G-CHECK
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CIRPROTEC Specialists in lightning and surge protection Cirprotec is the specialist company when it comes to lightning and surge protection which supplies the industrial, commercial and residential sectors with the widest range of solutions in the market. Since its inception, Cirprotec has been defined by its dedicated specialization in the design and production of innovative products to provide comprehensive protection systems. The company's growth stems from a commitment to its business mission: to provide quality technological solutions related to protection against lightning and surges...

What is G-Check? The G-Check is a grounding installation monitor Cirprotec has developed a revolutionary product that checks the grounding installation status in real time and triggers a warning system if the installation is defective or deteriorated. G-Check is the first product on the market designed for continuous monitoring of grounding installations. G-Check is a standalone, compact DIN-rail mountable device for installation in panels. Deterioration of the installation grounding or terrain Equipment theft

Prevents contact voltages in solid metal from exceeding those permissible for people by allowing voltage leakage, and ensures correct and safe discharge of currents caused by voltage surges. An electrical installation should be in optimal conditions to ensure safety. In case of grounding failure, the ground system installation helps protect people and equipment from harm and damage. International standard I EC 60479 (Effects of current on human beings and livestock) Parts I and 2, addresses the effects of electric current on the human body in detail. These effects have fatal outcomes...

Loop resistance measurement and display. From milliohms to over 500 ohms. Adjusting the displayed loop resistance value. This adjustment is done by subtracting a user-defined variable from the actual value measured by the G-Check. This way users can match the value of the ground connection of the installation with the valued measured and displayed by G-Check. (If you select this option, the ohm symbol on the display will start blinking). The reading displayed by the G-Check does not necessarily have to be greater than the grounding resistance. Alarm function triggered by the PE reading. If...

G-Check uses a standard method for calculating loop resistance. This method involves applying a voltage pulse to the grounding wire and measuring the return current on the neutral. In any of the various grounding arrangements, G-Check checks the impedance of the actual leakage path of an indirect contact. This is no doubt the most important parameter to monitor. Electric charge Current loop in the event of a person's indirect contact The earth leakage current loops, as explained in the following pages, depend on each installation's grounding arrangement. In TN systems the loop is closed by...

G-Check Advantages The grounding system is of vital importance in installations. By continuously monitoring the status of the grounding connection with G-Check we gain in security and savings: Constant monitoring of groundi ng i nstal lation status • Ensuring protection of persons against indirect contact. • Preventing the destruction of property. • Ensuring proper protection against voltage surges. Reducing preventive maintenance • Ensuring adequate protection without the need for daily maintenance staff. G-Check gives you peace mind G-Check detects, in TT, TNS and TNC-S systems, any...

G-Check value depending on the grounding arrangement _ G-Check measurements of the current leakage loop have different meanings depending on the various types of grounding arrangements. In the various grounding arrangements, PE and neutral cables have different trajectories, in other words, different earth-fault current loops. It is therefore normal for G-Check readings to have different meanings in the various arrangements. G-Check does not work for IT or TNC networks. In a TT system, the loop measured by G-Check is that which appears in this figure. In this system it is checking the...

In a TNS system, the loop measured by G-Check is that which appears in this figure. Unlike TT systems, the installation's PE cable does not have an independent grounding connection. For this reason, G-Check checks the resistance of the conductor loop, not the status of the grounding connection. In this system G-Check detects the following possible incidents: Breakage or improper wiring of the earth cable installation. Breakage or improper wiring of the neutral cable. It is usual in TNS systems to connect the PE grounding cable at the entry to the installation. It becomes in effect a sort of...

Applications The grounding system of any electrical installation is essential. Therefore, G-Check is useful for any type of installation, whether remote or in the city. The following are some examples of possible applications. 0 Medium Voltage / Low Voltage Transformer

Set-up Diagram Long pulses Short pulses Adjusting the value measured by G-Check Each pulse increases I ohm Each pulse increases I ohm Installation Recommendations • To be installed only by qualified personnel. Follow terminal signs; improper connection of P-N or PE may result in distorted readings or damage to the equipment. Do not wire the netural or phase to OUT; follow instructions in the diagram. • Install G-Check with near upstream-located RCD and MCB protection against earth leakage, shortcircuit and overload. • Wire all G-Check connections without voltage and then trigger the...