Millivolt / Thermocouple Relay
 
Introduction :
  The Rishabh Protector trip accepts D.C. Millivolt inputs from transducers or shunts or from any standard thermocouple. The relays offers user adjustable trip point (set point) and time delay settings. The time delay setting adjustment range is typically 0 to 10 seconds, although longer delays are available.
As soon as the monitored signal moves outside of the set point limit, the time delay is activated, after which a trip will occur. The time delay prevents the relay from tripping nuisance tripping.
The products also features an internal differential (hysteresis) setting of 1% to reduce nuisance tripping if the measured signal is noisy or unstable.
These units require an auxiliary power supply.
     
  Specifications :
 
Input :
D.C. millivolts Spans 10mV(min), 50mV, 60mV,
75mV, 100mV, 150mV
Overload 10 x continuously
Input Impedance Approximately 50kW
Source Impedance Maximum 100W
Thermocouple Types J, K, R, S, T Minimum span 10mV Maximum span 50mV
Thermocouple Break Protection(TBP) Upscale drive is standard
Cold Junction Compensation :
(CJC) Available on application
Set point  
Repeatability 0.5% of span
Hysteresis 2 % of span
Adjustment Low trip 0-80%
High trip : 40-120%
Time Delay Up to 10 seconds adjustable
30 seconds maximum
Auxiliary Supply :
A.C. 50/60 Hz 120V or 240V (+20%) (57 to 480V)
D.C. Voltage 12, 24,48 or 120V (+20%)
Burden 3 VA maximum
Weight Approximately 0.4Kg
Voltage Withstand 1.2 x continuously
1.5 x for 10 x 10 seconds to B.S. 6253
Output Relay :
Type DP Changeover
Rating A.C 240V,5A non-inductive
  D.C
View chart
Operations 0.2 million at the above load
Reset Automatic
 
  - Protector Trip Relays
  - A.C. Current Relay
  - A.C. Voltage Relay with adjustable differential
  - A.C. Voltage Relay with adjustable time delay
  - Frequency Relay
  - Combined Under / Over Voltage & Under / Over Frequency Relay
  - Phase Sequence & Phase Failure Relay
  - Phase Balance Relay
  - Reverse Power (Current) Relay
  - Synchro-Check Relay(Paralleling)
  - D.C. Voltage Relay
  - Thermistor Trip Relay
  - Hot Spot 3 Relay
  - Hot Spot 6 Relay
  - Millivolt / Thermocouple Relay
  - Transducer Trip
  - Speed Sensing Trip Relay