ED SERIES ELE CTRO HYDRAULIC THRUSTERS

Ambient temperature: When the temperature ranges from200C to + 500C, use DB-25 hydraulic oil; When thetemperature is lower than 200C, use YH-10 aero hydraulic oil, whichis no necessary to be added with a heater or use DB-25 hydraulic oil which mustbe added with a heater.

Continuous operation S1, intermitted operation S3, duty on-time rateFC = 60%.

Voltage and frequency: 3 phase, AC power, 380 V / 50 HZ. Otherproducts with different frequency and voltage are also available upon request.Please consult when ordering.

The 3phase, AC asynchronous motor accords with GB755-2000 standard. The insulationclass is F. The electrical protection grade is IP 65.

CableThe maximum size of the cable entry is up to 4 X 2.5 mm2.

Highefficient anticorrosive? products which are applicable for places with corrosivemedium in the air and high relative humidity and condensed water mayconsequently be produced. The motor adopts the stator of vacuum injection. Thecoating adopts special anticorrosive paint series which can furnish all sorts ofanticorrosive products. Customers can consult with the company uponrequest.

Vertical mounting: Connecting lug of the piston roduppermost.

Horizontal mounting and any intermediate positions: Mounting typerefers to the figure below.

All ofthe connecting lugs of the thrusters are rotatabe. The basement fixture of Ed50- Ed301 thrusters can be 900 rotatable. The basement fixture of Ed23- Ed30 thrusters can also be 900 rotatable. However the dimension Aof the mounting height has to be increased by 8 mm. (Please specify whenordering).

Thepiston rod must never bear the radial force in any mounting position so as toavoid any influence on the application effect and service life.

Various additional devices can be equipped upon request of thecustomers to meet the demand of various applications.

Lifting or lowering valve(s). The lifting of lowering time can bysteplessly prolonged by adding the lifting valve H”, lowering valve S” or bothlifting and lowering valves. The adjustable maximum value is up to 10 - 20 timesof the rated value. The valve is adjusted externally. Thrusters with thevalve(s) (when the valve is completely opened) gives longer lifting or loweringtime, 0.1-0.2 second for short stroke and 0.2-0.4 second for longstroke.

Brakespring (C-spring): C-spring generates the braking force. Values of the force ofthe braking spring? shown in table 1refer to the spring force of 1/3 of the lifting stroke (2/3 of the loweringstroke).

Resetspring: The working principle is similar to C-spring. However the force of thereset spring is smaller.

Damping spring (d-spring): Damping spring (only applicable for shortstroke thrusters) is added mainly to adjust the braking process. The aperiodictransient process of dampened braking makes the braking smooth. It is fitted onthe piston rod instead of the connecting lug of the push rod, which does notchange the stroke of the thruster. (Note: The thruster can not be equipped withthe limit switch if d-spring is fitted and must be adapted withC-spring).

Heater: For places with the ambient temperature lower than200C a heater can be added upon request of the customers. Heaters areof AC 220 V, AC 110 V. Please specify when ordering. The methods of temperaturecontrol and adjustment are at the disposal of the customers.

Limitswitch: The thrusters can be fitted with mechanical limit switch or approachswitch.

Thepiston rod adopts advanced protective measures which can reduce the wear andprotect corrosion and equipped with dust protection double seal and oil chamberdouble seal of the hydraulic system, which greatly increase the servicelife.

Additional devices see the table attached.