CSA C813.1-14:2019 pdf download.Performance test method for uninterruptible power supplies
1.1 CSA C813.1-14 applies to uninterruptible power supplies (UPS). The primary function of the UPS covered by this Standard is to ensure continuity of an alternating power source. The uninterruptible power supplies can also serve to improve the quality of the power source by keeping it within specified characteristics.
1.2 This Standard is applicable to movable, stationary, fixed, and built-in UPS for distribution systems up to and including 600 V ac.
1.3 This Standard does not apply to the following products:
a) products that are internal to a computer or another end-use load (e.g., battery supplemented internal power supplies or battery backup for modems, security systems, etc.);
b) utility UPSS designed for use as part of electrical transmission and distribution systems (e.g.,electrical substation or neighborhood-level UPSs);
c) cable TV (CATV) UPSs designed to power the cable signal distribution system outside plant equipment and connected directly or indirectly to the cable itself. The“cable" may be coaxial cable (metallic wire), fiber-optic, or wireless (e.g., "WiFi");
d) UPSs designed to comply with specific safety-related applications, such as emergency lighting,operations or egress, or medical diagnostic equipment;UPSs designed for mobile, ship board, marine, or airborne applications; and
f) Dc-output UPSs/rectifiers.
4.2 Test temperature
All testing shall be performed at an ambient temperature of 20 to 30 °C, a relative humidity of 20% to 80%, and an altitude up to and including 1 000 m above sea level.
4.3 Instrument selection
The combination of instruments and transducers used for the measurement of UPS efficiency shall
a) provide true r.m.s. measurements of the active input and output power, with an uncertainty at full rated load of less than or equal to 0.5% at the 95% confidence level notwithstanding that voltage and current waveforms can include harmonic components; and
b) measure input and output values simultaneously.
Notes:
1) The confidence level of an instrument's uncertainty should be understood as the probability of measurements presented by such instrument being accurate within the uncertainty limits. A normal distribution of data with coverage factor 1, 960 represents a 95% confidence level which is a generally accepted level. For further information, refer to ISO/IEC Guide 98-3.
2) Simultaneous input and output measurements are generally provided through separate input and output instruments. Nevertheless, one single multi-channel instrument providing fast serial sampling ("multiplexed sampling") is also deemed to provide simultaneous measurements.CSA C813.1-14 pdf download.