Hindon Corp.

ELDROŽ
Electrohydraulic
Thrusters
Description Sheet

Electrical Design

Motor

3 ph AC squirrel cage motor, construction acording to VDE 0530. For performance details, please refer to technical data.
Insulation class F.

Modes Of Operation

Continuous operation S1 and intermittent service S3 - 60% duty cycle. For ambient temperature greater than 50°C, please inquire.

Voltages and Frequencies

220/380 V, 50Hz, 3 ph AC 290/500 V, 50 Hz, 3 ph AC 380/660 V, 50 Hz, 3 ph AC. All units are on principle star (Y) connected at delivery. Special windings 110V - 660V, 3 ph AC at extra charge. 60 Hz design at extra charge. DC and AC versions are not available.

Terminal Box

6-pole terminal board with connection screws M4. Protective conductor terminal M4. Ground screw M5
(outside on terminal box).

Cable Gland

Cable gland
for conductor sizes up to
4 x 2.5 mm˛ (Ř 17 - 19 mm).

Key To Types

Example:

Ed 30/5 c, d, H, S, E,EB (Sch)d, (Ex)d

Ed ELDROŽ, 3 ph AC version

30/5 Type

c Brake spring (c-spring)

d Damping spring (d-spring)

H Lifting valve

S Lowering valve

E Limit switch, mechanical

EB Limit switch, inductive

(Sch)d Hazardous area enclosure
for underground coal mines
(Methane/Firedamp)

(Ex)d Hazardous area enclosure
for all other gases

Mechanical Design

Assembly Dimensions

Refer to dimension tables.

Mounting Positions

Vertical: piston rod uppermost. Horizontal and intermediate positions:rating plate to be on top.

Mounting Options

(except units with limit switches)
The base mounting is available shifted in steps of 90°. The top pressure lug is rotatable. For details refer to dimension drawings.

Working Fluid

Hydraulic oil HL 10 according to
DIN 51524, part 1, filled at factory.

Safety Measures

Piston rod chromium plated to size.
Dust proof double seal.
Double seal to oil chamber.

Standard Paint

Synthetic resin lacquer varnish, impact and scratch resistant.
Coating thickness ~ 40 ľ.
Tint RAL 7022 (umbergrey).
Other colors and coatings for increased corrosion protection available at additional cost.

Additional Equipment

Lifting or Lowering Valve
(H, S, HS)

Built-in lifting (H) and/or lowering (S)valves for stepless prolongation of normal lifting or lowering times. The adjustable minimum values obtain a level 10 - 20 times the standard values. Built-in valves in setting "open" result in increased lifting and lowering times for short stroke units of aprx. 0.1 to 0.2 seconds and for long stroke units of aprx. 0.2 to 0.4 seconds. The valves can be adjusted externally.

Brake Spring (c-Spring)š

The c-spring generates the braking force. The specified force of the
c-spring applies for 1/3 of the piston rod's rated lift stroke or 2/3 of the rated lower stroke.

Re-setting Springš

Operation similar to c-spring, re-setting force is, however, lower (on-request).

Damping Spring (d-Spring)š

Damps the aperiodic transient of the brake. It is mounted in place of of the standard pressure lug onto the piston rod. No limit switch can be annexed in this case. There is no alteration in the mounting distance A. When determining the operating point of the brake the dimension "z" is to be considered (see dimension drawing).
Main application:
ELDROŽ - regulated brake.
š Applies only to short-stroke units

High-Speed Lowering Circuit

By means of motor capacitors, or by short-circuiting the stator winding and inserting a contacter. The lowering times are reduced by approximately 15%.

Heater

For operation below -25°C a heating element must be installed; also to be used as a stand-by heater

Increased Corrosion Protection

Application: aggressive media and/or high relative humidity and the resulting danger of formation of condensate.
Motor: vacuum fully potted stator, applicable also instead of idling space heater (on request).

Limit Switches

For electrical indication of a freely selectable position of the piston or of brake lining wear, mechanical or inductive limit switches can be fitted as standard.

Š 1997, Hindon Corp.
Š 1997, Website Design, The LAD Group