BS EN IEC 60051-3:2021

BS EN IEC 60051-3 specifies direct acting indicating wattmeters and varmeters having an analogue display.

BS EN IEC 60051-3 applies to:

• non-interchangeable accessories used with wattmeters and varmeters
• a combination of the instruments and the accessories provided that the adjustments have been made for the combination
• direct acting indicating electrical measuring instruments whose scale marks do not correspond directly to their electrical input quantity, provided that the relationship between them is known
• instruments and accessories having electronic devices in their measuring and/or auxiliary circuits.

NOTE: BS EN IEC 60051-3 does not apply to:

• special purpose instruments which are covered by their own IEC standards
• special-purpose devices which are covered by their own IEC standards when they are used as accessories

Who is BS EN IEC 60051-3 for?

BS EN IEC 60051-3 on special requirements for wattmeters and varmeters is beneficial for:

• Electricians
• Electrical engineers
• Mechanics
• Mechanical engineers

Why should you use BS EN IEC 60051-3?

The Wattmeter / Varmeter module is fitted with one wattmeter and one varmeter and is designed to indicate the direct measurement of active and reactive power in balanced three-phase circuits.

BS EN IEC 60051-3 assists the user with the electrical requirements and constructional requirements of the product.