Fluke PQ400 Electrical Measurement Window

Fluke PQ400 Electrical Measurement Window

Product Description and Specifications – Fluke PQ400 Electrical Measurement Window

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Product Overview Fluke PQ400 Electrical Measurement Window:

Fluke PQ400 Electrical Measurement Window provides secure and instant access to critical power quality and energy data—without the need to open panel doors. Designed to reduce arc flash risks and improve safety during power quality analysis, the PQ400 enables uninterrupted measurements with minimal disruption to operations.

This permanently installed interface helps reduce testing time, lower maintenance costs, and enhance worker safety by eliminating the need for direct contact with live components during routine monitoring. It’s a powerful tool for professionals seeking compliance, efficiency, and safety—without compromise.

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Key Features Fluke PQ400 Electrical Measurement Window:

• Enhanced Safety: Enables critical power quality and energy measurements without opening the panel door, minimizing arc flash and shock hazards.

• Continuous Monitoring Without Interruptions: Take measurements anytime without interrupting operations or requiring shutdowns.

• Reduces Permit Requirements: Lowers the need for arc flash PPE and permits by eliminating the risk of working on exposed live panels.

• Built-in Voltage and Current Sensors: Permanently installed inside the panel to provide safe access to measurement points from the outside.

• Automatic Probe Detection: Works seamlessly with Fluke 1740 and 1730 series loggers—no need to open cabinets to verify clamp compatibility.

• Full 360° Orientation: PQ400 window can be installed in any direction for flexible placement.

• Easy Installation: Mounts quickly using a step drill and hydraulic punch (hole size: 114.3 mm / 4.5 in).

• High Safety Ratings: Rated CAT IV 600 V and CAT III 1000 V as per IEC61010-2-030 standards.

• Standard 4mm Safety Socket Compatibility: Compatible with common voltage test leads, improving operator safety and reducing the need for custom cables.

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How It Works:

The Fluke PQ400 is a permanently installed interface mounted onto electrical panels. It allows users to connect voltage, current, and ground leads through an external access window—without opening the panel. After installation, simply unlock and open the window, connect your logger’s voltage and current leads to the front panel, and begin your power quality measurements. Once complete, disconnect the test leads and close the window. The internal connections remain ready for future use, ensuring safe and efficient recurring measurements.

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Technical Specifications:

General Specifications:

• Max Voltage Between Terminals and Ground: 1000 V (voltage), 30 V (current)

• Safety Standards:

  • IEC 61010-1 (Pollution degree 2)

  • IEC 61010-2-030: CAT IV 600 V / CAT III 1000 V

Dimensions:

• Outer: 148 mm x 23 mm x 187 mm (W x D x H)
  (370 mm height with the cover open)

• Inner: 140 mm x variable x 158 mm (W x D x H)

  • D = panel door thickness (max 3.5 mm / 10 gauge)

Environmental Ratings:

• Operating/Storage Temperature: -25 °C to 60 °C (-13 °F to 140 °F)

• Humidity:

  • 10% to 90% depending on temperature (IEC 60721-3-3 Class 3K6)

• Altitude:

  • Operating: Up to 2000 m (derated up to 4000 m: CAT II 1000 V, CAT III 600 V, CAT IV 300 V)

  • Storage: Up to 12,000 m

• Ingress Protection:

  • IP67 with the cover closed

  • IP50 with the cover open and connectors attached

• Vibration Resistance:

  • IEC 60068-2-6, MIL-PRF28800F Class 2

• Weight: 2.1 kg (4.6 lb)

Voltage Input/Output:

• Inputs: 5 connections (A/L1, B/L2, C/L3, Neutral, Ground)

• Wire Gauge Supported: Solid/flexible 0.25 mm² to 1.5 mm² (AWG 24–16)

• Max Voltage Input: 1000 V

• Fuse Rating: 2 A, 1000 V, 1.5 A²s, 10 kA interrupt rating

• Outputs:

  • 5x 4 mm safety terminals

  • Red (A/L1, B/L2, C/L3), Black (Neutral), Green (Ground)

  • Max current load: 1 A RMS

Current Input/Output:

• Connectors: 5x 4-pin circular connectors compatible with:

  • Fluke 354x FC, 173x, and 174x series loggers

  • All supported loggers can be powered from measured voltages up to 500 V

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Summary:

The Fluke PQ400 Electrical Measurement Window offers a revolutionary approach to power quality monitoring by providing safe, efficient access to three-phase voltage and current measurements—without opening panel doors. With high safety ratings, permanent internal sensors, and compatibility with Fluke power quality loggers, it reduces downtime, improves worker safety, and streamlines testing operations. It’s the ideal solution for facilities that demand compliance, safety, and efficiency in electrical measurements.