Distribution line fault indicator
1, product classification, display mode, type and installation
Name display method type installation direction of the installation and fixing method
Overhead line
Earthing short circuit fault indicator flop show (Combo) AWKD-OPH-F non directional pressure spring clamp
Intelligent earthing short circuit fault indicator flop light-emitting display (four in one) AWKD-OPH-FG non directional pressure spring clamp
Installation position
(method of installation is attached) substations or switching station exit, to determine fault or in the station outside the station
Trunk and branch offices, the branch or to judge the fault section
Connection cables and overhead lines, indicating the fault on the overhead line or cable line (bus)
The user into the high-voltage line, used to judge the user fault
High voltage network power supply base at the poles, used to determine whether the fault in the base tower
2, basic principle
Overhead line to ground short circuit fault indicator to locate the fault point. According to the method of displaying or different installed position, its principle is different. Can detect the grounding and short-circuit signal system at the same time, and instructions
Figure 1, flop display and light emitting display type earthing short circuit fault indicator outline drawing
Overhead the flop type (Combo) overhead flop luminous type (four in one)
2.1 the flop display principle
Grounding detection principle: detect the ground instantaneous transient capacitance discharge current, and the detected line voltage decreases, think that the grounding line, or line not grounding. As shown by the 2# line C phase 3, 6, 9 indicators have not action, you can judge out D point earthing fault. Flop show and the 12 indicator
Figure two, flop show ground fault principle diagram
Short circuit detection principle: according to the phenomenon of short circuit, short circuit in instantaneous current positive mutation, protection action power as a basis for action. By the 2# line B phase 2, 5, 8 and 3# C phase indicator line 3, 6, 9 and 11 display indicator turn red indicator and the 12 indicator not flop, can judge the short-circuit fault occurred D point.
Figure three shows the schematic diagram of short circuit fault, the flop
The 2.2 light emitting display principle
Grounding detection principle: sampling ground instantaneous capacitor current first half wave voltage and grounding moment of first half wave, compare its phase, when the sampling capacitor current grounding transient mutation and greater than a certain value, and voltage ground moments of the first half wave phase, at the same time the conductor to ground voltage is reduced, it is judged line earthing line, otherwise not grounding, give light signal.
Short circuit detection principle and the flop show the same principle.
Method for judging fault bit and flop show roughly the same. Is different before and after fault may also light, but light color does not correspond to the fault point, namely before red, green point of failure or no light: or fault point before the hair green, figure four, photoelectric display indicator fault point red or light.
2.3 intelligent earthing short circuit fault indicator (four in one) features
- set flop and luminous function as one: two kinds of display indicator action after the flop and luminescence in practical application has some shortcomings, flop day obvious indication and not conducive to the observation at night, light is the opposite. Intelligent provides a good solution to this contradiction. Two independent battery guarantees not only to the battery capacity increased, at the same time, so that the two are not caused by interference.
- emitting light at night, during the day to stop blinking, thus effectively improving the use time of the battery. The design indexes: the illuminance is smaller than 1E (Lux) light.
- improve signal detection sensitivity
Hand - signal detection has new improvements and improve. Increase the brim to improve voltage detection is not affected by the rainy day limit.
- increase power for half an hour after the reset function: Line troubleshooting and restore power supply within 24 hours, the power supply within a half hour indicator will be set at 24 hours after the automatic reset. Automatic reset; line not to send electricity in 24 hours, indicator
3, the technical parameters of the technical index of overhead lines flop show overhead line light emitting display intelligent flop light-emitting display
Type AWKD-OPH-F AWKD-OPH-G AWKD-OPH-FG
Can detect the fault short-circuit fault type permanent and transient; grounding fault of metal, non-metallic
Application of voltage level of 6-35KV 6-35KV 6-35KV
Application of load current 0-500A 0-500A 0-500A
The use of places of overhead line
Application of wire section of 25-400mm2 25-400mm2 25-400mm2
The standard reset time of 24 hours, 24 hours flop 24 hours, less than when the 1E luminous sensitivity
Action 3000 times 3000 times 3000 times
Applicable environment temperature of -35 DEG to 65 DEG -35 DEG to 65 DEG -35 DEG to 65 deg.
Installation pressure spring clamp

 

配电线路故障指示器

名        称	显示方法	型 号	安装方向性	安装固定方式
架空线路 接地短路故障指示器	翻牌显示（二合一）	AWKD-OPH-F	无方向	压簧夹紧
智能型接地短路故障指示器	翻牌发光显示（四合一）	AWKD-OPH-FG	无方向	压簧夹紧
安装位置 （安装方法见附页）	变电站或开闭站出口处，以判断故障在站内或是站外 主干线和分支处，判断故障所在的分支或区段 电缆与架空线连接处，指示故障在架空线或电缆线上（母排） 用户高压进线处，用于判断用户故障 高压联网供电基杆塔处，用于判断故障点是否在本基杆塔上