Ensuring electrical safety is a major aim of any electrical maintenance personnel. That is why when installing new cables, electrical testing should be carried out first. This testing is a quality control measure to ensure that only good cables will be used in the power facility.READ MORE >>
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Secondary injection testing is a diagnostic method of determining if a secondary protective device will respond as expected in both normal and faulted conditions. This method of testing is conducted by injecting signals directly into the trip unit that controls that operation of the circuit breaker to which it is connected.
Since this type of operational testing is performed by injecting secondary signals into the device instead of using primary current levels, it is generally considered to be a safer method of verifying the proper operation of a circuit breaker. This method of testing can be performed on circuit breakers as a part of commissioning or preventive maintenance.READ MORE >>
Circuit breakers are important devices that interrupt current when an electrical fault occurs. If they fail to operate properly during a fault condition, the electrical system can be at risk of being damaged. Additionally, the mis-operation of such a device can lead to costly impacts associated with the interruption of electrical service. Technicians should regularly test for potential problems so the circuit breakers can be verified to operate according to their intended design. Regular maintenance practices provide the opportunity to identify and correct operational issues and ensure power system reliability.READ MORE >>
With the advancement in ground resistance measurement technologies, much of the test equipment currently available for this purpose now provide the convenience of Clamp-On technologies that are in some applications preferable to the traditional 2-3 point testing methods. These clamp-on ground resistance meters provide the potential to save valuable time and effort by inducing a current into the ground through electromagnetic coupling. The jaws then sense the voltage drop around the loop and automatically calculate the ground resistance using Ohm's Law.READ MORE >>
Designed to perform secondary injection testing on the Static Trip III (STIII) overcurrent tripping system utilized on the RL breaker, the Siemens PTS-5 Secondary Injection Test Set, packaged in a self-contained case, contains a microprocessor controlled constant current source which enables rapid verification of the performance of the STIII.
Directly enter the desired test current on the numeric keypad for easy test configuration, and the self-contained, automatically controlled digital timer allows simple verification of the time-current tripping characteristics. The Siemens PTS-5 also provides a regulated DC voltage to allow functional testing of the tripping actuator.READ MORE >>
The HD Electric Company Double Vision Dual Display Wireless Voltage Indicating Phaser - DDVIP-40, is a completely wireless dual display voltage indicator and phasing tool for voltages up to 43kV. It includes a pair of lightweight, single stick line-to-ground voltage indicators that communicate with each other wirelessly.
The HDE DDVIP-40 can also be used independently as Digital Voltage Indicators.READ MORE >>
More often than not, regularly scheduled inspection and maintenance of equipment proves to be crucial, as it allows for problems that do not show any symptoms to be discovered and corrected before it’s too late. Thus, keeping equipment performing at optimal levels while saving companies money.READ MORE >>