor full load :0.99
Frequency :45Hz up to 65Hz
Rectification :IGBT based APFC
Current THD :<5%
OUTPUTS
Voltage :3 phase, 200V(L-L) ±1%
Frequency Nominal 400 Hz
Power factor 0.8 – 1PF
Voltage regulation < 1%
Overload 110% for 1 hour, 125% for 5 minutes, 150% for 5 seconds
Power 90 kVA
EFFICIENCY
Overall efficiency >93%
PROTECTION
  • Under Voltage
  • Over Voltage
  • Over Load
  • Under Frequency
  • Over Frequency
  • Under Voltage
  • Over Voltage
  • Over Load
  • Under Frequency
  • Over Frequency
  • Short-circuit
  • Aircraft interlock
  • ENVIRONMENTAL CONDITIONS
    Operating Temperature :-20°C to + 55°C
    Altitude :Up to 2000 Meter without derating
    Noise Level : < 65 dBA@1 meter
    Altitude : up to 2500m without
    de-rating
    MOUNTING CONFIGURATION
    FIXED/TRAILER/JET BRIDGE
    Note: Due to continuous development, the dimensions, layout, configuration and specifications are subject to change without notice.

    24V 5A – 40A Battery charger

    Technical Specification

    a) General / Output
    Model : MAK BATTERY CHARGER
    Rated output : 24V 5A-40A
    Efficiency : = 86%
    Power factor : = 0.85
    MTBF : = 50000h

    b) Input supply
    Input volt : AC220V?15%, 50/60hz input

    c) Charge current(Adjustable) : 5A to 40A

    d) Mechanical details
    Length (mm) : 232 mm
    Width (mm) : 202 mm
    Height (mm) : 70mm
    Weight (Kgs.) : 3.5kg

    e) Environment conditions :
    Working temperature : -20?C to + 50?C
    Storage temperature : -40?C to +70?C
    Relative humidity : 90% (40?2?C)
    Atmospheric pressure : 70~106 kPa

    f) Dielectric strength :
    Input to shell : = AC1500V
    Input to output : = AC1500V
    Output to shell : = AC500V

    g) Protections for output faults
    OV ? Over voltage
    UV ? Under voltage

    Note: Due to continuous development, the dimensions, layout, configuration and specifications are subject to change without notice.

    12/24V 5A-40A Battery Charger

    Technical Specification

    a) General / Output
    Model : MAK BATTERY CHARGER
    Rated output : 12V-24V 5A-40A
    Efficiency : = 86%
    Power factor : = 0.85
    MTBF : = 50000h

    b) Input supply
    Input volt : AC220V?15%, 50/60hz input

    c) Charge current(Adjustable) : 5A , 8A , 11A , 15A , 19A , 23A , 27A , 31A , 35A , 40A

    d) Mechanical details
    Length (mm) : 232 mm
    Width (mm) : 202 mm
    Height (mm) : 70mm
    Weight (Kgs.) : 3.5kg

    e) Environment conditions :
    Working temperature : -20?C to + 50?C
    Storage temperature : -40?C to +70?C
    Relative humidity : 90% (40?2?C)
    Atmospheric pressure : 70~106 kPa

    f) Dielectric strength :
    Input to shell : = AC1500V
    Input to output : = AC1500V
    Output to shell : = AC500V

    g) Protections for output faults
    OV ? Over voltage
    UV ? Under voltage

    Note: Due to continuous development, the dimensions, layout, configuration and specifications are subject to change without notice.