Smart earth leakage protection

Smart earth leakage protection Contenido WGC Earth leakage transformres WGC Series · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · P1-13 WG WG Series Earth Leakage transformers· · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · P1-14 RG1M Electronic earth leakage relay with external transformer of the WG / WGC Series · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · P1-15 RGE...

Industrial earth leakage protection Smart earth leakage protection The "protection" and "continuity" of the electrical power supply are two terms that must not be separated if we wish to guarantee the safety of users and electrical installations. The recent addition of receivers or loads that generate distortion in the electricity grid (speed variators, electronic startup units, computer equipment, lighting with electronic ballasts, etc.) has made necessary the use of protection systems that can distinguish between defects in the installation and the electrical alterations that cause the unwanted...

Industrial earth leakage protection Definition When the earth leakage protection system detects a fault current, it acts on the electrical installation being protected, opening the circuit while interrupting the supply of electrical energy, thus preventing the danger of electrocution for persons when the fault current reaches dangerous values, either as a result of direct or indirect contact, including any potential damage caused to goods and materials. An earth leakage protection system is composed of three clearly different parts: }} Detecting element or sensor }} Relay }} Circuit breaker ceived...

Industrial earth leakage protection In this case, we must simply adjust the sensitivity and delay time to guarantee the adequate protection. Loads with earthed capacitors The current passes through the earthing elements as a result of the unit's operations through its capacitors. In addition, the length of cables in an electrical installation can lead to capacitive earthing faults, which would lead to this situation. The current can be injected with two methods: Permanent Leakages. The unit injects current in the earthing elements permanently. This type of behaviour is closely tied to the use...

Industrial earth leakage protection Measurement in TRMS and Class A The voltage and current wave shapes have stopped being complete sine waves since the loads distributed in the installations are not linear. The continuous and harmonic components can distort the wave shapes, whereby it will be necessary to take more accurate measurements. CLASS AC The earth leakage devices used in domestic installations or that protect loads that do not cause distortions can be of the AC Type. These devices are marked with a symbol, in compliance with the IEC 61008-1 Standard. The current range of electronic...

Industrial earth leakage protection The IEC 479-1 / UNE 20-572-92 Standard describes the effects of currents passing through the human body for a frequency of 50 Hz. As you can see, the effect depends on the root-meansquare-value of the current passing through the body and the time it takes to pass through. In accordance with the effects, we can establish zones 1 (zone with no perception) and 2 (perception zone) as safe work zones. Therefore, in terms of the protection of persons, earth leakage protection systems must act on those zones. previous graph, which indicates that the current is less...

Industrial earth leakage protection Inverse curve The IEC 61008-1 Standard allows us to incorporate a circuit opening delay for the circuit being protected, which will depend on the leakage current level. Therefore, the greater the fault current, the lower the delay. }} Instantaneous }} Selective Two types of curves are specified, as shown on the following table of values: t Standardised operating time values (s) The application of these curves to our earth leakage systems can be used to increase the continuity in the installation's power supply and avoid unwanted trips. Monitoring protection...

Industrial earth leakage protection Earth leakage protection systems with self-reclosing Given the current efficient personal and material protection requirements and obligations, and the complexity of some installations that require the continuous supply of electrical energy with the use of overload and earth leakage protection systems, CIRCUTOR has developed a wide range of units that make safety and service continuity compatible. Self-reclosing systems are an ideal solution for installations that need a constant supply of electrical energy, without the need for the usual maintenance staff:...