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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
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Ratings
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Voltage ratings (DC)
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24 V, 30 V, 48 V, 50 V, 110 V, 220 V, 250 V
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Auxiliary Supply
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110 V, 230 V AC
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Settings
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Under Voltage settings (JRV 202)
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30 to 95 % in steps of 5%
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Over voltage setting (JRV 212)
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105 to 170 % in steps of 5%
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Definite time
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0 to 15 s in steps of 1 s (0 s- Instantaneous)
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Over Load Ratings
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Voltage input
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2 times rated continuous
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Burden
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Voltage input
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Less than 2 W at Rated
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Auxiliary Supply
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Less than 6 VA (Non operated)
Less than 8 VA (Operated)
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Accuracy
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Operating Value
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+ 5%
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Operating time
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+ 5% or + 20 ms
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Instantaneous Time
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Less than 60 ms
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Contact Ratings
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Output contacts
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10 A at 24 V DC/230 V AC
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Contacts Durability
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Unloaded contact
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1000000 operations
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Loaded contact
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100000 operations
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Mechanical Design
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Weight
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Apprx 1000 gms
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Case size
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83X148 sq mm, depth 125 mm
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Installation
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Flush mounting
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Panel cutout
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73 mm X 138 mm
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Standard Compliance
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Accuracy test
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IEC 60255-3
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Insulation test
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IEC 60255-5
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Terminal Diagram
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Note
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Wiring diagram of relay types are given on request
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Ordering Information
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Voltage rating (DC)
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24V, 30V, 48V, 50V, 110V, 220V, 250V
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Relay type
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JRV 202 (DC UVR)
JRV 212 (DC OVR)
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Auxiliary Supply
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110 V, 230 V AC
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