Product Details (This product is current)
DE002/7 - Speed Sensing Relay
  Monday, October 18, 2010
  Monday, October 18, 2010

Product Ref No: 136
Order No/Series: DE002/7

Pricing: $250.00 per unit
This is indicative only. Call for current pricing.

get more info
Once Added, Products will be added to the list at the top of the website.
Click the email icon to submit your request(s).

Products by this Supplier
  » DE002/7 - Speed Sensing Rela.. 
  » DE004 - Engine Protection Mo.. 
  » DE006 - Autostart Module 
  » DE008 - Crank Cycle Timer 
  » DE011 - Under/Over Voltage A.. 
  » DE015 - Reverse Power Relay 
  » DE025 - Phase Failure Relay 
  » DE097 - Speed Sensor 
  » View all above...
DE002/7 - Speed Sensing Relay

The Delta speed sensing relays are designed as protection equipment for diesel engine or similar rotating machinery where several speed levels must be detected.

The relays accept an input signal from a tacho generator or similar AC or DC voltage source, the output voltage of which is proportional to engine speed. VDO tacho generator type 2.340 or equivilent is suitable.

Three relays within the unit operate at preset levels to provide functions normally related to starter motor cut-out, underspeed and overspeed. The relay requires a DC voltage of 12 or 24 volts negative ground. 12 or 24 volt positive earth systems may be used but the tacho generator must be unearthed and the winding returned to terminal 1.

With the DE002 the starter cutout and underspeed relays are energised at rest and are de-energised at the set speed as speed increses. The DE007 operates in reverse to this.

On falling speed, starter cutout and underspeed realys will energise as the speed passes through set levels but on rapidly falling speed a 3 second non-adjustable timer delays operation of both relays.

The overspeed relay is latched if the speed rises above the set point, it is reset by breaking the positive supply.


Supply voltage: 12 or 24V DC (specify when ordering)
Starter cutout speed: 700 or 350 rpm (specify when ordering)
Nominal tacho generator speed: 1500 or 750 rpm (specify when ordering)
Underspeed relay operates at: 1350 or 675 rpm (specify when ordering)
Overspeed relay operates at: 1650 or 825 rpm (specify when ordering)
Relay contacts: Single changeover contact, 5Amp resistive.
Inductive loads must have diode suppression.
Adjustment: Potentiometers - variations of +/-10% from presets
Repeatability: +/- 2%
Dimensions: 155mm(L) x 128mm(W) x 55mm(H)
Weight: 0.5kg
Finish: Grey hammer tone stoved enamel
PRICE: $250.00
request info

It's 4:03 AM in South Australia.
Please contact us via email.
The Phase Failure relay detects low voltage on one or more phases on a three phase supply. .....
Switchmode Power Supplies offer high power output in small packages, combined with easy to mount open style .....
The DE 011 is a single phase voltage sensing alarm with built in time delays. The time .....
The GM-012 DUAL SPEED SWITCH is a low cost printed circuit board (PCB) assembly for use as .....