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EN 62310-3:2008
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Static transfer systems (STS) - Part 3: Method for specifying performance and test requirements
05-09-2008
FOREWORD
1 Scope
2 Normative references
3 Terms and definitions
3.1 General definitions
3.2 Specified values
3.3 Input values
3.4 Output values
4 Performance requirements
4.1 Declared electrical characteristics
4.1.1 Performance classification
4.1.2 Main electrical characteristics
4.2 Normal service conditions
4.3 Transfer characteristics
4.3.1 Load voltage
4.3.2 Cross-current
4.4 Neutral management
4.4.1 Common neutral
4.4.2 Separately derived neutrals
4.4.3 Neutral current
4.4.4 Protective earth current
4.5 Performance requirements to be identified
by the purchaser
5 STS tests
5.1 General
5.1.1 Type tests
5.1.2 Routine tests
5.1.3 Site tests
5.1.4 Testing schedule
5.2 Electrical tests
5.2.1 Insulation and dielectric
5.2.2 Light load and functional test
5.2.3 No load
5.2.4 Rated load
5.2.5 Transfer
5.2.6 Source tolerance
5.2.7 Overload and fault current
5.2.8 Operating losses
5.2.9 Backfeed
5.2.10 Abnormal operating conditions
5.3 Transportation and environment
5.3.1 General
5.3.2 Impact and shock
5.3.3 Free fall
5.3.4 Storage
5.3.5 Temperature and humidity
5.3.6 Acoustic noise
Annex A (normative) - Reference load
Annex B (normative) - STS voltage sensing tolerance
Annex C (informative) - Neutral management in static
transfer systems
Annex D (normative) - Neutral switching in static transfer
systems - Additional requirements
Annex E (informative) - Purchaser specification guidelines
Annex F (informative) - Output short circuit test procedure
Annex G (normative) - Backfeed protection test
Annex H (normative) - Minimum and maximum cross-sections
of copper conductors suitable for
connection
Annex ZA (normative) - Normative references to international
publications with their corresponding
European publications
Bibliography
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