DL/T 5161.2-2002 in English

This part is Part 2: High Voltage Electric Power Equipment of this set of standard, which is compiled according to the notice on development and revision power sector standard plan in 1997 by the former Ministry of Power Industry (ZJK [1998] No. 28).
This part is the table form of GBJ-1990 “Code for Construction and Acceptance of Electric Device for Explosion Atmospheres and Fire Hazard Electrical Equipment Installation Engineering”, relevant national standards and professional standards and is professional standard of quality Checkout of high voltage electric powe.


1 Installation of Sulphur Hexafluoride Gas-insulated-switchgears

1.0.1 See Table 1.0.1 for installation and Checkout of sulphur hexafluoride gas-insulated-switchgear foundations and equipment supports.
Table 1.0.1 Installation of Sulphur Hexafluoride Gas-insulated-switchgear Foundations and Equipment Supports
Procedure Checkout item Property Quality criterion Checkout method and instrument
Foundation Checkout Interphase elevation error Major Less than 220kV: ≤2mm
more than or equal to 220 kV: ≤5mm Checking with gradienter
Homophase elevation error Major ≤2mm
X, Y wire error of the same set Major ≤1mm Checking with theodolite
Errors among middle phase x, y axis of circuit-breaker and x, y axis of electrical room and x, y axis of other equipment Major Less than 220: ≤3mm
more than or equal to 220 kV: ≤5mm
Elevation error between indoor and equipment foundations of electrical devices Major Less than 220kV: ≤5mm
more than or equal to 220k: ≤10mm Checking with gradienter
Error between x axis of electrical device chamber and y axis of indoor and outdoor equipment foundation Major ≤5mm Checking with theodolite
Foundation surface Errors of adjacent foundation embedded parts ≤2mm Checking with gradienter
Errors of all the foundation embedded parts ≤5mm
Supporter installation Appearance Checkout Free from mechanical damage Observation Checkout
Bolt fixing Firm Checking with spanner
Earthing Firm, in good condition of conduction wrench and conduction Checkout
Checking of anticorrosive coating Complete Observation Checkout
1.0.2 See Table 1.0.2 for installation and checkout of sulphur hexafluoride gas-insulated-switchgear major body
Table 1.0.2 Installation of Sulphur Hexafluoride Gas-insulated-switchgear Major Body
Procedure Checkout item Property Quality criterion Checkout method and instrument
Equipment Checkout Combination elements and auxiliaries Complete, free from loss and corrosion Observation Checkout
Checkout of insulated parts Clean, free from damping and deformation
Checkout of element connection terminal, plug connector and current carrying Smooth and clean, rustless
Bolt fastening Complete, free from looseness
Supports and grounded lead wires Free from rust and damage
Busbars and air chamber cylinder inwall Major Flat, smooth, burr free
Element assembly Element surface Clean, impurity-free Observation Checkout
Checkout of benzvalene form insulators Clean, free of crack
Busbar installation Busbar appearance Clean, free from oxide, scratch and uneven in surface Observation Checkout
Strip figure Checkout Major Smooth and clean, free from rust and scratch
Checkout of contact pedestals Clean, scratchless
Checkout of adsorbents Dry Observation Checkout
Flange connection Internal Checkout of elements Major Clean and without sundries Observation Checkout
Gasket Checkout Major Intact, clean and free from deformation
Checkout of seal grooves and flange faces Major Smooth and clean, free from scars
Flange connection Pilot pin is free from block
Tightening force moment of attachment bolt Meeting those specified by the manufacturer Checking with torque spanner
Checkout of operation machine Operating device stroke Meeting those specified by the manufacturer Checkout according to the manufacturer specifications
Driving torque
Action of operating devices Major Accurate, reliable Operation test
Opening and closing instructions Major Right
Interlocking device Major Action is reliable and flexible Observation Checkout
Sleeve installation Seal groove and flange surface Major Smooth and clean, free from scratch Observation Checkout
Gasket Checkout Major Intact, clean and free from deformation
Tightening force moment of attachment bolt Meeting those specified by the manufacturer Checking with torque spanner
SF 6 gas filling Checkout of inflation equipment and piping before aeration Clean, free from moisture and oil stains Observation Checkout
Circuit-breaker internal vacuum before aeration Major Meeting those specified by the manufacturer Checkout according to the manufacturer specifications
Density monitor Alarm and lockup pressure value meeting those specified by the manufacturer
SF6 gas moisture content Major Meeting those specified by the manufacturer Check test report
SF6 gas pressure Major Density monitor observation
Integral sealing test Major Checkout according to the manufacturer specifications
Earth wire installation Checkout of earth wire Free from rust and damage Observation Checkout
Connecting type Spiro union
Connecting bolt Major Fastening Checking with spanner
Flange connection of each element Major Bonding is reliable and conduction is in good condition Wrench and conduction Checkout
Earthing connection Firm, conduction is in good condition Wrench and conduction Checkout

2 Installation of Hexafluoride Sulfur Circuit Breakers

2.0.1 See Table 2.0.1 for installation and checkout of ferroconcrete prop hexafluoride sulfur circuit breakers