Fluke PQ400/B Basic Power Quality and Electrical Measurement Window


Key Features:

  • Reduced risk—Permanently installed voltage and current connections can be accessed without opening the panel door
  • Increased efficiency—Quickly connect your logger or analyzer and begin taking measurements faster than ever
  • Easy installation—A standard step drill bit and electro-hydraulic hole punch provide the simple means to quickly mount the window in the panel
  • Permanently connected voltage and current sensors located inside the electrical panel allow you to make power quality and energy measurements using the external access points without opening the panel door, reducing operator risk
  • Voltage and current connections for three-phase voltages, neutral and ground cover most measurement scenarios
  • Automatic probe detection for Fluke 1740 and 1730 series power quality and energy loggers and compatible clamps, eliminates the need to open cabinet to check the clamp model
  • Full 360 degree rotation allows the PQ400 window to be oriented in any direction
  • Simple installation using a step drill bit and electro-hydraulic hole punch (114.3 mm, 4.5 inch diameter)
  • CAT IV, 600V and CATIII 1,000V rating according to IEC61010-2-30
  • Compatibility with standard 4mm shrouded safety-socket voltage test leads makes it easier to make voltage connections, increases safety by reducing the risk of accidently touching live electrical components, and reduces the need for purchasing specialized voltage leads

Secured and trusted checkout with

Fluke’s PQ400 Electrical Measurement Window allows the connection of three phase measurement equipment to energized panels, eliminating the need to open the panel door, or wear supplemental personal protective equipment (PPE). The PQ400 provides access to crucial power quality and energy data, all while diminishing testing time and assisting in maintaining user safety.

The Fluke PQ400 is loaded with features functions and benefits:

  • • Decrease the possibility of arc-flash and electrocution, while improving the safety of employees
  • Reduce maintenance costs and diminish downtime by making critical power quality and energy measurements without opening the panel door, enabling logging and monitoring at any time—without disrupting operations
  • Lessen work permit requirements and processes by limiting the risks associated with taking measurements on open panels, saving time and effort
  • Increase measurement efficiency and lessen the need for arc-flash PPE1, saving time, increasing efficiency and increasing operator comfort
Number of inputs 5 (A/L1, B/L2, C/L3, N, and earth/ground)
Wire gauge Solid/flexible: 0.25 mm² to 1.5 mm² (AWG 24 to AWG 16)
Voltage Max. 1000 V
Fuse 2 A 1000 V 1.5 A²s, 10 kA IR (A/L1, B/L2, C/L3, N)
Connectors 5x 4 mm safety terminals, 3x red for A/L1, B/L2, C/L3, 1x black for N, 1x green for earth/ground
Load current Max. 1 A rms
Connectors 5x 4-pin circular compatible with Fluke 354x FC, 173x, and 174x power and power quality loggers (these loggers can all be power from the measured voltage up to 500V)v
General specifications
Maximum voltage between any voltage terminal and earth ground 1000 V
Maximum voltage between any current terminal and earth ground 30 V
General IEC 61010-1: pollution degree 2
Measurement IEC 61010-2-030: CAT IV 600 V / CAT III 1000 V
Outside 148 mm x 187 mm x 23 mm (W x H x D) (148 mm x 370 mm x 19 mm with cover opened)
Inside 140 mm x 158 mm x Di (W x H x D) Di = 58 – thickness of panel door in mm
Supported electrical enclosures
Enclosure UL 50/NEMA environmental type 1 (Type 12 when PQ400 cover is closed)
Panel thickness Max. 3.5 mm (10 gauge)
Operating/storage temperature -25 °C to 60 °C (-13 °F to 140 °F)
Humidity 10 % to 90 % in dependency of temperature according to IEC 60721-3-3 Class 3K6 (modified):-25 °C to 35 °C: 10 % to 90 %, 50°C: max. 35 %, 60°C: max. 23 %
Operating 2,000 m (up to 4000 m derate to CAT II 1000 V, CAT III 600 V, CAT IV 300 V)
Storage 12,000 m
Ingress protection
Rating IEC 60529: IP67 with cover closed, IP50 with cover opened and all connectors attached
Vibration IEC 60068-2-6 , MIL-PRF28800F: Random vibration class 2
Weight 2.1 kg (4.6 lb)


Write Your Own Review
Only registered users can write reviews. Please Sign in or create an account

Products In This Series

As low as

Now $2,279.99