Megger S1-568 5kV Insulation Resistance Tester

SKU: MEGGS1568

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Key Features
  • 5kV output with 15 TΩ range
  • 8mA noise rejection plus 4 filters
  • Ideal for use in power utility/power transmission industries

Megger S1-568 5kV Insulation Resistance Tester

The Megger S1-Series of high voltage insulation resistance testers comprises of three models offering 5, 10 and 15kV outputs; the S1-568, S1-1068 and the S1-1568 respectively. All of these instruments are targeted for operation in power generation, distribution and transmission industries.

The Megger S1-568 is the first instrument within the range boasting a DC voltage output between 250V and 5kV, producing a resistance measurement of up to 15 TΩ.

Exceptional electrical noise rejection (up to 8mA) in addition to a Bluetooth output and the ability to control the unit remotely via an isolated USB port, make the Megger S1-568 the ideal 5kV insulation resistance tester to be used within electrically hostile environments such as:

  • Atmospheres prone to electrical arcing
  • HV Switchgear environments
  • Areas prone to HV static discharge
  • Areas prone to lightning strike, i.e., lightning conductors

Moreover, the S1-568 offers the electrical engineer the ability to conduct timed testing,  polarisation index (PI), dielectric absorption ratio (DAR), step voltage, dielectric discharge and ramp testing.

Test results can be stored within an advanced internal memory complete with time/date stamping. Results can be recalled by at a later date for analysis on screen, as the internal memory allows for an impressive eleven hours of measurements taken at five second intervals.  Measured values can also be viewed in ‘live-time’ should the S1-568 be connected to a PC/Laptop via USB running the supplied Megger PowerDB Lite software package, or simply downloaded for analysis.

Straightforward operation is ensured with two rotary switches and a large, back-lit display which enables resistance, voltage, leakage current, capacitance, battery level and test time to be displayed simultaneously.

To comply with the harsh environments that the S1-568 is designed to be operated in, the unit features a dual case design which protects the unit from knocks and drops, but it is also fire retardant. When the instrument lid is closed, the seal also offers moisture and dust ingress protection rated to IP65.

Key Features                        

  • 5kV output with 15 TΩ range
  • 8mA noise rejection plus 4 filters
  • Ideal for use in power utility/power transmission industries

Why Test for insulation Resistance?

Electrical insulation can be affected over time by temperature, current flow, physical damage, chemical damage and environmental conditions to name a few. Both the reliability and the safety of an electrical installation can become an unwanted issue should insulation resistance values not be tested regularly and monitored.

Read more here – Guide to Insulation Resistance Testing

Comparison of the Megger S1-Series HV Insulation Resistance Testers

    S1-568 S1-1068 S1-1568
Test Voltage 15.0 kV     ✔
  10.0 kV   ✔ ✔
  5.0 kV ✔ ✔ ✔
  2.5 kV ✔ ✔ ✔
  1.0 kV ✔ ✔ ✔
  500V ✔ ✔  
  250 V ✔    
Measurement Max Reading 15 TΩ 35 TΩ 35 TΩ
  Min Reading 10 kΩ 10 kΩ 10 kΩ
  Voltage ✔ ✔ ✔
  Capacitance ✔ ✔ ✔
  Leakage Current ✔ ✔ ✔
Test Types Timed Insulation Resistance ✔ ✔ ✔
  Polarisation Index ✔ ✔ ✔
  Dielectric Absorption Index ✔ ✔ ✔
  Step Voltage ✔ ✔ ✔
  Dielectric Discharge ✔ ✔ ✔
  Ramp ✔ ✔ ✔
Other Features Analogue & Digital Display ✔ ✔ ✔
  Short Circuit Current 6 mA 6 mA 6 mA
  Rechargable ✔ ✔ ✔
  Timer Control & Display ✔ ✔ ✔
  Max Noise Rejection 8 mA 8 mA 8 mA
  Remotre Control Via USB Port ✔ ✔ ✔
  USB Output ✔ ✔ ✔
  Bluetooth Output ✔ ✔ ✔
Software PowerDB Lite ✔ ✔ ✔

What's In The Box?

  • Megger S1-568 5kV Insulation Resistance Tester
  • Manufacturers Calibration Certificate
  • Safety Warning Sheet
  • Product information CD, includes PowerDB Lite
  • Power lead
  • Screened USB cable with filters
  • Remote control indicator beacon
  • MEDIUM TEST CLIP 1002-531
Show Trustpilot Reviews
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Label Type Size Download
pdf Megger S1-Series Datasheet pdf 252.2 KB Download
pdf Application Note: 5 kV, 10 kV and 15 kV Insulation tester lead sets pdf 4.1 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.

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