T/CES 193-2023 Technical specification for metal tube-type resistor used in high-voltage direct current transmission converter valve

Scope

Scope: This document specifies the technical requirements, test methods, and inspection rules for metal tubular resistors used in high-voltage direct current (HVDC) transmission converter valves. This document applies to products required in the fields of power generation, power transmission and conversion converter systems, static var compensators (SVGs), and other electrical equipment with DC voltages exceeding ±300 kV. Main technical content: This document stipulates the technical requirements, test methods, and inspection rules for metal tubular resistors used in HVDC transmission converter valves. (1) Technical requirements mainly include the operating environmental conditions of the resistors, their nominal resistance values, insulation resistance, rated power, AC withstand voltage, lightning impulse test, and other key technical parameters. (2) Inspection and testing methods mainly include appearance and dimensional inspection, resistance value measurement and allowable deviations, insulation resistance measurement, lightning impulse test, AC withstand voltage test, partial discharge test, time constant measurement, terminal mechanical strength test, resistance change with temperature test, collision test, vibration test, pulse withstand test, power withstand test, life test, wet heat stability test, and flame retardancy grade test. (3) Inspection rules mainly include type testing, factory testing, and product inspection rules for random sampling upon arrival. Inspection items include appearance and dimensional inspection, resistance value measurement and allowable deviations, insulation resistance measurement, lightning impulse test, AC withstand voltage test, partial discharge test, time constant measurement, terminal mechanical strength test, resistance change with temperature test, collision test, vibration test, pulse withstand test, power withstand test, life test, wet heat stability test, and flame retardancy grade test.

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