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S1-568 5kV Diagnostic Insulation Tester

Megger S1-568 5kV Diagnostic Insulation Tester. Measurements in noisy environments. Rapid charge of capacitive loads e.g HV power cables (c/w 3m lead set with medium sized clips for clamping on larger diameter test pieces when space is limited).

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5154.00 incl. VAT)
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  • Competitive quote
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Megger S1-568 5kV High Performance Diagnostic Insulation Tester

Megger S1-586 is a 5 kV utility insulation resistance tester with exceptionally high noise rejection, the fast charging S1-568 offers the full gamut of automatic insulation tests with 8 mA of noise rejection, IR, timed IR, polarisation index (PI), dielectric absorption ratio (DAR), programmable Step Voltage (SS), Dielectric Discharge (DD) and ramp. The S1-568 allows the operator to control the test remotely from a computer using the 10 kV isolated USB port, to store the date and time stamped results on board or to download them in real time using Bluetooth. This is the perfect tester for the itinerant contractor as it will give results in any electrical environment.

  • Proven ability to make accurate stable measurements in noisy environments such as 765 kV substations
  • Rapid charge of capacitive loads such as HV power cables
  • Additional safety in high energy locations with remote operation
  • Always ready to test with fast charge Li-ion battery or a.c. source operation
  • Designed to survive harsh environments

These top end insulation testers are targeted at power utilities and service companies working in generation, transmission and distribution markets. They feature class leading charge current, noise rejection and software filters.

The insulation resistance test is a quantitative test which indicates the effectiveness of a product’s electrical insulation; applications include:

  • Cables
  • Transformers
  • Motors/Generators
  • Circuit breakers
  • Bushings

Common insulation tests are the ‘spot test‘, a 1 minute IR test and a 10 minute Polarisation Index (PI) test, where PI is the ratio R10min / R1min and is temperature independent.

The Megger S1-568 boasts five preset voltage ranges are provided in insulation test mode, plus a user settable lock voltage range. Pre-configured diagnostic tests include Polarisation Index (PI), Dielectric Absorption Ratio (DAR), Dielectric Discharge (DD), Stepped Voltage (SV) and Ramp test.


▶ Video: High Performance Guard Terminals on the Megger S1-586

Video thumbnail for Megger High Performance Guard Terminals

Megger S1-568 Key Features:

  • Resistance measurement: 15 TΩ - 5 kV
  • High current: 6 mA short circuit current
  • High noise immunity: 8 mA of noise rejection
  • Four software filters: 10 s, 30 s, 100 s, 200 s
  • Li-ion battery: charges in 2 hours. Gives up to 6hrs continuous testing a 100 MΩ load (S1-568)
  • Safety rating: CAT IV 600 V up to 3000 m
  • Remote operation via USB cable
  • Download of memory via isolated USB cable Bluetooth
  • IR, timed IR, DAR, PI, DD, SV and ramp diagnostic tests
  • Large LCD display with back-light
  • Dedicated voltmeter function (30 V to 660 V) AC or DC
  • Advanced memory, on screen recall and real time clock for date/ time stamped results
  • PowerDB Lite asset management software
  • Option to record temperature and/or relative humidity with saved results (measured independently)
  • New Transport Case option (-TC)


What comes with the Megger S1-568?

  • Megger S1-568 UK Diagnostic Insulation Tester
  • 3m, 5kV-insulated lead set with medium clips
  • Megger PowerDB Lite Asset management software


Comparison Chart for: Megger S1-568 5kV Diagnostic Insulation Tester

Test voltage
15.0 kV
10.0 kV
5.0 kV
2.5 kV
1.0 kV
500 V
250 V
100 V to 1 kV in 10 V steps
1 kV to max test voltage in 25 V steps
40 V to 1 kV in 10 V steps
Max reading10 TΩ10 TΩ15 TΩ20 TΩ35 TΩ30 TΩ35 TΩ
Min reading10 kΩ10 kΩ10 kΩ10 kΩ10 kΩ10 kΩ10 kΩ
Leakage current
Test types
Timed insulation resistance
Polarisation index
Dielectric absorption index
Step voltage
Dielectric discharge
Other features
Analogue and digital display
Short circuit current3 mA3 mA6 mA3 mA6 mA3 mA6 mA
Timer control and display
Max noise rejection3 mA3 mA8 mA3 mA8 mA6 mA8 mA
Remote control via USB port
USB output
Bluetooth output
PowerDB Lite


Accessory Code Description Price (Ex VAT)
1002-534 Leadset 3kV large clips (3 x 3 m) FOR 515/525/1025 £123.00 ADD
1002-641 5m leadset x 3 medium insulated clips £138.00 ADD
1002-642 8m Test Lead Set x 3; medium sized 6kV insulated clips £185.00 ADD
1002-643 10m Leadset medium size insulated clips £205.00 ADD
1002-644 15m Leadset medium size insulated clips £280.00 ADD
1002-645 5m leadset x 3 large insulated clips £158.00 ADD
1002-646 8m leadset x 3 large insulated clips £205.00 ADD
1002-648 15m Leadset large size insulated clips £300.00 ADD
1002-913 Bare clip Fused 1kV HV Leadset £110.00 ADD
6111-217 Pack of 20 test record cards (5 kV) £16.00 ADD
6220-822 Leadset 1 kV Red/Black for 5&10KV ( 2 x 3m) £99.00 ADD
6311-077 CB101 5 kV Calibration Box £385.00 ADD
6311-080 15m (50ft) Leadset 5kV Screened Compact Clips £350.00 ADD
1008-022 Lead Set 3kV 3x3m Medium Clips £118.00 ADD
1002-647 10m Lead Set £215.00 ADD