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ITU-T K.95 - SURGE PARAMETERS OF ISOLATING TRANSFORMERS USED IN TELECOMMUNICATION DEVICES AND EQUIPMENT - STUDY GROUP 5 Organization: ITU-T
Date: 2016-06-01
Description: The surge parameters of the isolating transformer insulation barrier covered by this Recommendation are: • rated impulse voltage; • input winding to output winding capacitance; • insulation resistance. Additional parameters for signal isolating transformers are: • core saturation voltage-time product; • rated input winding root mean square (rms) current for a given temperature rise.
DS/EN 60034-27-3 - ROTATING ELECTRICAL MACHINES – PART 27-3: DIELECTRIC DISSIPATION FACTOR MEASUREMENT ON STATOR WINDING INSULATION OF ROTATING ELECTRICAL MACHINES Organization: DS
Date: 2016-07-07
Description: These guidelines are valid for rotating electrical machines with conductive slot coatings operating at a rated voltage of 6 kV and higher. This standard applies to individual form-wound stator bars and coils outside a core (uninstalled), individual stator bars and coils installed in a core and complete form-wound stator winding of machines in new or aged condition.
IEEE PC62.69 DRAFT - DRAFT STANDARD FOR THE SURGE PARAMETERS OF ISOLATING TRANSFORMERS USED IN NETWORKING DEVICES AND EQUIPMENT Organization: IEEE
Date: 2014-05-01
Description: This standard sets terms, test methods, test circuits, measurement procedures and preferred result values for the surge parameters of isolating transformers used in networking devices and equipment three types of isolating transformer are considered; mains low frequency power, high frequency power (switching mode power supplies) and signal (eg Ethernet data) the surge parameters of the isolating transformer insulation barrier covered by this standard are: - Rated impulse voltage - Input winding to output winding capacitance - insulation resistance Additional parameters for signal isolating transformers are: - Core saturation voltage-time product Purpose The main purpose of this standard is to define a series of transformer impulse withstand voltage ratings that are higher than those of IEEE Std 802.3TM [B6]1 with the intent to improve transformer insulation performance in uncontrolled environments.
SAE/TP - 2010-01-1798 - HIGH TEMPERATURE, HIGH FREQUENCY SIC THREE PHASE INVERTER FOR AIRCRAFT APPLICATIONS Organization: SAE/TP
Date: 2010-11-02
Description: The core of the electrical design was to take advantage of the low input capacitance, high switching frequency (50 kHz) and high temperature capability of the SiC JFET in order to obtain a high power density inverter.
IEEE C62.69 - THE SURGE PARAMETERS OF ISOLATING TRANSFORMERS USED IN NETWORKING DEVICES AND EQUIPMENT Organization: IEEE
Date: 2016-01-29
Description: The surge parameters of the isolating transformer insulation barrier covered by this standard are as follows: Rated impulse voltage Input winding to output winding capacitance Insulation resistance Additional parameters for signal isolating transformers are as follows: Core saturation voltage-time product Rated input winding rms current for a given temperature rise This standard does not cover the transformer parameters required to help ensure appropriate operation on the service (e.g., signal transformer return loss).
NR/L3/SIGELP/27420 ISSUE 1 - TARGET EARTH CALCULATION METHODOLOGY FOR SIGNALLING POWER SYSTEMS - COMPLIANCE DATE: 6 JUNE 2015 Organization: NR
Date: 2015-06-06
Description: The calculation method detailed is applicable to the following signalling power distribution systems: a) single-phase, IT-individual with 2-core unarmoured cable; b) single-phase, IT-individual mixed with IT-group, with 2-core unarmoured cable mixed with either 2-core or 3-core armoured cable; c) single-phase, IT-collective with 3-core armoured cable; d) single-phase Class II signalling power distribution systems designed and installed in accordance with NR/L2/SIGELP/27410.
NR/L3/SIGELP/27425 ISSUE 1 - EQUIVALENT CABLE SIZES FOR SIGNALLING POWER DISTRIBUTION CABLES - COMPLIANCE DATE: 9 JANUARY 2017 Organization: NR
Date: 2016-09-03
Description: This standard may also be used to derive the equivalent cables, without the need for design, for the following: a) Equivalent aluminium conductor cables for copper conductor cables;and b) Equivalent four-core cables for two-core cables. Exclusions This standard is not intended to be used for wholesale cable renewals of signalling power feeder cables where electrical circuit parameters are likely to be significantly affected.
ASTM D7954/D7954M - STANDARD PRACTICE FOR MOISTURE SURVEYING OF ROOFING AND WATERPROOFING SYSTEMS USING NON-DESTRUCTIVE ELECTRICAL IMPEDANCE SCANNERS Organization: ASTM
Date: 2015-06-01
Description: NOTE 1—The term capacitance is sometimes used when describing impedance scanners. Capacitance scanners are purely capacitive as they do not have a resistive component.

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