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ЭПЗ-77М

ЭПЗ-77M – the electromechanical system in composition:

THE ELECTRIC MOTOR                                 - brushless d.c. motor ДБ100-3700-8M, 1ДБ100-3700-8М;

THE ROTARY ELECTROMECHANISM   -two-motors with summation of rotation frequencies МВ25Д2СМ (МВ25Д2СМ-1);

THE CONTROL SYSTEM                                - three-networks, digital, digital connecting networks;

THE CONTROL DEVICE                                 - commutator of brushless d.c. motor КВД-30-270М,

  sensor unit and limit switches БДКВ-12Т.

ЭПЗ-77M is used for control by transport airplane АН-70 flaps on conditions take-off and landing. 

ЭПЗ-77M ensures:

§      Displacement of flaps:

-       In corresponding to signal from control handle position with automatic regulation of electric drive parameters,

-       From switches of emergency control by failure of basic operating condition,

-       By supply from accumulators in case of alternating current source failure,

-       From one canal electric drive in any condition in case when second canal has refused,

-       From handle drive of rotary mechanism by regulation on land.

§      Built-in automatic check of electric drive state in flight and on land,

§      Fixation of  mechanism shaft by standing brakes of motors.




                                                                                          Basic technical characteristics

Output power, kW

8

 

Supply voltage,V

Three-phase alternating current

115/200

Moment max.,

N·m

Counteracting

245

 

Direct current

27

Helping

 

176

 

Relative efficiency, %

80

Rotation

frequency,

min-1

By counteracting moment

200

 

Mass,

kg

Summary

68

By helping moment

250

 

Actuating electric mechanism

26

 

 

 

Control system

42


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