Jyoti Limited

Electronics and Control Systems

Product Features
Sr.
No.		 Function Relay Type Technical Particulars Applications
1 Triple pole Solid State non-directional IDMTL Over current & Earth Fault Relay in Draw-out-case
(3 O/C OR 2 O/C + 1 E/F)		 JTRSA

  • O/C : 50 to 200% OF 5A / 1A

  • E/F : 10 to 40% OF 5A / 1A 20 to 80% OF 5A / 1A
  • Instantaneous Unit : 400% to 2000%
  • Characteristics : 3Sec / 1.3 Sec
  • Aux Supply : 24/30/50/110/220 VDC
  • LED Flag Indicators

Used for protection of motors, generators, transformers, distribution lines and as back-up relay on EHV transmission lines.
2 Single Pole Solid State non-directional IDMTL in Draw-out case JSRSA
  • As per Sr. No.1
 - As per Sr. No. 1
3 Single Pole Solid State non-directional IDMTL Over current or Earth Fault Relay in Draw-out-case JSRSA
  • With Very Inverse Characteristics
  • Rest as per Sr. No. 1
 - As per Sr. No. 1
4 Single Pole Solid State Directional IDMTL Over current or Earth Fault Relay in Draw-out-case JDRSA
  • Max Torque Angle for O/C
    - 45 Deg / 30 Deg. Lead
  • Max. Torque Angle for E/F
    - 45 Deg. Lag
  • Rest as per Sr. No. 1
 - Used for the ring mains, parallel feeders, parallel transformers, etc.
  • Relays Sr. No. 1 to 4 are also available without instantaneous unit.
5 Instantaneous Under / Over voltage relay in Draw-out-case PV
  • Voltage Setting Range :
    - Under Voltage : 40 to 80% or 30 to 90%
    - Over Voltage : 110VAC, 50 Hz
  • Nominal Voltage : 110 VAC, 50 Hz
  • Aux Supply : 24/30/48/110/220 VDC
  • LED Flag Indicators
  • Relay with any fix voltage setting also available
 - Over voltage protection of generators, power capacitors, etc.
- Under voltage protection of AC motors.
- Automatic voltage change over schemes.
6 Definite Time Lag Under / Over Voltage relay in Draw-out-case SPVK
  • Time range : 0.05 Sec to 120 Secs.
  • Rest as per Sr. No. 5
 - As above
7 Instantaneous electro-mechanical 3 -pole current operated relay PA
  • With three current measuring elements RMA
  • Current Ranges
    0.006 to 0.024 - 1.5 to 6.0
    0.024 to 0.096 - 2.4 to 9.6
    0.06 to 0.24     - 3.0 to 12.0
    0.075 to 0.30   - 4.5 to 18.0
    0.2 to 0.8         - 6.0 to 24.0
    0.3 to 1.2         - 12.0 to 48.0
    0.6 to 2.4         - 18.0 to 72.0
    1.2 to 4.8         - 24.0 to 96
  • With LED indicators
  • With one output relay RE - 300 (AC/DC)
  • Aux Voltage : 24/30/50/110/127/220 VDC
    : 110/240 VAC, 50 Hz.
  • With plug-in base (Case ref. EGE-301)
  • Two Pole & Single Pole relays are also available
 - Over current & Earth fault protection of feeders, transformers, motors, alternators, etc.
- Sensitive earth fault protection in isolated /ineffectively earthed system
- Restricted earth fault protection of transformers / generators
- Differential protection of generators / motors
8 Definite Time Lag Current Operated Relay SPAK
  • With three current measuring elements RMA
  • Current Ranges as per Sr. No. 5 but highest 6 to 24 Amps.
  • With one unit of time delay relay type SRT-11C
    (Aux. Supply : 24/30/48/110/127/220 VDC)
  • Time Ranges :
    0.1 to 2.0 secs
    0.3 to 6.0 secs
    0.5 to 10.0 secs
    1.0 to 20.0 secs
    1.25 to 25.0 secs
  • With LED indicators
  • With plug-in base (case ref. EGE-301)
  • Two Pole & Single Pole relays are also available.
 - Time graded over current & earth fault protection of motors, alternators, transformers, etc.
- Definite time over current protection against phase & earth fault on medium & low voltage distribution systems.
- Sensitive earth fault protection.
- Stalling protection of motors.
- Overload protection for motor feeders.
9 Solid state trip circuit supervision relay
JTS-11



JTS-10
  • With supervision under breaker 'ON' and breaker 'OFF' condition
  • With LED Indicator (H/R)
  • Aux. Supply 24/30/50/110/127/220 VDC
  • Case ref. EGE-201
  • With supervision only under breaker 'ON' condition
  • Rest as per Sr. No. 9
 - Used for supervision of a circuit breaker, for initiation of alarm and visual indication if the trip circuit fails or the circuit breaker mechanism does not operate.
10 Solid state time delay relay with delay on pickup or drop-off SRT-11C
SRT-22
  • Aux. supply 24/30/50/110/127/220 VDC
  • With LED indicator (H/R)
  • Times ranges :
    0.05 to 1.0 - 1 to 20
    0.1 to 6.0 - 3 to 30
    0.3 tp 6.0 - 6 to 120
    0.5 to 10.0 - 15 to 300
  • Case ref. EGE-201
 Used for time graded selective protection and industrial processes where a large number of operations are required with high reliability and consistent accuracy.
11 Power Unit JDL-110
  • With trip circuit healthy and DC healthy indicators (For captive tripping of circuit breakers)
  • With 20 watt-sec output energy
  • Input Voltage 110/240 VAC, 50 Hz.
  • Output Voltage 110 VDC
  • Without plug-in-base (Case ref. EGE-301)
 - Where provision of station batteries is not economical, power unit is used for energizing trip coil of the circuit breaker.
JDK-110
  • With 20 watt-sec output energy and built in RE-300 relay
12 Voltage operated Auxiliary Relay RE-300
  • With 4 C/O contacts
  • With plug-in-base suitable for front and rear connections
  • With Electromechanical Flag
  • Coil voltage DC : - 12,24,30,48,50,75,110,127,220,240 & 250 V
  • Coil burden 4 watts
  • Pick-up 80%(max)
  • Coil voltage AC, 50 Hz. 24, 30, 36, 110,115,127,150,220,230,240 415 V
  • Coil burden 6 VA (3W)
  • Pick up 80% (max)
  • Non-standard voltage coils within the range of 6V to 250V or up to 415 VAC, 50 Hz. can be supplied against specific requirements (anyone)+/- 10%, 50Hz +/- 3%, Single Phase.
 - Auxiliary relay panels
- Multiplication of contacts
- Voltage selection
- Anti-pumping
- As an output relay in PLC systems
- Fuse failure indication in control circuits
13 Mini Auxiliary relay RE-400
  • With 4 C/O contacts
  • With plug-in base suitable for front connection
  • Coil voltage DC:
    12,18,24,30,48,50,75,110,115,220 V
  • Coil burden 2.3 watts 
    * Pick up 80% (max)
  • Coil voltage AC, 50 Hz.
    - 12, 18, 24, 30, 48, 50, 63 5, 110, 15, 127, 220, 230, 240 V
  • Coil burden 3.5 VA * Pick-up 80% (max)
  • Non-standard voltage coils within the range of 6V to 250V or up to 415 VAC, 50 Hz. can be supplied against specific requirements anyone)+/- 10%, 50Hz +/- 3%, Single Phase.
 - Auxiliary relay panels
- Multiplication of contacts
- Voltage selection
- Anti-pumping
- As an output relay in PLC systems
- Fuse failure indication in control circuits
14 Modular type scanner up to channels 3321
  • Type of inputs RTD or T/C or 4-20 MA or 0-5V
  • Display 7 segment 12.5 mm RED color LED 3 1/2 digit for Temp. & 1 digit for set point.
  • Input power supply110/115220/230/240 VAC
  • No. of relay outputs up to 6 Nos. with 1 NO / 1 NC contact per relay (set points up to 6) or up to 4 Nos. with 1 NO + 1 NC contact (set points up to 4)
  • Alarm / Trip LED indication on scanner
  • All controls and set points adjustment from Scanner front.
 - Used to monitor temperature, pressure, load, etc. in H.T Motors, Generators, Alternators, Turbines, Compressors and process control units. These scanners are suitable for continuous use in industrial environment
15 Modular type scanner up to 16 channels 3360
  • No. of inputs RTD or T/C or 4-20 MA or 0-5 V or combination of two inputs (up to 8 channels each type)
  • Display 7 segment 12.5 mm RED color LED 4,2,1 & 1 digit for Temp. data, channel no., S.P. No. and limit display respectively & 1 digit for set points.
  • No. of relay outputs up to 8 Nos. with 1 NO + 1 NC contact per relay (set points up to 8)
  • Rest as per model 3321
 - Used to monitor temperature, pressure load, etc. in H.T. Motors, Generators, Alternators, Turbines, Compressors and process control units. These scanners are suitable for continuous use in industrial environment.