Megger S1-568/2 Expert 5kV HV Insulation Resistance Tester

SKU: MEGGS15682
  • Offers selectable test voltages from 250V to 5kV
  • Maintains a ±5% accuracy up to 1TΩ at 5kV
  • Has a patented PI Predictor (Plp) function
More Info
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Megger S1-5682 Expert 5kV HV Insulation Resistance Tester

The Megger S1-5682 Expert 5kV HV Insulation Resistance Tester delivers accurate insulation resistance measurements up to 5kV and is designed for professionals who work in high-voltage environments such as power utilities, industrial facilities, and electrical service organisations.

The S1-5682 supports a full suite of insulation diagnostic tests, including Polarisation Index (PI), Dielectric Discharge (DD), Step Voltage (SV), Ramp Voltage, and advanced methods like PDC (Polarisation Dependent Current). It features Megger’s innovative RE>Act mode, which allows it to detect and compensate for reabsorption currents, improving measurement accuracy in challenging conditions. The patented PI Predictor (Plp) function accelerates testing by estimating PI results early, thus allowing for fast decision-making without compromising on reliability. With a resistance measurement capability up to 15TΩ and selectable test voltages from 250V to 5kV, the S1-5682 provides exceptional flexibility across a broad spectrum of applications such as cables, motors, generators, transformers, switchgears and more.

One of the standout features of the S1-5682 is its superior noise rejection that can operate effectively in environments with electrical interference up to 8 mA. Thanks to adaptive filtering and high-voltage noise suppression, the S1-5682 is suitable to use in substations and industrial sites where conventional testers may struggle. It also supports remote operation via USB, allowing technicians to conduct tests from a safe distance, which is especially useful in hazardous or high-voltage areas. Users can streamline asset management and reporting thanks to robust data logging, which includes time- and date-stamped results that can be transferred via USB or Bluetooth® to Megger’s CertSuite Asset or PowerDB software.

The S1-5682 features a dual-case design with a shock-resistant outer shell and a fire-retardant inner casing. It is rated IP65 when the lid is closed, offering protection against dust and moisture ingress. Safety is important with all Megger testing, with the S1-5682 boasting a CAT IV 600 V rating and reinforced insulation along with a 5-tier voltage warning system to ensure the user is protected during operation. Plus, it performs reliably in extreme temperatures ranging from -20°C to +50°C and at altitudes up to 3000 metres.

In terms of measurement performance, the S1-5682 delivers resistance accuracy of ±5% up to 1 TΩ and ±20% up to 10 TΩ, while supporting current measurements from 0.01 mA to 6 mA and capacitance measurements from 10nF to 25µF with ±10% accuracy. The S1-5682 operates on either rechargeable batteries or AC mains and comes complete with one medium insulated test leads (3 metres), a screened USB cable with filters, a remote control indicator beacon, and a free licence for CertSuite Asset Lite software.

Comparing the Megger Essential, Advanced & Expert Ranges

Feature Essential Range
MIT1015
MIT515/2
Advanced Range
MIT525/2
MIT1025/2
MIT1525/2
Expert Range
S1-568/2
S1-1068/2
S1-1568/2
High Guard Termial Performance
IR
IR(t)
PI Polirasation Index
PI Predictor
DAR Dielectric Absorption Ratio
DD Dielectric Discharge  
Ramp Test  
RE>Act mode
PDC test  
Max. voltage available 5kV or 10kV 5kV, 10kV or 15kV 5kV, 10kV or 15kV
Default maximum current 3mA 3mA 6mA
User selectable max. current values n/a 1mA, 3mA, 6mA (6mA only from main supply) 1mA, 2mA, 3mA, 4mA, 5mA, 6mA (6mA from internal battery and mains supply
Max. noise current with measurement withing accuracy spec.  3mA (LV and MV <45kV)  6mA (HV <230kV)  8mA (EHV <1000kV)
Adaptive filter     
Negative current handling 
Averaging filter     
CAT IV 1000V  
CAT IV 600V
Hazardous peak voltage detection during IR measurement  
On-board - time stamped  
Temperature value stored  
Humidity value stored    
Test results transfer via wired USB  
Test result transfer via wireless Bluetooth LE  
Test result live streaming via wired USB  
Test result live streaming via wireless Bluetooth LE  
Remote control via wired USB    
New custom colour display
Carry all holdall
Deeper lid pouch
CertSuite Asset Lite compatible  
CerSuite Assert compatible  
Power DB Lite supplied free  
Power DB Advance or Pro support  

part number: 1016-106

Key Features

  • Test voltage range from 250V to 5,000V
  • Resistance range from10kΩ to 15TΩ
  • Capacitance range from10nF to 25µF
  • ±5% accuracy up to 1TΩ at 5kV
  • RE>Act mode and PI Predictor
  • PDC, SV, DD, DAR, Ramp test capabilities
  • Remote control via USB
  • CAT IV 600V safety rating up to 3000m altitude
  • IP65 rated (lid closed)
  • Dual-case design
  • CertSuite Asset Lite compatible

What's In The Box?

  • 1 × 3 m lead set with medium insulated clips (rated for 5 kV use)
  • Screened USB cable with filters
  • Remote control indicator beacon
  • Power lead
  • Quick start label
  • CertSuite Asset Lite software
Specification

For detailed specifications on the Megger S1-5682 Expert 5kV HV Insulation Resistance Tester, please click on the brochure below.

Label Type Size Download
pdf Megger Expert Range Preview pdf 3 MB Download

Please see our terms and conditions for full details of TM Care & Protect.

Everything you’re likely to require for the next 3 or 5 years:

✅ Annual calibrations included
No further calibration costs for either 3 or 5 years

✅ Free collection and return for annual calibration
No hidden postage costs when it’s time for calibration

✅ ‘Zero-Downtime’ for the life of your care plan
Free loan equipment should your purchase ever need sending away for repair

✅ Anti-theft protection 
Each care plan includes a SmartTrace Forensic Marking kit that acts as a deterrent for your test equipment and other tools

✅ Instrument cleaning kit
Cleaning kit included with each TM Care & Protect plan

Our hope is that TM Care & Protect will bolster our commitment to support you throughout your journey with us, providing you peace of mind from the hassles of annual servicing, potential tool theft and loss of earnings.

Ensures complete reliability, minimised downtime and peace of mind. TM Care & Protect packages include:

✅ Annual Calibration
No further calibration costs for up to 5 years.

✅ Zero Unplanned Downtime
In case of any unforeseen repairs, we provide FREE loan instruments so you can continue working.

✅ Theft Deterrent Kit
Each care plan includes a SmartTrace forensic marking kit: The UK's most powerful theft deterrent. Use on your test equipment, van and tools.

✅ No Shipping Cost
Includes collection and return deliveries when it's time for calibration.

✅ Instrument Cleaning Kit
Avoid preventable issues by keeping your test equipment clean.

Our hope is that TM Care & Protect will bolster our commitment to support you throughout your journey with us, providing you peace of mind from the hassles of annual servicing, potential tool theft and loss of earnings.

Please see our terms and conditions for full details of TM Care & Protect.