High-Precision Phase Monitoring Relay K8DT-PH1CN for Voltage Protection
High-Precision Phase Monitoring Relay K8DT-PH1CN for Voltage Protection
SKU:K8DT-PH1CN
Package size: 16X15X8CMProduct Overview
The Omron K8DT-PH1CN is a high-performance phase-sequence and phase-loss monitoring relay designed to safeguard three-phase electrical systems against critical faults. This industrial-grade protective relay continuously monitors for incorrect phase sequence (phase reversal), phase loss (single phasing), and voltage unbalance conditions that could damage sensitive equipment. Engineered for reliability in demanding environments, the K8DT-PH1CN helps prevent costly downtime by detecting power anomalies before they cause equipment failure.
Key Features and Benefits
- Wide Voltage Range: Operates with 200-480V AC power systems at both 50Hz and 60Hz frequencies, making it suitable for global industrial applications
- Precision Monitoring: Detects phase sequence errors within 0.1-2 seconds (adjustable response time) to prevent reverse rotation of motors
- Robust Output: SPDT relay contact rated for 5A at 250V AC (resistive load) for direct control of circuits or alarm systems
- Compact Design: Space-saving 22.5mm width allows high-density DIN rail mounting in control panels
- Energy Efficient: Low power consumption (maximum 3.5VA) reduces operational costs
- Durable Construction: Industrial temperature range (-10°C to +55°C) ensures reliable operation in harsh environments
- Visual Indicators: Clear status LEDs for power and fault conditions enable quick troubleshooting
- 1-Year Warranty: Backed by Omron's standard manufacturer warranty against defects
Industrial Applications
- Motor Protection: Essential for safeguarding three-phase motors in pumps, compressors, fans, and conveyor systems from damage caused by phase faults
- HVAC Systems: Protects commercial and industrial air conditioning units from improper phase conditions
- Manufacturing Equipment: Critical for CNC machines, injection molding equipment, and other automated systems requiring stable three-phase power
- Power Distribution: Used in panel builders and electrical installations to monitor incoming three-phase power quality
- Renewable Energy: Provides phase monitoring for solar inverters and wind turbine connections to the grid
Detailed Technical Specifications
| Parameter | Specification |
|---|---|
| Model Number | K8DT-PH1CN (Omron genuine part) |
| Input Characteristics | 200-480V AC ±10%, 50/60Hz (phase-to-phase voltage) |
| Output Relay | 1 SPDT (Form C) contact, 5A at 250V AC (resistive load), 30,000 operations minimum |
| Phase Loss Detection | Detects when any phase voltage drops below 70% of rated voltage |
| Unbalance Detection | Triggers when voltage difference between phases exceeds 20% |
| Response Time Adjustment | 0.1s (fast) to 2s (slow) via internal DIP switch settings |
| Mechanical Dimensions | 22.5mm (W) × 90mm (H) × 55mm (D) (conforms to standard DIN rail sizing) |
| Mounting | 35mm DIN rail (EN 60715 compliant) with snap-on attachment |
| Electrical Connections | Screw terminals (accepts 1.5mm² to 2.5mm² wire) |
| Isolation Voltage | 2500V AC for 1 minute between coil and contacts |
| Ambient Conditions | -10°C to +55°C operation, 85% RH max (non-condensing) |
| Storage Temperature | -25°C to +65°C |
| Weight | 150g ±5% (excluding packaging) |
| Certifications | CE marked, UL recognized (file E69938), cULus listed |
Why Choose the Omron K8DT-PH1CN?
Omron's K8DT series relays are trusted by industrial engineers worldwide for their precision and reliability. The K8DT-PH1CN model provides essential protection for three-phase systems with its fast response time and durable construction. Its adjustable sensitivity allows customization for different applications, while the compact design saves valuable panel space. With clear fault indication and simple installation, this phase monitoring relay offers an optimal balance of performance and value for commercial and industrial power systems.
