Electro-Hydraulic Thruster Eldro

Specifications

1.Low Power Input
2.Up to 720 Operations per Hours
3.Bi-Direction Operation
4.Easy mounting & dismounting

Flame-proof Thrusters are specially designed for operation in hazardous atmosphere (Zone1areas) Gas groups I, IIA & IIB, as per IS 2148. Construction of Flame -Proof thruster is similar to a standard ETH type thruster and is modified to meet the requirements as specified on IS:2148(2004). The Terminal box is also re-designed to provide for the molded terminal studs to most of the industrial applications.

 

 

Construction Features and operation

The Two main sub-assemblys of the hydraulic thruster, the Flame-proof induction motor and the hydraulic unit are co-axally assembled to form the working unit. In the switched off state (de-energised), the piston is at its lowest position due to external load (as brake spring of the drum brake), and the brake is applied. When energised, the electric motor drives the centrifugal pump and delivers working fluid under the pisto , under high pressure. This moves the piston axially in the guided path, and delivers thrust or force required to operate the attached device (like thruster brake) via the piston rod and the eye -lug attached to it.

The delivered thrust is jerk-free, smooth, in constant magnitude and perfectly linear. Except at the and positions, the power intake of the motor is reduced as compared to the power demand while lifting.Thus, the thruster is insensitive to external overloads. This makes the thermal over-load protection to the motor unnecessary.The asynchronous motor can be wound for any suitable line voltages up to 600V ac. No special precautions are needed for ambient temperature range of +45° C to -10° C. The centrifugal pump impeller has radial vanes is equally efficient in both directions.

Features

1. Compact, Light weight and
2.Elegant design.
3. Reliable and maintenance free operation.
4. Low noise, does not emit electrical disturbances.
5. IP-55 degree of protection.
6. Suitable for out-door installation
7. Low power input.
8. Up to 720 operations per hour
9. Easy mounting and dismounting.
10. Bi-direction operation. immune from external over loading and Supply voltage variations
11. Class F insulation scheme
12. Windings for any voltages up to 600V AC.

 

 

Certifications
The thruster motor is duly certified for use in Hazardous atmospheres Zone I areas Gas Groups I,IIA and IIB, by the national authority Central Institute for Fuel Research ( CIMFR ) Dhanbad, Jharkhand, India.

 

 

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