IEEE C37.66-2005 pdf free download.IEEE Standard Requirements for Capacitor Switches for AC Systems (1kVto38kV).
IEEE C37.66 applies to single- or multi-pole ac switches for rated maximum voltage above 1 kV to 38 kV for use in switching shunt capacitor banks (see the note in this clause). This standard covers the application of capacitive load switching wherein the capacitive loads are separated by sufficient inductance to limit the high-frequency transient-making peak current to the peak values shown in Table 2 and Table 3. Switches designed and built in accordance with this standard are not intended for use as fault current or non- capacitive load current interrupting devices.
NOTE- This standard is intended to be a comprehensive standard for all“specific duty” applications of switches in the area of switching shunt capacitor banks, but it is limited in scope up to and including 38 kV. However, subject to agreement between the user and manufacturer, it may be used as a specification guide for other rated voltages.’
2. Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments or corrigenda) applies.
ANSI C63.2-1996, American National Standard for Electromagnetic Noise and Field Strength Instrumentation, 10 kHz to 40 GHz- Specifications.
IEC 60694-2002, Common Specifications for High-Voltage Switchgear and Controlgear Standards.
IEEE Std 4TM- 1995, IEEE Standard Techniques for High- Voltage Testing.
IEEE Std 1247TM_ 1998, IEEE Standard for Interrupter Switches for Alternating Current Rated Above 1000 Volts.
IEEE Std C37.100TM-1992 (Reaff 2001), IEEE Standard Definitions for Power Switchgear.
NEMA 107-1987 (Reaff 1993), Methods of Measurement of Radio Influence Voltage (RIV) of High-Voltage Apparatus.
3. Definitions
For the purposes of this standard, the following terms and definitions apply. The Authoritative Dictionary of IEEE Standards Terms should be referenced for terms not defined in this clause.
The definitions of terms contained in this standard, or in other standards referred to in this document, are not intended to embrace all legitimate meanings of the terms. They are applicable only to the subject treated in this standard. For additional definitions, see IEEE Std C37.100- 1992.7 An asterisk (*) indicates that, at the time this standard was approved, there was no corresponding definition in IEEE Std C37. 100-1992. A dagger (t) indicates that the definition in this standard differs from that of IEEE Std C37.100-1992.
3.1 capacitive load: A lumped capacitance that is switched as a unit.
3.2 eapacitor switch: A switch capable of making and breaking capacitive currents of capacitor banks.
3.3 operation: A closing fllowed by an opening.t
3.4 pole discrepancy: The time interval, in electrical degrees, between the first capacitor switch pole contact and the final capacitor switch pole contact to mechanically close or open when single-pole capacitor switches are configured as a three-phase system.
3.5 rated capacitor switching current: The rms symmetrical value of the highest capacitive load current that a device is required to make and interrupt at a rated maximum voltage as part of its designated operation duty cycle.IEEE C37.66 pdf download.