Siemens 7KG9501-0AA01-2AA1 Protection Relay

Siemens 7KG9501-0AA01-2AA1 Protection Relay / Power Quality Instrument

Product Overview

The Siemens 7KG9501-0AA01-2AA1 is a SICAM Q100 Multifunctional Power Quality Instrument (PQI-A) designed for power monitoring and power quality analysis in electrical distribution systems. It is used for measuring voltage, current, power quality parameters, recording disturbances, and communicating measurement data to energy management systems.

Note: This model is not a traditional protection relay. Its correct product category is Power Quality Monitoring Instrument / Multifunction Meter.

Main Specifications

• Manufacturer: Siemens
• Model: 7KG9501-0AA01-2AA1
• Product Type:
  • SICAM Q100 Power Quality Instrument
  • Multifunctional Power Monitoring Device
• Display:
  • LCD graphical display
• Installation:
  • Panel flush mounting
• Dimensions:
  • 96 × 96 × 100 mm
• Power Supply:
  • 24–230 VDC
  • 110–230 VAC
• Measurement Inputs:
  • 4 AC voltage measurement inputs
  • 4 AC current measurement inputs
• Digital Inputs:
  • 2 binary inputs
• Digital Outputs:
  • 2 binary outputs
• Communication Interfaces:
  • Ethernet RJ45
  • Ethernet switch
• Communication Protocols:
  • SNMPv3
  • Modbus TCP
  • IEC 61850 Server
• Memory:
  • 2 GB internal memory
• Time Synchronization:
  • NTP support
• Certifications:
  • CE
  • UL

Advantages & Features

• Advanced power quality monitoring and analysis
• Measures electrical parameters and detects disturbances
• Supports IEC 61850 communication for modern substations
• Built-in web server for configuration and visualization
• Large internal memory for event and measurement recording
• Ethernet communication simplifies system integration
• Compact 96 mm panel installation design
• Suitable for continuous industrial monitoring

Applications

• Power distribution systems
• Industrial electrical networks
• Substations
• Energy management systems
• Manufacturing plants
• Data centers
• Utility monitoring systems
• Power quality analysis projects

Important Notes

• Verify voltage/current transformer (CT/PT) ratios before commissioning.
• Confirm communication protocol compatibility with the control system.
• This device is mainly for monitoring and power quality analysis, not direct circuit breaker protection.
• Ensure correct wiring of voltage and current measurement inputs.
• Installation should follow Siemens electrical safety requirements.