Tag: Class-1e

IEEE/ANSI C57.12.25-1990

This standard covers certain electrical, dimensional, and mechanical characteristics, and takes into consideration certain safety features of single-phase, 60-Hz, mineral-oil-immersed, self-cooled, pad-mounted, compartmental-type distribution transformers with separable insulated high-voltage connectors. These transformers are rated 167 kVA and smaller, with high voltages of 34500 GrdY/19 920 volts and below for operation between one phase and grounded neutral, and low voltages of 240/120 volts. These transformers are generally used for step-down purposes from an underground primary cable supply.

IEEE 15802-3-1998

Superseded **Revision of 802.1D-1990 edition (aka ISO/IEC 10038). 802.1D incorporates P802.1p and P802.12e. It also incorporates and supersedes published standards 802.1j and 802.6k. Superseded by 802.1D-2004. The concept of Media Access Control (MAC) Bridging, introduced in the 1993 edition ofthis standard, has been expanded to define additional capabilities in Bridged LANs aimed at providing for expedited traffic capabilities, to support the transmission of time-critical information in a LAN environment; and providing filtering services that support the dynamic use of Group MAC Addresses in a LAN environment.

PC57.152

This guide describes diagnostic field tests and measurements that are performed on liquid-filled power transformers and regulators. Whenever possible, shunt reactors are treated in a similar manner to transformers. The tests are presented systematically in categories depending on the subsystem of the unit being examined. A diagnostic chart is included as an aid to identifying the various subsystems. Additional information is provided regarding specialized test and measuring techniques.

P2800.1

This guide provides test and verification procedures for inverter-based resources interconnecting with transmission electric power systems. This guide specifies the test equipment, test conditions and test and verification methods for type tests, production tests, facility design and as-built evaluations and commissioning tests to be performed to demonstrate the interconnection capabilities and functions for equipment connected with transmission electric power systems. Included in the test and verification procedures are all performance and functional requirements for reliable integration of inverter-based resources into the power grid, including, but not limited to, voltage and frequency ride-through performance, reactive power control, power quality, and dynamic…
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