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5322A Electrical Safety Tester Calibrator

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. 

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


Model Name
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
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
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)