IEEE C37.74 2003
$48.75
IEEE Standard Requirements for Subsurface, Vault, and Padmounted Load-Interrupter Switchgear and Fused Load-Interrupter Switchgear for Alternating Current Systems up to 38 kV
| Published By | Publication Date | Number of Pages |
| IEEE | 2003 | 51 |
Revision Standard – Inactive – Superseded. Required definitions, ratings, procedures for performing design tests and production tests, and construction requirements for subsurface, vault, and pad-mounted load-interrupter switchgear and fused load-interrupter switchgear for ac systems up to 38 kV are specified
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | Cover |
| 2 | IEEE Standard Requirements for Subsurface, Vault, and Pad-Mounted Load-Interrupter Switchgear and Fused Load-Interrupter Swit |
| 5 | Introduction |
| 6 | Participants |
| 8 | Contents |
| 10 | 1. Scope 2. References |
| 12 | 3. Definitions |
| 13 | 4. Service conditions 4.1 Usual service conditions 4.2 Unusual service conditions |
| 14 | 4.2.1 Abnormal ambient temperatures 4.2.2 Altitudes above 1000 m 5. Ratings, required related capabilities, and test requirements 5.1 General 5.2 Rating information 5.2.1 Overall ratings |
| 16 | 5.2.2 Individual way ratings |
| 17 | 5.3 Continuous current ratings and related test requirements 5.3.1 Conditions of continuous current rating |
| 18 | 5.3.2 Limits of observable temperature rise 5.3.3 Application of fuses |
| 21 | 6. Design tests (type tests) 6.1 General |
| 22 | 6.1.1 Condition of DSG to be tested 6.1.2 Mounting of the DSG 6.1.3 Maintenance 6.1.4 Power-frequency 6.2 Tests on connectors and bushings used on DSG |
| 23 | 6.3 Testing of DSG as an entity 6.3.1 General 6.3.2 Test requirements 6.3.3 Condition of DSG following short-circuit tests |
| 24 | 6.4 Testing of switches installed in switched ways and fused-switch ways 6.4.1 General 6.4.2 Test sequence 6.4.3 Condition of switching device in switched and fused-switch ways after test sequence |
| 25 | 6.5 Testing of switching devices in fused-loadbreak ways 6.5.1 General |
| 26 | 6.5.2 Test sequence 6.5.3 Condition of switching device in fused-loadbreak ways after test sequence 6.6 Testing of fusing devices used in fused ways, fused-switch ways, or fused- loadbreak ways 6.6.1 General 6.6.2 Test sequence |
| 27 | 6.6.3 Interrupting performance of fusing devices in the DSG 6.7 Test methods 6.7.1 General 6.7.2 Dielectric tests |
| 30 | 6.7.3 Continuous current test |
| 31 | 6.7.4 Short-circuit withstand current tests |
| 34 | 6.7.5 Switching tests |
| 37 | 6.7.6 Thermal runaway test 6.7.7 Partial discharge (corona) tests |
| 38 | 6.7.8 DC withstand voltage test |
| 39 | 6.7.9 Sealed test pressure tests 6.7.10 Mechanical operations tests |
| 40 | 7. Production tests (routine tests) 7.1 Circuit resistance test 7.2 Power-frequency withstand voltage test 7.3 Partial discharge test 7.4 Leak test 7.5 Operating tests |
| 41 | 8. Field tests on units in service, including dc withstand tests on cables |
| 42 | 9. Construction requirements 9.1 Grounding provision 9.2 Manual operating provisions 9.3 Position indicators 9.4 Insulating medium quantity indicators 9.5 Drain and replacement provision |
| 43 | 9.6 Sampling and adding provisions 9.7 Parking stands 9.8 Bushings 9.9 Enclosure construction—submersible and pad-mounted equipment 9.10 Enclosure construction—pad-mounted equipment 9.11 Nameplate |
| 44 | 9.12 User identification plate |
| 45 | 10. Shipping requirements |
| 46 | Annex A—(informative) X/R ratios A.1 Time constant (tcc) and X/R ratio A.2 Asymmetrical fault current |
| 48 | Annex B—(informative) Altitude correction factors B.1 Introduction B.2 Altitude correction factors |
| 49 | B.3 Examples for switchgear with 110 kV/BIL already rated for 1000 m |
| 50 | B.4 Examples for switchgear ratings based on 110 kV BIL withstand tests referred to sea level NTP… |
| 51 | Annex C—(informative) Bibliography |
Related products
-
IEEE C37.74-2003
IEEE Standard Requirements for Subsurface, Vault, and Padmounted Load-Interrupter Switchgear and Fused Load-Interrupter Switchgear for…
