IEEE C37.73 : 1998

1 Scope
2 References
3 Definitions
4 Service conditions
    4.1 Usual service conditions
    4.2 Unusual service conditions
5 Ratings and test requirements
    5.1 General
    5.2 Rating information
    5.3 Preferred voltage ratings and related test requirements
    5.4 Continuous current ratings and related test requirements
6 Design tests
    6.1 General
    6.2 Tests on connectors and bushings used on PMFSG
    6.3 Testing of PMFSG
    6.4 Testing of switches installed in switched ways and
          fused-switched ways
    6.5 Testing of switching devices in fused-loadbreak ways
    6.6 Testing of fusing devices used in fused ways, fused-switched
          ways, or fused-loadbreak ways
7 Production tests
    7.1 Circuit resistance test
    7.2 Power-frequency withstand test
    7.3 Leak test
    7.4 Operating tests
8 In-service dc withstand test
9 Construction requirements
    9.1 Grounding provisions
    9.2 Manual operating provisions
    9.3 Switch position indicators
    9.4 Insulating medium quantity indicators
    9.5 Drain and replacement provisions
    9.6 Sampling and addition provisions
    9.7 Enclosure construction
    9.8 Nameplates
10 Shipping requirements

Applies to assemblies of single-phase and three-phase, dead-front and live-front, pad-mounted, load-interrupter switches with expulsion, current-limiting, and other types of fuses in enclosures up to 38 kV rated maximum voltage.