To choose the best technology for surge protective devices, we should consider the following technical parameters (include but not limited to):
1. Type of surge protective devices according to EN61643-11/IEC 61643-11
2. Nominal Voltage (Un)
3. Maximum Continuous Operating Voltage (Uc) /Maximum Continuous Operating Voltage for PV System (Ucpv)
4. Voltage Protection Level (Up)
5. Nominal Discharge Current (In)
6. Maximum Discharge Current (Imax)
In an electrical systems, SPDs are usually installed in tap-off configuration (in parallel) between the live conductors and the earth. The operating principle of SPD can be similar to that of a circuit breaker. In normal use (no overvoltage): the SPD is similar to an open circuit breaker. When there is an overvoltage: the SPD […]
GENERAL INFORMATION l Single-pole/ Two-pole/ Three pole/ Four pole varistor surge protective device (AC SPD) l Visual indication and optional remote contact signaling(S). l The Prewired complete unit consisting of a base part and replaceable plug-in protection modules. l Installation at the boundary of zones LPZ1 and LPZ2. l The Modular surge arrester for use in AC or DC PV system. l DIN […]
SPDis an indispensable device in the lightning protection of electronic equipment. Its function is to limit the instantaneous overvoltage entering the power line and signal transmission line within the voltage range that the equipment or system can withstand, or to discharge the strong lightning current into the ground. , to protect the protected equipment or […]
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