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Brake Motors
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Brake Motor is combination of an AC Induction Motor and Electromagnetic DC brake. DC supply is fed to the brake from a rectifier unit installed in the motor terminal box. The brake is disc type and is mounted on the motor shaft. The brake is ‘Fail proof Type’ i.e. brake comes into action and stops the driven equipment instantly when the power to the motor is switched off or / if power fails. The supply to the rectifier is fed from any two terminals of the main terminal box .
Havells with its AEG technology, state-of-art plant and automatic processing can offer zero-defect Brake Motors in frames 63 to 160, in 2P, 4P, 6P and 8P versions.
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Operation
Under ‘OFF’ power condition Brake springs keep the Brake Liner pressed against the mounting flange thus preventing the rotation of the motor shaft. When power is switched on, the Brake coil gets energized through the Rectifier unit. It instantly attracts the armature disc by overcoming the spring force. This results in releasing of the brake rotor allowing the motor to rotate.
In the event of power failure / switch of mode, the brake coil gets de-energised. This results in the springs pressing the brake liner against mounting flange, i.e. returning armature disc to its original position. This results in instantaneous braking of rotor. Fail safe condition is thus ensured.
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Special Features
• The brake motors are simple, rugged & easy for maintenance.
• No separate DC supply is required as the rectifier is provided, which gives the required DC voltage for energisation of the brake.
• The rectifier is mounted inside the main terminal box so no separate terminal box required.
• Special brake liner is used which ensures, the braking torque value remains quite stable through out the use. |
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General guidelines for selection of suitable brake model.
The brakes are rated by torque & selection of suitable model can be made by calculating the required torque, rating or the brake & then matching it with static torque.
Torque (Nm) = 9550 x (KW/RPM) x Safety Factor (SF)
where,
KW-Kilowatts of motor,
RPM-Speed of motor,
SF-Safety Factor |
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Applications
Brake Motors are used for numerous applications.
A few of them are listed below:
• Textile machinery • Machine Tools • Printing Machine • Cranes and Hoists • Material Handling Equipments
• Leather Processing Machines • Cable Reeling Drums • Rolling Mills • Elevators• Conveyers, etc. |
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DC Brake Motors:
Voltage : 415V +/-10%
Frequency : 50Hz +/-5%
Combined Variation : +/-10%
Ambient Temp. : 50ºC
Duty : S1
Mounting : B3, B5, B14 & B35
Ins. Class : F
Temp. Rise : B
Protection : IP55 |
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Authorised Dealers for : |
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D/1225, 10, Karnik Heritage, 3rd Floor, F.C. Road, Shivaji Nagar, Pune - 41104., Maharashtra, India |
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Tel No.: + 91 020 25511860, 41228330,
Fax No.: + 91 020 25511860,
Mobile No.:+ 91 9423014677, 9552508077 |
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| Email : response@acdrivesindia.co.in |
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