Intelligent Self-Restoring Dual-Display 10kva Single-Phase Voltage Stabilizer Over-Voltage Under-Voltage Protector

Quick Detail:

1. voltage protection relay,over and under voltage protector

2. Detect the voltage level in the circuit and automatically take protective measures when abnormal voltage occurs

Description:

Precision Over/Under Voltage Protector: The Intelligent Guardian of Electrical Equipment Integrity

In an increasingly electrified world, the stability of mains power can no longer be taken for granted. Voltage fluctuations—both surges (overvoltage) and sags (undervoltage)—are silent, pervasive threats to sensitive electronic equipment, industrial machinery, and essential home appliances. These irregularities, stemming from grid faults, heavy machinery cycling, or unreliable rural supply, can lead to catastrophic equipment failure, data corruption, reduced lifespan of components, and significant operational downtime. The Precision Over/Under Voltage Protector is engineered as the definitive solution to this critical challenge. Far more advanced than a simple circuit breaker, it is an intelligent, programmable monitoring device that acts as a vigilant gatekeeper for your electrical circuits. By continuously analyzing supply quality and disconnecting loads during dangerous voltage excursions, it provides an indispensable layer of protection, ensuring operational continuity and safeguarding valuable assets from the damaging effects of an unstable power grid.

Intelligent, Programmable Protection for Customized Scenarios

The core intelligence of this protector lies in its fully user-configurable parameters, allowing it to be tailored to the specific sensitivity of the connected load and the norms of the local power grid.

• Adjustable Voltage Thresholds: Users can precisely define the safe operating window. The Overvoltage Trip Setting is adjustable from 230V to 300V, while the Undervoltage Trip Setting can be configured between 210V down to 140V. This granularity is crucial; for instance, a sensitive CNC machine may require a tight window (e.g., 200V-240V), while a water pump might tolerate a wider range.
• Configurable Time Delays: To prevent nuisance tripping from momentary, harmless spikes or sags, the device features an adjustable Trip Delay (0.1 to 30 seconds). This allows it to distinguish between transient fluctuations and sustained, hazardous conditions. Furthermore, the Reset/Start Delay (1 to 500 seconds) ensures that after a trip event, power is only restored once the supply has stabilized for a user-defined period, protecting equipment from repeated on/off cycling during erratic grid conditions.

Robust Performance and Wide Operational Compatibility

Designed for universal single-phase applications, this protector boasts specifications that ensure reliability across diverse environments.

• Broad Voltage & Current Range: With an astonishing operational voltage range of AC 80V to 400V and a Rated Current of 40A or 63A (as labeled), it can function in severely under-voltage rural areas and withstand high-voltage surges, making it suitable for global use. Its Rated Supply Voltage is 220V at 50/60Hz, covering standard frequencies worldwide.
• High Accuracy & Durability: The integrated voltage measurement system offers an accuracy of 2%, ensuring reliable and precise monitoring for correct decision-making. Built for endurance, it features a long Electrical Life of 100,000 operations and a Mechanical Life of 1,000,000 operations. The 1NO (Normally Open) output contact provides a simple and reliable switching mechanism to control the load circuit.

Engineered for Demanding and Harsh Environments

True reliability is tested under extreme conditions, and this protector is built to deliver.

• Exceptional Temperature Tolerance: Its operational temperature range of -50°C to +55°C is exceptionally wide, guaranteeing performance in freezing outdoor enclosures, unheated industrial sheds, or hot rooftop installations. The storage temperature ranges from -30°C to +70°C.
• Robust Safety and Environmental Ratings: With a Rated Insulation Voltage of 400V and designed for use at altitudes up to 2000 meters, it meets stringent safety requirements. The IP20 degree of protection safeguards against finger contact with live parts, while its construction is rated for Pollution Degree 3, indicating suitability for industrial environments where conductive pollution or dry, non-conductive pollution that becomes conductive due to condensation may be present. It operates reliably at up to ≤50% relative humidity at 40°C (non-condensing).

Critical Applications Across Sectors

The versatility of this programmable protector makes it essential in numerous settings:

• Industrial Automation: Protects PLCs, servo drives, robotics, and CNC machines from voltage variations that can cause faulty operation or permanent damage.
• Renewable Energy Systems (Off-Grid/Grid-Tie): Safeguards inverters, charge controllers, and batteries in solar or wind systems where voltage can fluctuate significantly.
• Commercial and Residential Use: Protects refrigerators, air conditioners, furnaces, home theaters, and medical equipment in the home, as well as POS systems, refrigeration units, and elevators in commercial buildings.
• Agricultural and Rural Installations: Essential for protecting irrigation pumps, milking machines, and other critical equipment in areas with long, weak power lines prone to severe voltage drops.

Conclusion: The Essential Foundation for Electrical System Resilience

The Precision Over/Under Voltage Protector is more than a safety device; it is a strategic investment in the longevity and reliability of any electrical system. In a landscape of unpredictable power quality, it provides a proactive, intelligent defense mechanism. By offering programmable precision, robust environmental endurance, and adaptable protection for a vast range of loads, it delivers unparalleled peace of mind. For facility managers, it prevents costly downtime and repairs. For homeowners, it preserves major appliance investments. For system integrators, it is a reliable, configurable component that enhances overall system design. Installing this protector is a definitive act of system hardening—ensuring that the lifeblood of electricity powers your equipment safely and consistently, guarding against the invisible but costly threat of voltage instability. It is the dedicated sentinel that stands between your valuable equipment and the imperfections of the power grid.

Competitive Advantage:

Advantages of Wenzhou DAQUAN Electric Co., Ltd

1. Innovation Leadership

With 258 patents and 27 years of industry experience, we lead in R&D of industrial control devices like relays and timers, ensuring cutting-edge product performance.

2. Global Certifications

Our products hold CE, ROHS, IEC, TUV certifications plus ISO9001, meeting strict international standards for seamless global market access.

3. Scale Supply Stability

Backed by a 7,800㎡ factory, 499-strong team, and 70M RMB annual output, we guarantee efficient production and timely delivery for bulk orders.