International standard 521 : class 0.5, 1 and 2 alternating - current watthour meters
- 2d ed.
- Geneva IEC 1982
- 77 p.
STD3262
ELECTRICAL ENGINEERING-STANDARDS
STANDARDS
ELECTRIC MEASURING INSTRUMENTS
621.317.7. / I6
STD3262
ELECTRICAL ENGINEERING-STANDARDS
STANDARDS
ELECTRIC MEASURING INSTRUMENTS
621.317.7. / I6