• approved distributor

    Buy or Hire Test Equipment
    Repair | Calibrate | Training

  • product advice and demos

    Product advice & demos
    Aftersales support

  • competetive prices

    Competitive quotes
    Bespoke deals

  • approved distributor

    Approved distributor
    Approved service centre


Be the first to review this product

OTS60PB 60kV Auto Portable Oil Test Set Basic Build c/w Accessories

Megger OTS60PB 60 kV Portable Oil Test Set with 400ml Vessel. Features a transparent, shielded lid - See what‘s happening in the test chamber. Small & weighing in at less than 17kg. Battery option available for portable use on-site or in the lab.

Part Number:

read more


Need Help ? Contact Us Request Demo Browse Accessories
Acutest's Price Promise
  • Competitive quote
  • Expert technical advice/demos
  • Trusted aftercare support


Manufacturer's RRP

10890.00 incl. VAT)
Add To Cart
  • Competitive quote
  • Expert technical advice/demos
  • Trusted aftercare support






Megger OTS60PB Oil Test System - Portable Liquid Dielectric Breakdown Tester

A fully automatic test system, powered by either battery or mains and facilitates accurate breakdown voltage tests on mineral, ester and silicon insulating oils. Used on-site as well as in the laboratory, the precision test vessel sets the accuracy standard for the liquid insulation test industry.  For ease of use the instrument comes with a pre-programmed ‘library’ of international breakdown test standards, and the ability to create custom tests.

The OTS60PB weighs less than 17kg and comes complete with optional carry bag, plus an optional impact resistant transport case. The transport case provides space for the unit, vessel and electrode set.

The instrument is housed in a metal case with moulded end caps that accommodate convenient carry handles. The test chamber is designed with an easy-clean surface and provides a drain for spilt oil through an internal pipe routed to the rear of the instrument (a beaker or similar can be used for spillage collection). The test area is covered by a plastic lid with an electrically protective inner conductive layer which, with the metal case, provides a safe equipotential enclosure for high voltage testing.

The lid allows in plenty of ambient light and users are able to view the test and witness stirring and the breakdown. The chamber lid is dual redundant safety protected with micro-switches to prevent accidental electrification.


Megger OTS60PB Application:

Monitoring and maintenance of oil quality is essential in ensuring the reliable operation of oil filled electrical equipment. Codes of practice have been established in many countries that include several different types of test on insulating oils. One of the fundamental tests of oil quality is the breakdown voltage test, which is a measure of the oil’s ability to withstand electric stress. A low breakdown voltage can indicate the presence of contaminants such as water or conducting particles.  Care should be taken to ensure the process of sampling oil and subsequent testing does not in any way contaminate it with foreign objects.  Cleaning vessels between oil tests should be a rinse with the next sample, never clean with fibrous materials. To ensure an accurate reading set gap carefully and lock adjusting wheels.


▶ Video: Megger OTS Oil Testers Overview

Thumbnail for Megger OTS Oil Tester video

Megger OTS60PB Key Features:

  • Full Range to suit all user needs
  • Easy adjust - locking electrode gap
  • Fast precision breakdown detection
  • Ultra-fast HV switch off time
  • Suitable for mineral, ester and silicone oils
  • Flat electrode gap gauges that will not damage electrodes
  • Oil temperature is measured continuously so it can be determined whether the oil test sample is within the range allowed by the test standards before the test is commenced
  • QVGA colour display with back-light (easy to read in sunlight or dark conditions)
  • Large, easy clean test chamber with oil drain
  • High visibility test chamber
  • Safe operation with dual redundant micro-switches
  • Intuitive user interface
  • Fully automatic operation with pre-loaded international test standards
  • User configurable test sequences to cover transition period of new / updated test standards (standards maintained via USB updates from Megger)
  • All instruments supplied with one 400 ml test vessel in the box as standard, unless the super user kit is specified (see below)
  • Built onto rigid box section chassis to prevent flexing on impact that otherwise would damage transformer
  • Unique built in chamber drain pipe for easy removal of oil accidentally spilt in test chamber, this can easily be connected to a lab waste system
  • Test standards favourites list speeds up selection by only displaying the standards regularly used by the use
  • NEW - IEC60156-2018
  • NEW - IEC60156-2018 V for Viscous Oils
  • NEW - IEC60156-2018 Annex A
  • NEW - IEC60156-2018 Annex A (V) for Viscous Oils
  • NEW - Withstand tests


What comes with the Megger OTS60PB?

  • Megger OTS60PB Laboratory Portable Oil Test Set
  • Vessel 400 ml assembly (stirrer lid fitted)
  • Full electrode set - IEC and ASTM
  • IEC and ASTM impeller
  • Printer
  • NiMH battery
  • Electrode gauge set
  • Calibration certificate
  • Power DB guide
  • Quick Start Guide
  • OTS Vessel Preparation Guide


Comparison Chart for: Megger OTS60PB 60kV Auto Portable Oil Test Set Basic Build c/w Accessories

Configured to order options
Printer (built in) or not
Internal battery fitted or not
Mains / Line supply lead (plug)
Electrode set supplied (IEC ASTM or Universal)
Soft Padded carry case
OTS Range Differentiating Features
Max test voltage
60 kV
80 kV
100 kV
Power supply
Lead acid battery option
NiHM battery option
Vehicle 12 V skt lead option
Mains only operation
Data management
Internal test result memory
Download results to USB stick
Barcode scanning capability
Keypad for easy asset ID and memo entry
Tough display and chamber lid
Low cost shatter proof test vessel
Large corner protecting rubber feet
Rugged non-flex construction
Transport case**
Protective carry case**
Light weight (<23 kg) one man carry
Operating costs
Low cost test vessel (Vessel of each oil **)
Annual full calibration
Test standards
Fast favourite list selection
Fully automatic test sequence
Test standards update via USB device ***
Custom tests
Easy pour / clean vessel design
Large test chamber (easy access)
Test chamber spilt oil drain
Continuous oil temperature measurement
Lockable thumb wheel adjustable electrode gap
Voltage output verification unit available
*Optional item **IEC 60156 recommends a separate test vessel is used for each type of fluid to be tested ***Important future proof feature


Accessory Code Description Price (Ex VAT)
1001-102 Accessory Lid Mounted Impeller Supplied (for use with 400ml vessel only) £245.00 ADD
1001-105 VCM100D Voltage Check Meter £1,250.00 ADD
1001-473 Vessel 400ml (no electrodes) £295.00 ADD
1001-474 Vessel 150ml (no electrodes) £315.00 ADD
1001-475 PB Transport Case with Wheels £670.00 ADD
1001-477 Accessory IEC Electrode Set - Includes Mushroom and Sphere Electrodes Stirrer Bar Gap Gauge Set Magnetic Bean Retreiver all in Case £250.00 ADD
1001-478 ASTM Electrode Set - Includes Cylinder Electrodes Both std and None std Mushroom Electrodes Stirrer Bar Gap Gauge Set and Magnetic Bean Retreiver all in Case £280.00 ADD
1001-479 ASTM and IEC Electrode Set - Includes Cylinder Electrodes Both std and None std Mushroom and Sphere Electrodes Stirrer Bar Gap Gauge Set and Magnetic Bean Retreiver all in Case £325.00 ADD
1001-801 VCM80D Voltage Check Meter £1,220.00 ADD
1002-144 Electrode Spacer Set Spare (new OTS) £116.00 ADD
25995-002 Printer Ribbon Cassette £20.00 ADD
27890-009 Stirrer Bar Magnetic MS/F1 £15.00 ADD
6220-482 Pair of Mushroom Electrodes £91.00 ADD
6220-483 Pair of Cylindrical Electrodes £91.00 ADD
6220-484 Pair of Spherical Electrodes £91.00 ADD