GRV8-05 Voltage Relay YWBLWH Monitoring with 8 Adjustable Voltages

Description

Product Overview

The GRV8-05 Voltage Relay by YWBLWH is a precision engineered phase monitoring device designed for demanding industrial environments. Built to meet IEC standards, this three‑phase relay offers eight selectable voltage thresholds ranging from low to high settings, allowing fine‑tuned protection for a wide variety of equipment. Its measurement accuracy of less than 1% ensures that voltage fluctuations are detected early, preventing costly downtime. The unit measures true RMS voltage, providing reliable data even under non‑sinusoidal conditions. Housed in a rugged ABS enclosure, the relay measures 3.94 x 1.18 x 2.76 inches and weighs only 2.47 ounces, making it ideal for space‑constrained panels. The integrated LED indicator displays real‑time operational status, while the compact 35 mm DIN‑rail mounting format simplifies installation and maintenance.

Usage

Designed for versatility, the GRV8-05 excels in applications such as tower cranes, elevators, agricultural machinery, and refrigerated transport vehicles. In crane operations, the relay safeguards motor drives by detecting phase loss or reversal, ensuring safe lifting cycles. Elevator control systems benefit from its rapid response to voltage anomalies, reducing the risk of sudden stops. Agricultural equipment, which often operates in remote locations with variable power quality, relies on the relay to maintain consistent performance. Refrigerated trucks, carrying perishable goods, use the device to protect temperature control units from power disturbances, preserving cargo integrity. The relay’s ability to monitor its own supply voltage adds an extra layer of reliability, making it a trusted component for both primary and backup power sources.

Why Choose Us

Choosing the GRV8-05 means selecting a product backed by rigorous quality assurance and a reputation for durability. YWBLWH manufactures each unit with strict tolerances, ensuring consistent performance across batches. The relay undergoes comprehensive testing for temperature extremes, vibration, and electrical stress, guaranteeing long‑term reliability in harsh industrial settings. Our dedicated technical support team provides installation guidance, troubleshooting assistance, and firmware updates when applicable. Additionally, the relay is supported by a clear warranty policy, reflecting our confidence in its construction. By integrating this relay, customers benefit from reduced maintenance costs, enhanced equipment lifespan, and improved safety compliance.

Key Features

• Eight adjustable voltage thresholds give precise control over protection settings.
• Sub‑1% measurement accuracy ensures early detection of voltage irregularities.
• Compact 35 mm DIN‑rail design saves space and simplifies panel integration.
• LED status indicator provides instant visual feedback for quick diagnostics.
• Responsive customer support and warranty coverage for peace of mind.

FAQ

What types of equipment can benefit from the GRV8-05 relay?

The relay is suitable for any three‑phase equipment that requires voltage monitoring, including cranes, elevators, agricultural machines, and refrigerated transport units.

How does the relay detect phase failure?

It continuously measures true RMS voltage on each phase and compares it to the selected thresholds. If a phase drops below the set limit or reverses, the relay triggers an alarm or shuts down the load.

Can the relay be used with both primary and emergency power sources?

Yes, the device can monitor its own supply voltage, making it effective for switching between main and backup power without losing protection functionality.

What is the recommended installation method?

Mount the relay on a standard 35 mm DIN rail within a control panel, connect the voltage inputs to the monitored circuit, and wire the output contacts to the load or alarm system as per the wiring diagram.

Is there a warranty or after‑sales service available?

YWBLWH provides a one‑year limited warranty covering manufacturing defects, along with access to technical support for installation and troubleshooting assistance.