Novatek Electro India’s RN-119 is a microcontroller-based single-phase voltage monitoring relay designed to protect electrical equipment from power supply fluctuations. Its primary function is to disconnect the load when the mains voltage goes outside of the acceptable range and then automatically re-energize it once the voltage returns to normal.
How it Works –
The RN-119 constantly monitors the true root mean square (RMS) value of the input voltage. It has a digital display that shows the current voltage and allows the user to program a minimum and maximum voltage threshold.
– Over/Under Voltage Protection: If the voltage exceeds the maximum set point or drops below the minimum set point for a pre-determined time, the relay’s output contacts open, de-energizing the load.
– Neutral Break Protection: A key feature of the RN-119 is its ability to protect against a “neutral break” condition. In a single-phase system, a broken neutral can cause a dangerously high voltage (up to 415V) to appear on the load. The RN-119 detects this and trips to protect the connected appliances.
– Automatic Reclosing: Once the voltage returns to the normal range, the relay has a programmable “ON delay” timer that waits for a set period before automatically re-energizing the load. This prevents rapid on/off cycles that can be harmful to equipment like refrigerators or air conditioners.
– Direct Switching and Contactor Control: The RN-119 can directly switch loads up to 16A. For higher-power loads, its output contacts are used to control a magnetic contactor.
How it Differs from Other Relays –
The Novatek Electro RN-119 distinguishes itself from many basic voltage monitoring relays with its advanced features and user-friendly design.
– Digital Display & Programmability: Many simpler relays use only status LEDs and analog potentiometers for settings. The RN-119’s 3-digit LED display provides real-time voltage readings and allows for precise digital programming of voltage thresholds and time delays. This offers greater accuracy and ease of use.
– Neutral Break Protection: While some relays protect against over/under voltage, the specific inclusion of neutral break protection is a notable advanced feature. This protects against a critical and potentially devastating fault condition that basic relays may not detect.
– Adjustable ON Delay: The ability to set an adjustable ON delay from 5 to 900 seconds is a significant advantage. This feature is crucial for protecting motor-based appliances, which can be damaged by frequent power interruptions and restorations. Many basic relays have a fixed or no time delay.
– True RMS Measurement: The RN-119 measures the true RMS voltage, which provides a more accurate reading of the voltage even when the waveform is distorted by harmonics.
Novatek Electro India’s RN-119 is a microcontroller-based single-phase voltage monitoring relay designed to protect electrical equipment from power supply fluctuations. Its primary function is to disconnect the load when the mains voltage goes outside of the acceptable range and then automatically re-energize it once the voltage returns to normal.
How it Works –
The RN-119 constantly monitors the true root mean square (RMS) value of the input voltage. It has a digital display that shows the current voltage and allows the user to program a minimum and maximum voltage threshold.
– Over/Under Voltage Protection: If the voltage exceeds the maximum set point or drops below the minimum set point for a pre-determined time, the relay’s output contacts open, de-energizing the load.
– Neutral Break Protection: A key feature of the RN-119 is its ability to protect against a “neutral break” condition. In a single-phase system, a broken neutral can cause a dangerously high voltage (up to 415V) to appear on the load. The RN-119 detects this and trips to protect the connected appliances.
– Automatic Reclosing: Once the voltage returns to the normal range, the relay has a programmable “ON delay” timer that waits for a set period before automatically re-energizing the load. This prevents rapid on/off cycles that can be harmful to equipment like refrigerators or air conditioners.
– Direct Switching and Contactor Control: The RN-119 can directly switch loads up to 16A. For higher-power loads, its output contacts are used to control a magnetic contactor.
How it Differs from Other Relays –
The Novatek Electro RN-119 distinguishes itself from many basic voltage monitoring relays with its advanced features and user-friendly design.
– Digital Display & Programmability: Many simpler relays use only status LEDs and analog potentiometers for settings. The RN-119’s 3-digit LED display provides real-time voltage readings and allows for precise digital programming of voltage thresholds and time delays. This offers greater accuracy and ease of use.
– Neutral Break Protection: While some relays protect against over/under voltage, the specific inclusion of neutral break protection is a notable advanced feature. This protects against a critical and potentially devastating fault condition that basic relays may not detect.
– Adjustable ON Delay: The ability to set an adjustable ON delay from 5 to 900 seconds is a significant advantage. This feature is crucial for protecting motor-based appliances, which can be damaged by frequent power interruptions and restorations. Many basic relays have a fixed or no time delay.
– True RMS Measurement: The RN-119 measures the true RMS voltage, which provides a more accurate reading of the voltage even when the waveform is distorted by harmonics.
The RN-119 is a more sophisticated and reliable solution for protecting single-phase loads compared to basic, non-programmable relays. Purchase online from https://intelli-electro.com/product-category/product-categories/single-phase-voltage-relay/