Reference
The standards that tenders and inspectors name most often, summarised by what they cover, with the instruments, guides and calculators that go with each.
Insulation resistance testers, hand operated (magneto generator type)
Construction and accuracy of hand-operated magneto generator insulation testers, the classic hand-cranked megger.
Instruments: Hand-driven insulation testers
Status: The 1987 edition is the one manufacturers still cite. BIS lists it as reaffirmed in 2015; check the BIS catalogue for its current status. Electronic insulation testers fall under a separate standard (IS 10656).
Recommended practice for testing insulation resistance of electric machinery
How to test and interpret insulation resistance and polarization index on windings of rotating machines rated 750 W or more.
Instruments: Insulation testers with 500, 1000, 2500 and 5000 V ranges
Status: The 2013 edition is listed by IEEE as inactive-reserved since 2024, though it is still widely cited. Check the IEEE site for the current status.
Insulating liquids: determination of the breakdown voltage at power frequency, test method
The breakdown voltage test for transformer oil: test cell, electrode gap and procedure.
Instruments: Oil BDV test sets
Status: The current edition (IS 6792:2023) is identical to IEC 60156:2018. Older editions were titled as a method for the electric strength of insulating oils.
Insulating liquids: determination of the breakdown voltage at power frequency, test method
The IEC method for the breakdown voltage of insulating liquids, widely used outside India and in export specifications.
Instruments: Oil BDV test sets
Code of practice for earthing
Design, installation and maintenance of earthing systems. It tells you what to achieve; an earth tester proves it.
Instruments: Earth testers
Portable earth resistance meters
Accuracy and construction expected of portable earth resistance meters.
Instruments: Analog and digital earth testers
Status: The 1989 edition is still cited by manufacturers, but BIS records show it as withdrawn and point to IS/IEC 61557-5 (resistance to earth) for current practice. Check the BIS catalogue before quoting it in a tender.
Guide for measuring earth resistivity, ground impedance and earth surface potentials of a grounding system
Field methods for soil resistivity (including the Wenner four-pin method) and ground system measurements.
Instruments: Earth testers with four-terminal capability
Code of practice for electrical wiring installations
Wiring practice for buildings, including the tests carried out on a finished installation.
Instruments: Insulation testers, earth testers, multimeters
Low-voltage electrical installations, Part 6: verification
Initial and periodic verification of low-voltage installations, including insulation resistance tests.
Instruments: Insulation testers, continuity and earth testers
Requirements for electrical installations (IET Wiring Regulations)
The UK wiring regulations, often named in specifications from UK-linked projects.
Instruments: Installation testers
Safety requirements for measurement, control and laboratory equipment
General safety requirements for test and measurement equipment, including the CAT I to CAT IV measurement categories.
Instruments: Multimeters, clamp meters and other hand-held instruments
Electrical safety in low voltage distribution systems up to 1000 V AC and 1500 V DC: equipment for testing, measuring or monitoring of protective measures (series)
Performance requirements for installation testers, split into parts for insulation, earth resistance, loop impedance and more.
Instruments: Installation testers, insulation and earth testers
Degrees of protection provided by enclosures (IP code)
The two-digit IP code for dust and water ingress.
Instruments: Any instrument used outdoors or on a plant floor
Measuring relays and protection equipment (series)
Requirements and tests for protection relays, including the inverse-time characteristics used by IDMT relays.
Instruments: Relay test sets
Direct acting indicating analogue electrical measuring instruments and their accessories (multi-part)
Accuracy classes and tests for analogue panel and portable meters, split into parts for ammeters and voltmeters, wattmeters, ohmmeters and more.
Instruments: Analog meters and indicators
Status: The 2021 parts are aligned with the IEC 60051 series.
Competence of testing and calibration laboratories
The standard that laboratories (including NABL-accredited ones) are assessed against. It governs a lab, not an instrument.
Instruments: Calibration certificates and traceability
How to read this page. Titles and status were checked against BIS, IEEE, IEC and national catalogue listings, but not against the standards' full text. Each entry summarises scope only. We do not reproduce limits or clause text, because standards are revised and split into parts. Always quote the full designation and edition exactly as your specification gives it. Listing a standard here does not mean a particular instrument is certified to it; for the standards our own instruments conform to, see the Indian standards guide or ask us for the datasheet.
Send us the standard, range and quantity. We will confirm which models match.
