The term live service refers to:
This standard mainly refers to the use of international standards IEC743 (1983) "Living Tools and Equipment Terms."
1 Topic content and scope of application
This standard specifies the common terms used during live operation.
This standard applies to the preparation of live working standards, procedures and technical exchanges at home and abroad.
2 basic terms
2.1 live working
Uninterrupted operation of high-voltage electrical equipment and facilities.
2.2 Equipotential work equal potential working
The worker is at the same potential as the live body.
2.3 Earth potential working
The operator is at live work on the ground potential.
2.4 Indirect operation (insulated operating lever operation) indirect working(hard pole working)
The operator is at ground potential during live operation and uses an insulating tool to contact the high voltage live body.
industry.
2.5 rain working
Live work with special rain-proof insulation tools on rainy days.
2.6 Along insulator string operation
Operators wore shielding clothes along the string of insulators into the strong electric field.
2.7 Intermediate potential operation midial potential working
The operator is at work on the potential between the charged potential and the ground potential during live working.
2.8 All-insulation working
In live working, the operator is in direct contact with the high-voltage electrified body under full insulation.
industry.
2.9 Comprehensive maintenance of synthetic live-line overhaul
The live equipment is used to carry out various items of maintenance at the same time using the live working method.
2.10 Tools for live working tools for live working
Tools used for live work.
2.11 live part live part
An operating voltage or induced voltage, or a conductive portion in a high voltage electric field.
2.12 high field area
The area with the highest electric field strength of a charged body is called the strong field area.
2.13 Earth potential Earth potential
The potential is equal to the potential of the earth.
2.14 High potential
For two or more potentials, the highest potential is called high potential.
2.15 Equipotential equal potential
The two potentials with equal conductor potentials are called equal potentials.
2.16 depart from potential
Refers to live work when the operator leaves the live body.
2.17 shift of potential
In live work, the operator moves from one potential to another.
2.18 restoration restoration
Restore the power equipment to its original state.
2.19 Electrostatic induction
Under the influence of an electric field, the phenomenon of charge separation on the object is caused.
2.20 safety voltage
The voltage applied to the human body will not cause harm to the human body in a certain period of time.
2.21 live test
In the absence of power, the operator tests the electrical equipment.
2.22 Limit of the human body activity range
The minimum distance that the human body is allowed to move during live work.
2.23 Equipotential electrician equal potential operator
In live work, the operator is at the same potential as the live body.
2.24 tower on electrician operator on tower
When working on electricity, workers on poles.
2.25 ground electrician operator on ground
When working on electricity, workers working on the ground.
2.26 External surface electric field electric feild outside body
The human body is in a strong electric field, and the electric field near the surface of human skin.
2.27 Body resistance
The resistance between the two ends of the human body, including skin resistance and body resistance.
2.28 body impedance
The vector sum of human resistance and capacitive reactance.
2.29 body current
The current flowing through the human body through the human body impedance.
2.30 body safety current
The maximum human current that causes ventricular fibrillation.
2.31 Get rid of current let-go current
The maximum human current that humans can tolerate and can free themselves.
2.32 Deadly current deadly current
Life-threatening minimum human current in a short period of time.
2.33 leakage current
The current through the insulator volume and surface resistance.
2.34 main insulation
Isolated dielectric plays a major role in the dielectric.
2.35 auxiliary insulation
In addition to the main insulation, in order to increase the safety of additional independent insulation.
2.36 sensory current
The smallest current that can cause people to feel.
2.37 effective insulation distance
The length of the pure insulating part after removing the conductive part in the insulation.
2.38 safety distance
The shortest insulation distance needed for live working under the conditions of safety.
2.39 complex gap
Total gap combined by two or more air gaps in series.
2.40 well-behaved insulator
Insulators that are completely intact and whose resistance values ​​meet the operating standards.
2.41 low-value insulator
Insulators with good shape, but reduced resistance values ​​that do not meet normal operating standards.
2.42 zero insulator insulator
Insulators with good shape but zero resistance.
2.43 normal voltage test
The voltage test of the insulation tool as a whole according to the test voltage standard.
2.44 piece voltage test piece by voltage test(piecewise test)
Test the voltage and voltage of the insulation tool segment by segment.
2.45 maintenance test maintence test
Tests on live working tools and equipment are conducted periodically.
2.46 routine experiment routive test
Tests are performed on each device during or after manufacture to determine if it meets a certain standard.
2.47 Sampling test
Several samples were randomly extracted from a batch of products for testing.
2.48 acceptance test acceptance test
A test performed to execute the contract to prove to the user that the device meets certain conditions in the standard
Examination.
2.49 Insulating tool
A tool made mainly of insulating material.
2.50 end fitting
Parts (usually metal) installed at the end of an insulating tube (or rod).
2.51 Insulating rod
Solid rod made of insulating material.
2.52 insulating tube
A tube made of insulating material that can be hollow or filled with a filler.
2.53 Insulation Board
Board made of insulating material.
2.54 insulating mast assembly
An insulated cantilever mounted on the pole with a support tool to lift the conductor away from the insulator.
2.55 boom equipment pole pole assembly (roll layout)
Various support tools consisting of support rods, carriages, contact wheels, rod tips and insulated forks.
2.56 Hand pole
Insulating rods used to operate equipment components within a certain distance.
2.57 Support rod support pole
Insulation rods used to support or suspend wires.
2.58 水柱 water column
Refers to the water sprayed by the water gun from the water spout to the columnar part of the flow of water that contacts the electrical equipment.
2.59 water resistance
Refers to the resistivity of water.
2.60 water washing
Using the flushing and dissolving action of the pressure water column, the dirt on the surface of the insulator is flushed.
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