Fluke 5322A Electrical Safety Tester Calibrator

The 5320A Multifunction Electrical Tester Calibrator is an accurate, flexible instrument that allows you to calibrate

The 5322A Electrical Tester Calibrator helps calibration technicians comply with new regulatory standards up to four times faster than with traditional manual, multiple-product methods. The 5322A replaces the 5320A Electrical Tester Calibrator.

The 5322A calibrator facilitates compliance with exacting international standards such as the United Kingdom's BS7671 17th Edition, IEC/EN Standards, Australia and New Zealand's AS/NZS 3000 and Chinese verification/calibration regulations for various electrical testers.

The 5322A combines many functions into a single instrument, replacing discrete resistors, decade boxes and other custom solutions commonly used to calibrate electrical testers. This single-box solution speeds and simplifies calibration because users only need to learn, operate and maintain one calibrator rather than multiple instruments. And while it's difficult to automate multiple instruments, the 5322A can be automated with MET/CAL® Calibration Software ”further increasing speed and throughput.

Calibrate all major types of electrical safety testers with just one calibrator. The 5322A calibrates all major categories of electrical safety testers. The benefits of this calibrator are best described by the key functionality it brings to calibrating the individual workloads.

Broad workload coverage

The 5322A calibrates a broad range of equipment, including:

  • Hipot testers
  • Insulation resistance testers (megohm-meters) including older analog testers
  • Loop/line impedance testers
  • Continuity testers
  • Earth resistance testers
  • Ground bond testers
  • Leakage current testers
  • Circuit breaker testers (RCD/GFCI)
  • Multifunction installation testers
  • Portable appliance testers (PATs)

Key features and benefits

Continuously variable high voltage resistance outputs source high-ohms, high voltage resistors to enable calibration of insulation resistance testers/megohmmeters up to 5 kV.  The continuously variable feature lets the user set any resistance value to match the device under test (DUT) requirement and adjust the 5322A output to a nominal value, which aids in calibrating older-style hand-cranked testers.

Active Loop Compensation makes it easier to calibrate the loop/line impedance function of an installation tester by canceling residual line impedance during calibrations.

600 V source (VLC option)allows calibration of ac voltage measurements on workloads with measurement capabilities. This feature is also useful for powering many types of PAT testers.

4-wire low resistance sources enable precision low current measurements and high current ground bond measurements, providing accuracy for testing newer 4-wire testers.

Optional 5322A-LOAD 5 kV high voltage load resistors include paralleling capability for precision hipot testing.

RCD simulation enables testing of installation and PAT testers with excellent time and current level accuracy. 5322A trip times provide better than 4:1 test uncertainty ratios with 1 % trip current uncertainty.

Ripple coefficient and THD measurements display hipot testers' signal purity measurements to 5 kV as required by many regulations.

Multiple models give you the flexibility to select the capabilities best suited to your workload and budget.

MET/CAL software compatibility automates the 5322A in 5320A emulation mode for improved throughput and greater consistency.

Maximize your workload coverage with the 5322A Calibrator

The 5322A Multifunction Electrical Tester Calibrator combines many electrical calibration functions into a single instrument, replacing the resistors, decade boxes and other custom solutions commonly used to calibrate electrical testers. It’s flexible and precise enough to calibrate a wide range of instrumentation.

Multifunction installation testers

The 5322A has all the functionality needed to calibrate installation testers with insulation resistance, continuity, loop, RCD and earth resistance test capabilities.

Portable appliance testers (PATs)

The 5322A has all the functionality needed to calibrate PATs, with insulation resistance, ground bond, leakage current, flash voltage and load test capabilities.

Insulation resistance testers

The 5322A calibrator sources high ohms, high voltage resistors and measures the high voltage output of megohm meters and other portable and bench insulation testers. When calibrating insulation resistance testers up to 1 kV, you can select a wide range of continuously variable resistance values, from 10 kΩ to 10 GΩ, with 4 ½ digit resolution and one single value of 100 GΩ. When calibrating 5 kV insulation testers, the external 10 kV dual function adapter extends the resistors’ range up to 10 TΩ. The adapter functions both as a 1000: 1 voltage divider to 10 kV, and as a x1000 resistance multiplier to 10 TΩ.

Continuity testers and earth (ground) resistance testers

To calibrate these low ohms testers, a calibrator must be able to source precision low ohms. From its low ohms precision resistors, the 5322A calibrator sources resistance values ranging from 100 mΩ to 10 kΩ, with 3 ½ digits of resolution. Choose 2-wire or 4-wire modes for maximum flexibility.

Loop/line impedance testers and ground bond testers

The 5322A calibrator has 16 high power, high current resistors it can source, to increase the resistance of a loop or line by a known amount. Use Scan mode to automatically determine the resistance of the loop, and use Active Loop Compensation mode to compensate for any residual impedance in the loop or line.

Residual-current device (RCD) or ground fault current interrupter (GFCI) testers

The 5322A simulates a circuit breaker (an RCD/GFCI) to verify and calibrate trip current and trip time, with a wide range that enables it to accurately handle most models in this instrument category. For most RCD testers, trip times are calculated to an uncertainty of 0.25 ms, to provide better than 4:1 test uncertainty ratios (TUR). Trip current uncertainty is 1 %, which also provides better than 4:1 TURs in most applications.

Leakage current testers

Simulate a leakage current for direct/ touch, differential and substitute leakage current methods with 4 ½ digit resolution from 0.1 mA to 30 mA. The 5320A lets you choose the method that works best for your test, unlike other calibrators that only offer a single method.


Many testers have built-in voltmeters. But you don’t need an additional calibrator to test this part of the workload. The model 5322/VLC calibrator adds a precision voltage source to 600 V with 0.1 % accuracy, to calibrate V ac and V dc meters.

Hipot testers

Electrical safety testing with hipots is an integral part of development and manufacturing of electronic and electrical products, ranging from refrigerators to power supplies to test equipment to cables. Such testing is often required by government regulations to ensure product safety. The Fluke 5322A provides best-in- class hipot calibration of ac and dc voltage. The built-in 1000 V meter measures voltage and current. For voltages over 1 kV, Fluke offers two accessory items: a 10 kV adapter or 40 kV probe. With the 10 kV adapter, ac voltages to 10 kV can be calibrated with 0.5 % accuracy. Either item can be used with the built-in meter to measure voltage or flash voltage over 1000 V.

Medical safety testers

With the broad functionality and high accuracy of the 5322A, calibrating medical safety testers is a snap, allowing you to add these items to your calibration workload.


General specifications

Specifications confidence level 99%
Specifications interval 1 year
Power line 115/230 V ac (50/60 Hz) +10 % / -14 %, with the maximum voltage difference between neutral and protective earth not exceeding 15 V. Operation with power line between -10 % and -14 % has limitations in burden current for voltage outputs. See AC/DC Voltage Calibrator (VLC option) below.
Power consumption 1250 VA maximum
Fuse protection

AC mains input: 2 A, 250 V for 230 V, time delay (T2L250 V – 5 mm x 20 mm) 4 A, 250 V for 115 V, time delay (T4L250 V – 5 mm x 20 mm)

RCD input: 3.15 A, 250 V, fast (F3.15H250 V – 5 mm x 20 mm)

Meter amps (A) input: 20 A, 500 V, time delay (F20H500 V – 6.3 mm x 32 mm)

Loop/Line impedance input: 4 A, 500 V, time delay (T4H500 V – 6.3 mm x 32 mm)

Leakage current input: 100 mA, 250 V, fast (F100 mL250 V – 5 mm x 20 mm)

Warm-up time 15 minutes
Temperature performance

Operating temperature: 18 °C to 28 °C

Calibration temperature (tcal): 23 °C

Temperature coefficient for temperatures outside of tcal ± 5 °C is 0.1 / °C of the specification, for temperatures between 5 °C to 40 °C.

Storage temperature : -10 °C to 50 °C

Storage recovery time: Typically <24 hours at operating temperature

Relative humidity (operating) <80 % to 28 °C (resistance outputs >10 GΩ specified for <70 % to 28 °C)
Relative humidity (storage) 90 % non-condensing 0 °C to 50 °C

Operating: 3050 m (10 000 ft)

Storage: 12 200 m (40 000 ft)

Dimensions and weight
Dimensions 430 mm x 555 mm x 170 mm (16.9 in x 21.8 in x 6.7 in)
Weight 20 kg (44.1 lb)

Mains: IEC 61010-1: Overvoltage category II, pollution degree 2

Measurement: IEC 61010-2-030: 5000 V (not category rated)

Electromagnetic compatibility (EMC)


  • IEC 61326-1: Basic electromagnetic environment
  • CISPR 11: Group 1, Class A
    • Group 1: Equipment has intentionally generated and/or uses conductively-coupled radio frequency energy that is necessary for the internal function of the equipment itself.
    • Class A: Equipment is suitable for use in all establishments other than domestic and those directly connected to a low-voltage power supply network that supplies buildings used for domestic purposes. There may be potential difficulties in ensuring electromagnetic compatibility in other environments due to conducted and radiated disturbances.Emissions that exceed the levels required by CISPR 11 can occur when the equipment is connected to a test object.

Korea (KCC):

  • Class A: Equipment meets requirements for industrial electromagnetic wave equipment and the seller or user should take notice of it. This equipment is intended for use in business environments and not to be used in homes.


  • 47 CFR 15 subpart B. This product is considered an exempt device per clause 15.103.

Electrical specifications

Low resistance source
Range 100 mΩ to 10 kΩ + 10 mΩ single value selection, dc and line frequency (50/60 Hz)
1.5 kV high resistance source (DC only)
Range 10 kΩ to 10 GΩ + 100 GΩ single value selection
5.5 kV high resistance source (DC only) (5322A with /5 option)
Range 10 kΩ to 100 GΩ
Test voltage measurement
Range 0 V dc to 5500 V dc
Ground bond resistance source
Resistance mode
Range 1 mΩ to 1700 Ω, dc and line frequency (50/60 Hz)
Line/loop impedance source
Range 25 mΩ to 1700 Ω
Correction manual/scan mode
Residual impedance range 0 Ω to 10 Ω
Resolution 1 mΩ
Correction COMP mode (active loop compensation) (5322AVLC Option)
Maximum compensated impedance 0 Ω to 2 Ω
Leakage current source
Range 0.1 to 30 mA
Test voltage

Passive mode: 60 V ac to 250 V ac rms

Differential mode: 60 V ac to 250 V ac rms

Substitute mode:10 V ac to 250 V ac rms

Active mode (5322A/VLC only)[1]: 50 V ac to 100 V ac rms


Passive mode: ± (0.3% setting + 2 μA)

Differential mode: ± (0.3% setting + 2 μA)

Test uncertainty can be influenced by power line voltage instability

Substitute mode: ± (0.3% setting + 2 μA)

Active mode (5322A/VLC only)[1]: ± (0.3% setting + 1 μA)

  [1] The Active Mode outputs are synchronized with the ac mains frequency to suppress interference between the calibrator and external noise sources.
Human body simulation (for substitute leakage currently only

Resistance range: 0 Ω to 10 000 Ω

Resolution: 1 Ω

RCD (residual current device) (for installation testers)
Trip current range

0.5 X I and 1 X I Mode: 5 to 30 mA in 1 mA steps

1.4 X I and 2 X I Mode: 14 to 60 mA in 1 mA steps

5 X I Mode: 50 to 150 mA in 1 mA steps

Trip current measurement resolution

1 μA below 30 mA

10 μA in range from 30 mA to 150 mA

100 μA in range from 300 mA to 3 A

Trip current measurement uncertainty
Trip current ± 1 % of nominal current (I) setting
Trip time range 10 to 5000 ms
Trip time uncertainty (0.02 % setting + 0.25 ms)
Touch/line voltage

Touch voltage range: 50 V

Touch voltage setting: in discrete points depending on setup trip current value

Touch series resistance: 0.02 Ω, 0.05 Ω, 0.10 Ω, 0.35 Ω, 0.50 Ω, 0.96 Ω, 1.7 Ω, 4.7 Ω, 9 Ω, 17 Ω, 47 Ω, 90 Ω, 170 Ω, 470 Ω, 900 Ω, 1700 Ω

Line voltage range: 250 V

Line voltage uncertainty: ± (5 % reading + 3 V)

User selectable nominal line voltage: 100 V/115 V/120 V/220 V/230 V/240 V/250 V or real

Post-trip delayed power restore mode: user selectable

RCD (Residual current device (for PATs)
Trip current range 0.5 X I to 5 X I Mode: 5 to 150 mA in 1 mA steps
Trip current measurement resolution 1 μA
Trip current measurement uncertainty Trip current: ± 1 % of nominal current (I) setting
Trip time range 10 to 5000 ms
Trip time uncertainty (0.02 % setting + 0.25 ms)
Line voltage Reconnection delay: 2.5 s
AC/DC voltage calibrator (5322A with VLC Option)
Range 0.03 V to 600 V, ac or dc (.5 - 1%)
Internal ranges

AC mode: 0.3 V to 600 V

DC mode: 0.3 V to 600 V

Maximum withstand voltage

HV terminal to COM terminal: 5000 V rms

V terminal to COM terminal:  1100 V rms

COM terminal to Protective Earth: 2200 V pk

AC/DC voltage range

V (1100 V) Input:  0 V dc to ±1100 V dc 10 mV to 1100 V ac rms

HV (5000 V) Input: 0 Vdc to ±5000 Vdc 5 V to 5000 V ac rms

AC/DC current
Range 0 A to 20 A continuous, 20 A to 30 A for up to 5 minutes, ac rms or dc
AC power
Range 0 kVA ac to 33 kVA ac
Type Apparent, active, reactive
Phase indication Phase angle (φ), Power Factor (PF)
Phase uncertainty (dφ) ± 0.1 °
DC power
Range 0 to 33 kVA dc
Hipot ac voltage distortion measurement
Frequency range 45 Hz to 65 Hz
Number of harmonics 25
Hipot dc voltage ripple coefficient measurement
Voltage range 100 V dc to 5000 V dc
Ripple coefficient range 10 %
Flash test voltage measurement (using flash LC or flash V mode)
Class I Voltage range 2000 V ac rms
Uncertainty ± (0.3 % of reading + 6 V)
Class II Voltage range 3000 V ac rms
Uncertainty ± (1 % of reading value + 6 V)
Flash leakage current measurement (using flash LC mode)
Range 0 mA ac rms or dc to 300 mA ac rms or dc
Resolution 4.5 digits


Model Name Description
5322A Multifunction Electrical Tester Calibrator with 1.5 kV Resistance
5322A/5 Multifunction Electrical Tester Calibrator with 5 kV High Voltage Resistance Outputs
5322A/VLC Calibrator with 1.5 kV Resistance, 600 V Source, Voltage Loop Compensation
5322A/40 Calibrator with 1.5 kV Resistance and 40 kV Probe
5322A/5/VLC Calibrator with 5 kV Resistance, 600 V Source, Voltage Loop Compensation
5322A/VLC/40 Calibrator with 1.5 kV Resistance, 600 V Source, Voltage loop Compensation and 40 kV Probe
5322A/5/40 Calibrator with 5 kV Resistance, and 40 kV Probe
5322A/5/VLC/40 Calibrator with 5 kV Resistance, 600 V Source, Voltage Loop Compensation and 40 kV Probe

Accessories common to all models:

Accessory Description
5322A-LOAD High Voltage Resistor Load for 5322A
Y5320A Rack Mount Kit for 5322A – Sliding
5322A/CASE Transit Case for 5322A (without 5322A-LOAD)

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