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Date：11-18-2021
What is a cable fault indicator?
Fault indicator is a kind of electromagnetic induction equipment that can reflect that there is a short circuit current through the fault sign (red card).
Install the fault indicator along the distribution line. Once the line fails and the short-circuit current flows, the fault indicator will be activated and the red card will appear.
Then patrol along the line, the power supply side to the fault before the fault indicator red card, the fault indicator after the fault point does not appear red card, you can judge that the fault point is between the last red card point and the first non-red card point.
Fault indicator usually includes current and voltage detection, fault identification, fault indicator driver, fault status indication and signal output and automatic delay reset control.
Fault indicator is generally installed on overhead line, overhead cable or buried cable, switch cabinet bus, so it detects voltage by detecting spatial electric field potential gradient, through electromagnetic induction to detect line current.
Product Description
The grounding short circuit two-in-one indicator has many branches and frequent faults. Finding line faults is a headache for power line maintenance personnel. Finding a ground fault is sometimes half a day, and some find it at night in the morning, and some in Inner Mongolia. To find a few days. Therefore, the installation of the fault indicator can greatly improve the reliability of power supply, reduce labor intensity, and shorten the power outage time.
Features：
1. Provide help and convenience for troubleshooting during the line failure.
2. According to the size of the line load and the distribution of the line trend, a reasonable installation location of the fault indicator is determined.
3. When the line is running normally, the indicator is in the reset state without any indication.
4. When a short circuit or a ground fault occurs in the line, the indicator automatically turns the indicator bowl during the day and becomes a red alarm indication state; the line fault repair personnel can locate the fault area according to the indicator state.
5. The factory default time for product reset is 12h (reset time can be adjusted according to customer requirements).
6. This product provides a powerful help for line fault troubleshooting and is easy to find out the location of the fault.
7. Shorten the power outage time and further increase the power supply.
8. There is no need to power off the product installation, professional installation tools are provided free of charge, and the disassembly is convenient.
Product Principle
Short-circuit detection: The detection circuit has a sudden change in current when a short-circuit fault occurs, and the sudden change value is greater than a certain value (which can be set according to the relay protection setting) within a certain period of time to trip and power outage.
Grounding detection detects voltage changes, capacitor currents and phase conditions when grounding, detects harmonic changes, and comprehensively determines whether grounding occurs.
15kV200A insulated protective cap
Product Description
The 15kV 200A insulated protective cap is an accessory part of the live bushing. It provides an insulating cover for the live bushing and a dust-proof and moisture-proof cover for the uncharged joints.
The 200A insulated protective cap can be installed on 200A bushings, busbars and wall hanging equipment. When the busbar and cable joints are reserved for spare outlets, they must be sealed with 200A insulating caps.
product structure
Insulation layer: The unique formula and mixing technology ensure the high quality of our prefabricated EPDM insulating rubber.
Outer semi-conductive layer: prefabricated EPDM conductive rubber meets the IEEE592 standard.
Grounding eye: a grounding eye integrated with the outer semi-conductive layer, used for product grounding.
Operating ring: One-piece molded stainless steel operating ring with spring clamp fixing points.
Busbar system
Product Description
European style 630A cross and T-shaped connectors are mainly used for fully insulated and fully sealed connection of the switch bus of the ring network cabinet, matching with the standard bushing of the switch cabinet, and also suitable for branch boxes with switches. The switch cabinet is fully insulated and fully sealed, completely avoiding the fatal defects caused by high-voltage exposure in bad weather. The product made up of busbars and D and cross joints is called busbar system, which is the preferred scheme of ring network cabinet. The main advantages are: lower cost and more reliable performance. The length of the bus bar can be customized according to the customer’s requirements. D and cross connections can be made into shielded or unshielded products according to customer requirements.
