Dispozitiv de protectie la supratensiune cu sistem de monitorizare CPT Cirprotect SAFEGROUND®

Limba: Engleza

15 afisari

Tip documentatie: Catalog, brosura

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PREMIUM SURGE PROTECTION NO EARTH, NO PROTECTION ® GROUND STATUS NO CONNECTION POOR CORRECT DID YOU KNOW? Nobody knows what % of installed surge protection devices provide effective protection SAFEGROUND®, monitoring the grounding system in For the protection to work properly, the correct status of the grounding system in an electrical installation is essential . DID YOU KNOW that nobody knows what percentage of installed surge protection devices provide really good protection? SAFEGROUND® is the first protection device on the market that, in addition to indicating that it is properly wired, guarantees that there is an adequate path to ground, which is essential if the protection device is to shunt the energy peaks to ground effectively. ® NO CONNECTION POOR CORRECT TECHNOLOGY SAFEGROUND® is based on the impedance loop technology already patented, sold and implemented by Cirprotec in thousands of protection solutions. SAFEGROUND® patent pending. GROUND STATUS INDICATOR

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Continuous LED display of ground status. THE BEST SPD ON THE MARKET SAFEGROUND® is the premium protection device in the Cirprotec PSM range, designed according to the most exacting standards. Intelligent protection. WIRING SAFETY The only protection device on the market that tells you when it is properly installed, avoiding risks due to electrical wiring errors. the surge protection device itself SAFEGROUND® THE PREMIUM SOLUTION FOR THE MOST DEMANDING INSTALLATIONS SAFEGROUND®’s simple information makes it the ideal ally for both unskilled personnel and maintenance professionals specialised in ground connections. Helps avoid situations that might cause power cuts, repair costs, with the resultant damage to your brand image. Provides additional information about the grounding system, with potential synergies for protection and safety in general, not just for surge protection. 1 CONFIRMATION OF PROPER INSTALLATION Almost 25 years of experience in the sector confirm that it is

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relatively common for wiring errors to occur during the installation of surge protection devices. These errors result in the loss of protection or risks to the installation itself. When the SAFEGROUND® LED is green, it means that the protection device is properly wired and powered up. Green for Go. 2 EFFECTIVE SURGE PROTECTION Even when equipped with surge protection devices, the electrical installation may still be subject to the effects of overvoltage if the ground connection is inadequate or in poor condition. When the SAFEGROUND® LED is green, it indicates that the ground path is good enough to shunt the energy peaks to ground effectively. Green for Go. 3 SAFETY INFORMATION IN THE EVENT OF INDIRECT CONTACT Just as happens with surge protection devices, the safety of the electrical installation in the event of indirect contact is based on there being a grounding connection. When SAFEGROUND® cannot detect any ground connection, it is advisable to check the installation statu

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s. SAFEGROUND® Technology The importance of the ground connection Surge protection devices discharge excess energy to ground, thus limiting the peak voltage to a value acceptable for the electrical equipment connected. SPD A ground in proper conditions is therefore an aspect not to overlook when it comes to effective surge protection. Continuously monitoring the state of the ground connection ensures proper operation of surge protection devices. EQUIPMENT Operating principle of an SPD Impedance loop method The loop impedance method is a system for checking the entire grounding system by acting physically not on earth roads, but solely on the low voltage line. L1 Sending pulses and measuring the voltage response makes it possible to measure the impedance of the path, which usually includes the grounding system and wiring and the return path through the transformer coil. L2 L3 N EQUIPMENT EQUIPO Patented Cirprotec technology PE SAFEGROUND® is based on continuous monitoring

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technology using the impedance loop technology already patented, sold and implemented by Cirprotec in thousands of protection solutions worldwide. Diagram of loop impedance measuring used by SAFEGROUND® The differentiating factor in this technological development (patent pending), is the incorporation of this technology into the confined space of a surge protection device, providing added value to the piece of equipment, and taking advantage of the positive synergy between the grounding system and the protectors. SAFEGROUND® is not intended to be a resistance meter; rather it helps provide relevant information about the surge protector and potentially about the installation. TRANSPORT WATER TREATMENT COMMERCIAL DATA CENTER INDUSTRIAL Effectiveness of an SPD depending on the ground connection No earth, no protection If the surge protection device does not have an adequate path to ground for discharging voltage peaks, the protector will be forced to operate under sub-optimal c

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onditions. The effectiveness of surge protectors is indeed closely linked to the grounding system, since a high impedance path may increase the exposure of sensitive equipment to the effects of the overvoltage. To understand the relationship between the quality of the ground connection and the effectiveness of overvoltage protection, people often use a very intuitive hydraulic simile (Figure 1). If we equate the energy of the overvoltage to a specific volume of liquid, the ground connection may be thought of like a funnel. There is a direct relationship between the diameter of the funnel opening and the quality of the ground connection. Once the funnel has drained the entire volume of liquid, the overvoltage will have been shunted to ground and the equipment will see a completely normal voltage. Figure 2 compares what happens to a bad ground connection (funnel on the left - small opening) to what happens to a good one (funnel on the right - big opening) in the event of an overvoltage.

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We can see how a ground connection with higher resistance (funnel on the left) is saturated with the energy of the discharge (the funnel overflows because it is incapable of draining fast enough). Intuitively, this prolongs the time during which the equipment to be protected is subjected to the effects of overvoltage, and which therefore suffer more wear (the funnel takes longer to empty due to its smaller opening). VOLUME OF LIQUID amount of energy of the voltage surge FUNNEL Ground connection of the SPD DIAMETER OF THE FUNNEL Ø Quality of the ground connection Figure 1. A poor ground connection means reduced capacity to discharge the overvoltage compared to a good connection. Figure 2. Slower dissipation of the overvoltage means the equipment is exposed to its effects for longer. Since all the equipment is referenced to ground, this can even lead to the current, unable to find a better escape route, doing direct damage to the equipment and rendering the protection ineffective (

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Figure 3). In the extreme case of loss or lack of a ground connection, the surge protection device becomes totally ineffective. Figure 3. In the absence of an optimum discharge path, the voltage surge will overwhelm sensitive equipment. Datasheet. PSM-40 SG TECHNICAL FEATURES PSM2-40/230 SG 77727756 MODEL PSM4-40/400 SG 77727806 Designation according to EN 61643-11 Type 2 Designation according to IEC 61643-11 Class II Nominal voltage AC 50-60 Hz Un [V] Max. continuous operating voltage (L-N) Uc [V] 275 Min. continuous operating voltage (L-N) Uc [V] 195 Max. continuous operating voltage (N-PE) Uc [V] 265 Imax [ kA] 40 Nominal discharge current (8/20) In [kA] 20 Voltage protection level (L-N) at In UP [kV] ≤ 1,3 Voltage protection level (N-PE) at In UP [kV] ≤ 1,5 Maximum back-up fuse [A gL] 125 Short circuit withstand Icc [kA] 25 Response time (L-N) tA [ns] 25 Response time (N-PE) tA [ns] 100 Following current (N-PE) Ifi [A] 100 Maximum