IS 1941 : Part 1 : 1976 FUNCTIONAL REQUIREMENTS FOR ELECTRIC MOTOR SIRENS PART 1 AC, 3-PHASE, 50 Hz, 415 VOLTS TYPE
Reaffirmed 2018
1. SCOPE
1.1 This standard (Part 1) covers the details regarding construction and performance requirements of electric motor sirens up to 3.75 kW ac, 3-phase, 30 Hz, 415 volts type.