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Products
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 Definite Time Relay |
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We are engaged in offering wide range of Definite time Relay.
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Definite Time Earth Fault Relay
FEATURES • Software based design • Wide setting range • Wide auxiliary supply • Low burden APPLICATION The relay provides earth fault protection of Generators, Motors, Transformers, Capacitors, Feeder etc. PRINCIPLE OF OPERATION JRC 932 provides earth fault protection for power systems. Relay operating time is determined by set definite time. The relay measures the current from input CT and if it exceeds the set threshold, it extends a trip signal after the operating time, which is determined by set definite time. The relay output contacts are self reset type. TEST button facilitates testing of relay contacts for trip and alarm circuits. TECHNICAL DATA | RATINGS | | | Current rating | 1A/5A | | Auxiliary Supply | 20 to 60V DC | | | 80 to 260V AC / DC | | SETTINGS | | | Earth fault setting | 5 to 80% in steps of 5% | | E/F Hi-set setting | 2 to 16 times the earth fault setting in steps of 1 | | Definite time setting | 0.1s to 16s | | | 0.1s to 3.2s in steps of 0.1s | | | 0.5s to 16s in steps of 0.5s | | OVER LOAD RATINGS | | | Current input | 2 times rated continuous | | | 20 times rated for 3s | | BURDEN | | | Current input | 0.2VA at rated 5A | | | 0.05VA at rated 1A | | Aux. Supply | Less than 3W (Non operated) | | | Less than 5W (Operated) | | ACCURACY | | | Operating value | ± 5% | | Operating Time | ± 5% or ±20ms | | Reset time | 200 to 250ms | |
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Definite Time Single Pole Over Current Relay
FEATURES • Software based design • Wide auxiliary supply • Low burden APPLICATION The relay provides over current protection of Generators, Motors, Transformers, Capacitors, Feeder etc. PRINCIPLE OF OPERATION JRC 912 provides single pole over current protection for power systems. Relay operating time is determined by set definite time. The relay measures the current from input CT and if it exceeds the set threshold, it extends a trip signal after the operating time, which is determined by set definite time. The relay output contacts are self reset type. TEST button facilitates testing of relay contacts for trip and alarm circuits. TECHNICAL DATA | RATINGS | | | Current rating | 1A/5A | | Auxiliary Supply | 20 to 60V DC | | | 80 to 260V AC / DC | | SETTINGS | | | O/C setting | 50 to 125% in steps of 5 % | | Definite time setting | 0.1 to 25s in steps of 0.1s | | OVER LOAD RATINGS | | | Current input | 2 times Rated continuous | | | 20 times Rated for 3 s | | | 40 times Rated for Is | | BURDEN | | | Current input | 0.2VA at Rated 5A | | | 0.05VA at Rated 1A | | Aux. Supply | Less than 3W (Non Operated) | | | Less than 5W (Operated) | | ACCURACY | | | Operating value | ± 5% | | Operating Time | ± 5% or ±20ms | | Instantaneous time | Less than 40ms | | Reset time | 200 to 250ms | |
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Definite Time Under Voltage Relay
FEATURES • Software based design • Instantaneous/Definite time selection • Wide auxiliary supply • Low burden APPLICATION The relay provides under voltage protection of Motors, Generators, Capacitor Banks etc. PRINCIPLE OF OPERATION JRV 922 provides under voltage protection for power systems. Relay operating time is determined by set definite time. The relay measures the voltage from input PT and if it exceeds the set threshold, it extends a trip signal after the operating time, which is determined by set definite time. The relay output contacts are self reset type. TEST button facilitates testing of relay contacts for trip and alarm circuits. TECHNICAL DATA | RATINGS | | | Voltage rating AC UVR | 110VAC | | DC UVR | 110VDC | | Auxiliary supply | 20 to 60V DC | | | 80 to 260V AC / DC | | SETTINGS | | | Voltage setting | 30 to 95% in steps of 5% | | Definite time | 0.1 to 25s in steps of 0.1s | | OVER LOAD RATINGS | | | Voltage input | 2 times Rated continuous | | BURDEN | | | Voltage input | Less than 2VA at Rated | | Auxiliary supply | Less than 3W (Non Operated) | | | Less than 5W (Operated) | | ACCURACY | | | Operating value | ± 5% | | Operating time | ± 5% or ± 20ms | | Instantaneous Time | Less than 40ms | | CONTACT RATINGS | | | Contacts 1 & 2 | 5A at 24V DC/230V AC | |
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Definite Time DC Voltage Relay
FEATURES • Software based design • Wide auxiliary supply • Low burden APPLICATION The relay provides DC Under voltage / Over voltage protection for DC systems. PRINCIPLE OF OPERATION JRV 202 provides under voltage protection and JRV 212 provides over voltage protection for DC systems. Relay operating time is determined by set definite time through front DIP switches. The relay measures the input voltage and if it exceeds the set threshold, it extends a trip signal after the operating time. The relay output contacts are self reset type. TEST button facilitates testing of relay output contacts for trip and alarm circuits. TECHNICAL DATA | RATINGS | | | Voltage rating (DC) | 24V, 30V, 48V, 50V, 110V,220V, 250V | | Auxiliary supply | 110V, 230V AC | | SETTINGS | | | Under Voltage setting (JRV 202) | 30 to 95% in steps of 5% | | Over Voltage setting (JRV 212) | 105 to 170% in steps of 5% | | Definite time | 0 to 15s in steps of Is (0s - Instantaneous ) | | OVER LOAD RATINGS | | | Voltage input | 2 times rated continuous | | BURDEN | | | Voltage input | Less than 2W at Rated | | Auxiliary supply | Less than 6VA (Non Operated) | | | Less than 8VA (Operated) | | ACCURACY | | | Operating value | ± 5% | | Operating time | ± 5% or ± 20ms | | Instantaneous Time | Less than 60ms | |
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Definite Time Over Voltage Relay
FEATURES • Software based design • Instantaneous/Definite time selection • Wide auxiliary supply APPLICATION Over Voltage Relay is used for protection of motors, generators and capacitor banks, feeder etc. PRINCIPLE OF OPERATION JRV 042 provides Over voltage protection for power systems. Relay operating time is determined by set definite time. The relay measures the voltage from input PT and if it exceeds above the set threshold, it extends a trip signal after the operating time, which is determined by set definite time. The relay output contacts are self reset type. TEST button facilitates testing of relay contacts for trip and alarm circuits. TECHNICAL DATA | RATINGS | | | Voltage rating | 110V/230VAC | | Auxiliary supply. | 1)20 to 60V DC | | | 2)75 to 150V AC/DC | | | 3)175 to 300V DC / 185 to 250V AC | | SETTINGS | | | Voltage setting | 105 to 170% in steps of 5 % | | Definite time | 0 to 25s in steps of 0.1s. | | OVER LOAD RATINGS | | | Voltage input | 2 times Rated continuous | | BURDEN | | | Voltage input | Less than 2VA at Rated | | Auxiliary supply. | Less than 2W (Non Operated) | | | Less than 5W (Operated) | | ACCURACY | | | Operating value | ± 5% | | Operating time | ± 5% or ± 20ms | | Instantaneous time | Less than 40ms | | CONTACT RATINGS | | | Ratings | 10A at 24V DC/230V AC | |
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Definite Time Earth Leakage Relay
FEATURES • Bar graph indication of leakage current • Remote reset and test facility • Wide range of settings • Low burden
PRINCIPLE OF OPERATION JRC 974 provides earth leakage protection for power systems. The relay operating time is determined by a programmable definite time delay. TECHNICAL DATA | RATINGS | | | Current rating (In) | 0.03 to 0.1 A /0.3 to 1.0A | | | 0.03to0.1A/0.15to0.50A | | | 0.3 to 1.0A/ 1.5to5.0A | | Auxiliary Supply | 110V/220VAC | | SETTINGS | | | Current setting | 0.03 to 0.1A in steps of 0.01A | | | 0.3 to 1.0 A in steps of 0.1A | | | 0.03 to 0.1 A in steps of 0.01 A | | | 0.15 to 0.5 in steps of 0.05A | | | 0.3 to 1.0 A in steps of 0.1 A | | | 1.5 to 5.0A in steps of 0.5A | | OVER LOAD RATINGS | | | Current input | 10 times the rated continuously | | BURDEN | | | Auxiliary circuit | < 3W (Non-operated) | | | < 6W ( operated) | | Current input circuit | < 2VA at rated current | | ACCUTACY | | | Operating value | + 5% | | Operating time | + 5% or + 30ms (which ever is higher) | | CONTACTS RATINGS | | | Output contacts - 1&2 | 10A at 24V DC/230V AC | |
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