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K8DS
K8DS Series: Single-Phase Voltage and Phase Sequence Relays
The K8DS series from Omron represents a family of single-phase voltage monitoring relays and phase sequence relays designed for industrial power quality supervision. These devices are engineered to detect overvoltages, undervoltages, and phase sequence errors in single-phase AC systems, ...
K8DS Series: Single-Phase Voltage and Phase Sequence Relays
The K8DS series from Omron represents a family of single-phase voltage monitoring relays and phase sequence relays designed for industrial power quality supervision. These devices are engineered to detect overvoltages, undervoltages, and phase sequence errors in single-phase AC systems, typically operating at nominal voltages from 100 to 240 VAC. Key technical parameters include adjustable voltage thresholds, hysteresis settings, and response times, ensuring precise monitoring of supply conditions. The relays feature a compact DIN-rail mountable housing with IP20 protection, making them suitable for integration into control panels. They are equipped with SPDT or DPDT output contacts rated for switching currents up to 5A at 250VAC, providing reliable signaling for alarm or trip functions. The K8DS series is known for its high accuracy and stability, with built-in time delays to prevent nuisance tripping due to transient disturbances.
These relays are primarily deployed in industrial automation, building management, and infrastructure applications where maintaining stable voltage levels is critical. Common installation environments include motor control centers (MCCs), distribution boards, and process control panels. They are used to protect sensitive equipment such as PLCs, drives, and instrumentation from voltage anomalies that could cause damage or downtime. In HVAC systems, they monitor supply voltage to chillers and compressors, while in water treatment plants, they ensure reliable operation of pumps and valves. The K8DS also finds application in renewable energy systems, such as solar inverters, where voltage fluctuations can affect efficiency. Their ability to detect phase sequence errors makes them valuable in three-phase systems where single-phase monitoring is required, such as in backup generator controls.
The K8DS series includes several subcategories based on functionality. The K8DS-PA is a voltage monitoring relay with adjustable overvoltage and undervoltage detection, featuring a setting range of 0.1 to 1.0 seconds for response time. The K8DS-PH is a phase sequence relay designed for single-phase systems, detecting phase loss and reversal with a fixed hysteresis of 5%. The K8DS-PU combines both voltage and phase monitoring in a single unit, offering dual functionality. Article codes typically follow the pattern K8DS-XXX, where XXX denotes the specific model variant (e.g., K8DS-PA1, K8DS-PH2). These relays are available with different output configurations, including relay or transistor outputs, and optional LED indicators for local status display. Accessories like socket adapters and mounting brackets are also available to facilitate installation.
At Electric Automation Network, we provide the K8DS series with real-time pricing and global express shipping, ensuring fast delivery to any location. Our team of specialized engineers offers personalized technical support to help you select the correct relay for your application, including guidance on threshold settings and wiring configurations. Each product listing includes detailed documentation, such as datasheets and wiring diagrams, to simplify integration. Whether you need a single unit for a pilot project or bulk quantities for a large installation, we ensure competitive pricing and reliable logistics. Contact us for assistance with voltage monitoring solutions tailored to your industrial needs.
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