Microcomputer Integrated Protection Device LY-Z9100

Product Advantages

Advanced Digital Signal Processing

Equipped with state-of-the-art digital signal processing technology, the device captures and analyzes power system parameters (current, voltage, frequency) with high efficiency and precision, enabling rapid fault detection and response.

Flexible Parameter Configuration

Users can dynamically set and adjust protection parameters via intuitive interfaces, tailoring the device to specific power system characteristics and adapting to changing working conditions or environmental requirements.

Remote Monitoring & Control

Supports RS485 communication protocol, enabling remote monitoring and control. Operation and maintenance personnel can oversee the power system from any location, reducing on-site workload and improving management efficiency.

Intelligent Self-Diagnostic Function

Built-in self-diagnostic capabilities continuously monitor the device’s hardware and software status, promptly identifying potential issues (e.g., CT/PT disconnection) and issuing alarms to minimize downtime.

Comprehensive Protection Coverage

Offers a full range of protection functions, including overcurrent protection, overvoltage protection, zero sequence overcurrent protection, and motor starting overcurrent protection, safeguarding equipment against diverse electrical faults.

Wide Power Supply Compatibility

Operates on an AC/DC 85-265V working power supply, ensuring stable performance in regions with fluctuating voltage inputs.

Technical Specifications

Core Parameters

The LY-Z9100 features a rated voltage of 100V and rated current of 5A, with a robust RS485 communication port for data transmission. It excels in protection and monitoring, lacking only current measurement, general measurement, and automatic backup power supply functions. Key protection capabilities include quick break, definite time overcurrent, inverse time overcurrent, overload alarm, and non-power protection.

Detailed Function List

Applications

Distribution Line Protection & Transformer Protection

Shields 10kV and below transmission/distribution lines from overcurrent, short circuits, and voltage abnormalities, ensuring uninterrupted power delivery.

Monitors transformer operating status, preventing damage from overloads, phase imbalances, and insulation failures.

Capacitor Bank Protection & Motor Protection

Protects capacitor banks against overvoltage, overcurrent, and dielectric breakdown, extending equipment lifespan.

Guards motors during startup and operation with specialized overcurrent and phase protection, reducing motor burnout risks.

Ideal for manufacturing plants, refineries, and industrial parks, ensuring stable power for critical production equipment.

Selection Guide

Confirm System Voltage & Identify Protection Needs

Verify that the power system voltage is 10kV or below to match the device’s rated specifications.

List required protection functions (e.g., motor starting protection for industrial motors, zero sequence protection for grounded systems).

Check Communication Compatibility & Evaluate Environmental Conditions

Ensure the system supports RS485 communication for remote monitoring integration.

Confirm the installation environment meets the device’s operating temperature and humidity requirements.

Verify Power Supply

Ensure the working power supply ranges from AC/DC 85-265V for stable operation.

Operation Guide

Initial Setup & Parameter Configuration

Connect the device to the power supply (positive/negative terminals) and ground, then wire input/output signals according to the wiring diagram.

Access the device’s configuration interface to set protection thresholds (e.g., overcurrent pickup value) and communication parameters.

Daily Operation & Troubleshooting

Monitor the device’s running status via the front-panel indicators (run, alarm, trip) and check remote data regularly.

If an alarm is triggered, refer to the self-diagnostic report to locate issues (e.g., CT disconnection) and resolve wiring or parameter errors promptly.