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Earth Fault
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Earth Fault Indicator
The Sensorform Range of Earth Fault Indicators detects earth faults & short circuit faults on underground cables. A number of options are available for enclosure type, power source, indicator type, reset method, trip-level selection, and remote indication.
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Ground Detection and Earth Fault Location Equipment for Ungrounded or Floating DC Systems
ZX3
The ZX3 is a ground fault locator that finds grounds (current leakage) on a battery system positive rail, the negative rail, on both rails simultaneously, in a field device, battery bank or solar array/string, regardless if they are high resistance or low resistance or in a capacitive environment. It also can provide more information about the DC ground than any other equipment available, providing maximum analyzing capabilities.
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Earthing Resistance Tester
JYD-10A
transformer neutral grounding resistor is the vital need in medium voltage AC distribution network that are also called by different names like Neutral Earthling Resistors. They are taken into use to limit the current that would flow through the neutral point of a transformer or generator in the event of an earth fault. They are also used for resistance grounding of connected generators and transformers.
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DC System Earth Fault Detector
PDF1000 / 781
Wuhan Huatian Electric Power Automation Co., Ltd.
Our company's DC system grounging fault tester is a new generation of products. It can be applied to dc system measurement of any voltage level.
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Ground Fault Locator
DC Trace
SCOPE introduces DC Trace, the most advanced and user friendly DC Earth (Ground) Fault Locator. This portable instrument consisting of Signal Generator & Signal Receiver (DC TraceR) uses latest digital signal processing technology. It’s ability to detect earth faults in live DC system quickly & accurately in online condition greatly relieves the substation maintenance engineers from nightmare of earth leakages & it’s detection.
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Line Indicators
LineTroll
Fault Passage Indicators to locate short circuit and earth faults.
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20Hz Generator
Signals & Systems India Private Limited
In order to implement a 100 % stator earth fault protection based on subharmonic injection, a 20Hz voltage is injected into the generator star point. The 20-Hz generator SGEN-1001 is used in combination with the Band Pass Filter SBPF-1001 in the Stator Earth fault protection. The injection can be performed by connecting the SGEN-1001 and the SBPF-1001 to the load resistor of an earthing or neutral transformer. If an earth fault occurs in the generator star point, the 20 Hz voltage drives a current through the fault resistance. From the driving voltage and the fault current, the protective relay determines the fault resistance.
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Ground Fault Locator
K-3837
Kongter Test & Measurement Co., Limited
Kongter’s K-3837 Ground Fault Locator is developed to fast detect, trace and pinpoint virtual grounding faults on LIVE DC systems with earth fault. It will save you from long time unnecessary troubleshooting and helps to increase the stability of your electrical equipments. It is widely used in various DC systems including power utilities, locomotive, telecom and etc.
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Current Protection Relay
The main earth fault protection relays in distributions systems, power stations & large manufacturing / processing plants can fail to detect a high impedance break down to earth causing hazard to human life & potential damage to plant & equipment. In these & other situations demanding extra sensitive earth fault protection, using solid state techniques, can be applied to detect earth currents down to 0.5% of the CT nominal current.
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DC Earth Fault Locator
GFL-T + GFL-R
The DC Earth Fault locator is suitable to test the DC Battery System and Trace Ground Faults. The system is suitable for Power Plants, Sub-Stations upto 765KV and other industries. The system is highly capable in tracing and pin pointing the DC earth faults in a live system without requiring any shut downs. The receiver sensitivity of 1mA and better is capable to trace most complex fault.
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Loop Testing
Megger loop testers offer both traditional measuring techniques and state of the art “non-RCD Tripping” technology. Use these products to determine the prospective earth fault current, which is the maximum current able to flow in a phase-earth fault in an installation, and also to indicate the prospective short circuit current which is the maximum current able to flow in the event of a phase-neutral fault.
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Multi-purpose Tester
DEL-101
Standard Electric Works Co., Ltd
● Mains wiring polarity check.● ELCB/RCD testing.● Measuring ear for line current.● Measuring ear for leakage current.● Helps calculate insulation resistance.● Helps calculate power consumption.● Helps fault finding of standing earth fault.● Fused main adapter.● Appliance testing (with the aid of a clamp meter).● Fused appliance socket.● No batteries required.● HRC fuse inside.● Fused, color-coded universal test sockets.● Universal mains IEC Lead.
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20Hz Injection Kit Monitoring System
Signals & Systems India Private Limited
The Display used to monitor the 20Hz and 50Hz current passing through NGT transformer. This could help to monitor the stator earth fault and could record the current every minute. The current shall be displayed in milliamps for both 20Hz and 50Hz. If an earth fault occurs in the generator star point, the 20 Hz voltage drives a current through the fault resistance. The current can be measured using clamp-on CT which would be clamped between load resistor and NGT. It gives an indication of the current values are lower or higher than the set threshold.
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Digital LOOP/PSC/EARTH Tester
1824 LP
Standard Electric Works Co., Ltd
● Microprocessor-controlled.● Measures Earth Resistance without the need for poles in the ground or external measuring wires.● Earth measurement uses the real earth current path and the current generated by the electric network, without the need for any disconnection.● The Earth Resistance displayed is exactly the earth resistance that the earth current will need to go through if an earth fault occurs. (you do not need to add all the bonding points and connection paths)● Displays voltage supply at the transformer(Line to Neutral), without loading the transformer.● Single one smart push button operation; ON, Scroll through results and menus.● Checks wiring integrity (LEDs).● Auto-off / Auto-ranging (software range).● Color-coded test leads.● Combined prospective short circuit current, loop, and earth tester.● Loop test for L-E and PSC between L-N.● Voltage test L-N.● Display can be customized for large orders.
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Ground Fault Location
Kongter Test & Measurement Co., Limited
Kongter offers a whole line of ground fault locator from basic to advanced model to fast detect, trace and pinpoint virtual grounding faults in DC systems when systems are LIVE (working online). Without injecting any signal to the DC system, they are safe to your existing system. With Kongter’s unique technique for signal tracing, these ground fault locators are much faster and more effective to find the earth fault in the field than its peers.
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Detection of Earth Faults (PtG) and Short Circuit (PtP) Faults
CableTroll 2330
CableTroll 2330 is an indicator for detection of earth faults (PtG) and short circuit (PtP) faults on multi and single core cable terminations. The unit uses NorTroll type current sensors.
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High Impedance Busbar Differential Relay
MIB
The MIB, a member of the M II family of economical and highly functional digital protection relays, is a microprocessor based relay that provides three phase high impedance differential protection for Substation Bus-bars of any voltage level. Use the MIB also to protect electrical machines like transformers, generators or motors against restricted earth faults.
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Through Hole type DC Current Sensor／for DC Leakage Current Measurements
DCZCT-60NK
MULTI MEASURING INSTRUMENTS Co., Ltd.
*DC earth fault measurement*DC leakage current measurement*Least affection from the magnetization of core and temperature fluctuation*Convenient ＋24V single polarity power supply
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Cable Indicators
CableTroll
They are installed on Ring Main Units in distribution substations. They are used to detect short circuit and earth faults, and can be installed on most types of cable terminations. Some units will give separate indications for short circuit and earth faults, locally by flashing diodes and remotely through separate relay contacts or additional ComTroll communications modules.
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Through Hole type DC Current Sensor／for DC Leakage Current Measurements
DCZCT-20MH
MULTI MEASURING INSTRUMENTS Co., Ltd.
*DC earth fault measurement for solar power system*Least affection from the magnetization of core and temperature fluctuation*DC leakage current measurements*Convenient ＋5V single polarity power supply
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Fault Passage Indicator for Lines
LineTroll R400D
LineTroll R400D Fault Indicator indicates earth- and short-circuit faults and can distinguish between permanent and transient faults. The indicator has two sensors and use both the electrical field and the magnetical field to detect faults on all three phases.
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Underground Cable Fault Locator
KM-CFPL-620 /620B
Kusam Electrical Industries Limited
“KUSAM-MECO” underground Cable Fault Pre-locator is an automatic Cable Fault Locator which adopts ARM, FPGA & Dot Matrix Color LCD display Technology. This tester combines both pulse reflecting technology (TDR) & (intelligent Bridge testing (Bridge) (Model-KM-CFPL-620B) for measuring the exact fault location such as broken line, cross faults, earthing, (poor insulation & poor contact of the lead covered cables as well as plastic cables. (Model-KM-CFPL-620B)).It is a microprocessor based fault locator with a user friendly menu. It is easy to operate. It tests almost all telecom & signal cables. It has an English menu which is easy to understand & use. With Megameter & Ohmmeter it enables to test insulation resistance & loop resistance. It has USB Port for uploading test data to computer
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Loop Impedance Tester
CZ20054
Australian and New Zealand standards mandate testing of fault loop impedance on circuits not protected by RCD's, both at installation and after maintenance. The CZ20054 Loop Impedance Tester conducts earth fault loop impedance and prospective short circuit current (PSC) tests. The Aegis Loop Impedance Tester takes the confusion out of loop/psc testing by providing an automatic wiring check upon connection and single button operation.
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Relay Test Set
RNT-5A
This is a portable testing kit in one unit, suitable for testing protective relay, over current relay, earth fault relay, protective device, circuit breaker, tripping coils etc. The set is designed for both laboratory and field use.
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Through Hole type DC Current Sensor／for DC Leakage Current Measurements
DCZCT-45NK
MULTI MEASURING INSTRUMENTS Co., Ltd.
*DC earth fault measurement*DC leakage current measurement*Least affection from the magnetization of core and temperature fluctuation*Convenient ＋24V single polarity power supply
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Ground Fault Protection Monitors
The Earth Fault Resistance Monitor (EFREM) and the Rotor Health Monitor (RHM) provide wireless rotor ground fault and temperature monitoring for generators and motors. The systems replace older slip ring contact ground fault detectors on any synchronous generator or motor.
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Earth Fault Detector
K-3838
Kongter Test & Measurement Co., Limited
Kongter’s K-3838 earth fault detector is the updated model which is developed to fast detect, trace and pinpoint virtual grounding faults on LIVE DC systems where electrical cables have breakage and current lost to ground. It will save you from long time unnecessary troubleshooting and helps to increase the reliability of your electrical equipments. Our unique technique makes it safe and fast to handle earth fault in DC systems that are working online.
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Detector of Earth Faults on Multi/Single-Core Terminations
CableTroll 2310
CableTroll 2310 is an indicator for detection of earth faults (PtG) on multi-core and single core cable terminations. The unit uses NorTroll type current sensor (CT)
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Through Hole type DC Current Sensor／for DC Leakage Current Measurements
DCZCT-20M
MULTI MEASURING INSTRUMENTS Co., Ltd.
*DC earth fault measurement for solar power system*Least affection from the magnetization of core and temperature fluctuation*DC leakage current measurements*Current measurements for small DC motor*Convenient ＋5V single polarity power supply
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Relay Test Set
Cambridge Instruments & Engineering Co.
“CIE” Relay Test Set is ideal for Testing Protective relay, over current relay, earth fault relay by secondary injection method with help of digital timer.
