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Help CenterDigital Meter Relay for Single Phase Voltage Protection, 90V-280V Range
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As a dedicated manufacturer of electrical protection solutions, Jinhua Dika Electrical Equipment Co., Ltd. proudly presents our advanced Digital Meter Relay for Single Phase Voltage Protection. Engineered for reliability and precision, this device is a cornerstone for safeguarding sensitive equipment against voltage fluctuations, ensuring operational stability and preventing costly downtime. With over a decade of experience in exporting high-quality electrical components to global markets, we understand the critical need for robust protection in diverse industrial and commercial applications. This digital meter relay represents our commitment to delivering innovative, user-friendly, and dependable solutions that meet the stringent demands of modern electrical systems.
Our single-phase voltage protection relay is designed to continuously monitor the supply voltage within a wide range of 90V to 280V. It provides accurate, real-time digital readouts, allowing for immediate visual confirmation of the line condition. The core value of this product lies in its ability to automatically detect under-voltage, over-voltage, and phase loss conditions, triggering its relay output to isolate the protected circuit or activate an alarm. This proactive protection is essential for a wide array of equipment, including:
- Industrial Machinery: Prevents motor burnout and control system failures.
- HVAC Systems: Protects compressors and fans from voltage-related stress.
- Commercial Refrigeration: Safeguards refrigeration units to maintain temperature integrity.
- Telecom and Server Racks: Ensures stable power for critical IT infrastructure.
- Agricultural Equipment: Protects pumps and automated systems in remote locations.
The relay incorporates a high-brightness digital display that shows the measured voltage value clearly. Setting the protection thresholds is intuitive, often achieved through front-panel buttons or dip switches, eliminating the need for complex programming tools. This ease of use reduces installation time and minimizes the potential for configuration errors. The device is housed in a compact, DIN-rail mountable enclosure, making it ideal for integration into control panels, distribution boards, and motor control centers where space is at a premium. Its robust construction ensures reliable performance in environments with electrical noise and varying temperatures.
Beyond basic protection, this digital meter relay offers several technical advantages. It typically features a fast response time, detecting voltage anomalies within milliseconds to provide the quickest possible reaction. Many models include a configurable delay timer for both activation and reset, which helps to avoid nuisance tripping caused by brief, harmless voltage sags or surges. The relay output is usually a robust, changeover (SPDT) contact rated for a specific current, capable of directly controlling contactors, alarms, or other shutdown mechanisms. Let's examine some typical technical specifications that define its performance:
| Parameter | Specification / Feature |
|---|---|
| Operating Voltage Range | 90 - 280V AC |
| Measurement Accuracy | Typically ±1% of full scale |
| Output Contact | 1 Changeover (SPDT) Relay |
| Contact Rating | e.g., 5A @ 250V AC / 30V DC |
| Response Time | |
| Setting Method | Push Buttons or DIP Switches |
| Display | 3 or 4-digit LED/LCD |
| Mounting | Standard 35mm DIN Rail |
For businesses, the benefits are clear and measurable. First, it enhances equipment lifespan by preventing operation outside safe voltage parameters, which reduces wear and tear. Second, it minimizes unplanned downtime and associated production losses by providing an early warning or automatic shutdown before damage occurs. Third, it improves safety by preventing electrical fires or hazards that can stem from faulty voltage conditions. Finally, it offers peace of mind through continuous monitoring, which is especially valuable for unattended or remote equipment. The initial investment in such a protection device is quickly offset by the avoidance of a single major repair or replacement event.
Jinhua Dika Electrical Equipment Co., Ltd. stands behind this product with the solid foundation of a manufacturer serving a global clientele across North America, Europe, Asia, and beyond. Our annual export volume reflects the trust placed in our products by international buyers. We support our shipments through major ports like Shanghai, Tianjin, Guangzhou, and Ningbo, ensuring efficient logistics. While we maintain a comprehensive approach to quality management, specific product certifications for this relay can be confirmed upon request. Choosing our digital meter relay means partnering with a company dedicated to electrical safety and reliability, backed by a workforce focused on precision manufacturing. We encourage you to contact us for detailed specifications, pricing, and to discuss how this voltage protection solution can be integrated into your specific application to safeguard your valuable assets.
Frequently Asked Questions (FAQ)
Q1: What is the main purpose of this digital meter relay?
A1: Its primary purpose is to protect single-phase electrical equipment by continuously monitoring the supply voltage. It will automatically trip its output relay if the voltage falls below (under-voltage) or rises above (over-voltage) the user-set thresholds, thereby disconnecting the load to prevent damage.
Q2: Can this relay be used for three-phase systems?
A2: This specific model is designed for single-phase voltage monitoring. For three-phase systems, we offer dedicated three-phase voltage monitoring relays that can detect phase loss, imbalance, and incorrect sequence in addition to voltage faults.
Q3: How do I set the voltage trip points?
A3: Setting is typically straightforward. Most models use up/down buttons on the front panel to adjust the high and low setpoints, which are then displayed on the digital screen. Some versions may use potentiometers or DIP switches. The exact method will be detailed in the product manual.
Q4: Does it require an external power supply to operate?
A4: No, it does not require a separate power supply. The relay is powered directly from the same single-phase line voltage (within the 90V-280V range) that it is monitoring, making installation simple and reducing wiring complexity.
Q5: What happens after a trip? Does it reset automatically?
A5: The reset behavior is often configurable. It can be set to auto-reset once the voltage returns to the normal range for a preset time delay, or it can be set for manual reset via a button. The manual reset option is useful for ensuring an operator investigates the cause of the fault.
Q6: What is the physical size and how is it mounted?
A6: The relay is designed for compact panel mounting. It conforms to a standard module width (e.g., 22.5mm or 45mm) and is mounted on a 35mm DIN rail, which is the industry standard for control panels and electrical enclosures.
Q7: Can it be used in outdoor or harsh environments?
A7: The standard model is designed for indoor use in control panels. For outdoor or harsh environments (with dust, moisture, or extreme temperatures), please inquire about models with higher ingress protection (IP) ratings or specialized enclosures.
Q8: What is the typical delivery time for an order?
A8: As a manufacturer, we maintain stock for standard models. Delivery time depends on order quantity and destination. Shipments are efficiently handled through major Chinese ports. Please contact our sales team for an accurate lead time based on your specific requirements.
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