Three Phase Over Current & Earth Fault Numeric Relay Testing System 

Three Phase over Current & Earth fault Numeric Relay Testing System is a useful product for Electrical Power System Laboratories. The main purpose of protection relay is to detect and identify faults and interrupts power to the equipment to avoid the entire network to fail or cause more damages to personnel or equipment.

An Over Current Relay operates when the load current exceeds a preset value, whereas the function of Earth Fault Relay is to protect any system from earth fault. includes inbuilt Microcontroller based Three Phase Over Current and Earth Fault Numerical Relay with facilities to select various characteristic curves at different Time Multiplier Settings (TMS) and Current Settings.

The setting and selection of characteristic curves are carried out by a soft touch keypad provided on the front panel of the Numeric Relay. There is a large font LCD to display all necessary parameters in a single frame.
Also provides facility to inject and adjust the current to analyze the Numerical Relay at different current values. All the requisite protective devices such as MCB, Fuses, etc. have been used for utmost safety.

FEATURES:-

• Four element (Three Phase + Earth Fault) Non Directional
• Over Current Relay
• Numeric Relay provides with Curve’s Selection Facility: Normal Inverse 1(C1), Normal Inverse 
       2(C2), Very Inverse(C3), Extremely Inverse (C4), Long time Inverse (C5) and define Time (C6)
• Compatible for Internal calculation of zero sequence current under earth fault
• Provided with CT Secondary Selection Facility
• Large Font LCD for input current and tripping time display
• Provided with Current Injection Source
• Microcontroller based Numeric Relays Demonstration
• Designed by considering all the safety measures
• Diagrammatic Representations for the ease of connections

TECHNICAL SPECIFICATIONS:-

• Mains Supply : Three Phase, 415V ±10%, 50Hz
• Auxiliary Supply : 230V ±10%, 50Hz
• Display Measurements
• Current Input : >100mA
• Time Accuracy : 1 Second
• Over Current and Earth Fault Relay
• Input Current : Suitable
• Reset value : 90% to 95% of pickup
• Auxiliary Supply : 18-250V AC/DC

** Note:-The content of the product and specification are subject to change without prior notice for continuous improvement. Images shown are for representation purpose only. “MICROTEKNIK“ keeps the right to modify the content in the product without prior notice.