Fault Indicator Fault Locator Overhead Line Indicator

Product DescriptionIntelligent overhead line fault indicator
FunctionsIt accurately detects short-circuit and ground faults of the line, and accurately measures the current condition of the line.The fault indicator and communication terminal can have real-time two-way-communication via wireless:Fault indicator can report the fault status and measurement data of the line to the communication terminal.Fault indicator can receive the calling command, parameters resetting and program update.It has the function of three-phase phase angle calculation and zero-sequence current synthesis.
Features
Self-sustain
Indication
The indicator is made with new material and special circuit designed. When the wire’s load current is greater than 3A, it begins to get the power from the wire. When the wire load current is greater than 30A, it can work normally without the lithium battery totally.
The indication is done by three flashing LEDs for a clear visibility and three red display areas work by motor for a clear daytime visibility.
Single-flashing means ground fault indication; double-flashing means short-circuit fault indication.
Ground fault detection
Short-circuit fault detection
It can monitor the mutational increment of the grounding current (the parameters can be set on-line so that the detection can be more sensitive and reliable).
1. Quick break and over-current criterion. It can be set online or by PDA. It can suppress inrush current and feedback power supply, so that it can ensure the consistency of the operation with the substation outlet.
2. Adaptive load current criterion.
Live mounted and removal
Current and voltage measurement
The indicator can be mounted under live conditions with the help of an adapter and a hot stick.
Real-time monitoring of line load current, wire-to-ground voltage induction, instead of using current transformers and live displays.
Reset mode
Anti-rust design
1. 1~48h timing reset(can be set on-line, default 24h).
2. Auto-reset after finishing the emergency repair and restoring power transmission.
3. Manual reset through a wireless setting terminal (PDA) at site.
The tension discs are made of high-quality nylon material. The groove springs are made of stainless steel so that they won’t melt with the wire. The thread jamming structure parts are made of stainless steel and with antirust design.
Anti-refuse operation design
Anti-misoperation design
We adopt large cross-section design of magnetic circuit, it has good permeability performance, accuracy measurement and high sensitivity. They can be very sensitive no matter in the rural power line small load current or small mutations conditions or in the city network line two phase short circuit or slow flow conditions.
It has anti misoperation design, when the inrush current occurs after the non-loading line is switched on and anti misoperation of non fault branch when it’s on.
Communication mode
Auto-upgrade
Embedded short-range two-way wireless communication frequency RF modules, the GPRS data can communicate via data collection terminal or wireless repeater.
Parameters can be dynamically modified and automatically upgraded online at any time to achieve better and more economical services.
Technical parameters
Applicable power systems
Rated frequency
50Hz/60Hz
Rated voltage
6~35kV
Operating current
0~630A
Available wire diameter
8 ~ 32mm
Neutral grounding modes
All kinds of grounding modes
Measuring range and accuracy
Load current
0~630A(0~100A,±1A;>100A,±1%)
Electric field
0~3345
Line temperature
–40℃~+85℃,±1℃
Self-sustain voltage
0~100%,±0.5%
Battery voltage
0~3.6V,±1%
Synthesis of zero sequence
±1%
Angle of three phases
±1%
Indication of the line
Transient characteristic fault indication
Support (low resistance grounding/arc suppression coil grounding)
External signal fault indication
Support (it can identify typical characteristic signals applied outside ground fault)
Indication
Red flag display and LED flash
Visual angle
360°
Battery
Self-sustain
When the load current of the line ≥5A
Battery voltage
3.6V,8.5AH
Operating environment
Ambient temperature
–40℃~+85℃
Ambient humidity
0%~95% (without condensation)
mechanical characteristic
Weight
< 750g
Protection class
IP68
Grip strength
Vertical direction: 8 times of its own weight;
Parallel direction: 50N.
Install and uninstall times
No damage after 50 times
Life
Service life
>8 years
Electrical life
>3000 times