Lightning surge currents generated in low-voltage distribution systems and data transmission network will produce over-voltage, ABB OVR complete series surge protector can secure the lightning current into the ground and limit overvoltage. OVR has a compact and simple wiring advantages of modular design with a safety margin OVR protection, working status indicator and remote signaling contacts, allowing users to get a more reliable protection ABB OVR surge protector comprises OVR T1 OVR T1 + 2 OVR BT2 OVR TC and OVR Telecom (communications) OVR PV (photovoltaic) OVR WT (wind) and other products can be widely used in construction, transmission and distribution, industrial, communications, new energy, and transportation. Type 1 surge protector (OVR T1) is usually installed in the mains power switch impose direct lightning discharge energy, which is the supply line of the first-level protection. The surge protector can effectively protect the connected device within 10 meters, so you must use one or more of the surge protector, to protect the device withstand voltage level. Type 1 + 2 surge protector (OVR T1 + 2) Type1 + 2 surge protector is the primary and secondary SPD combination matches the SPD, for the discharge of high energy generated by direct lightning strike, while ensuring that the majority of lower voltage levels safe operation of electrical and electronic equipment, used in residential, commercial and industrial. Type 2 surge protector (OVR T2) and Type1 surge protector used in conjunction with, applied to the second-level protection. Plug-in, the maximum discharge current of 10,20,40,70 (or 65), 100 and 120kA (8/20 Cheng ochs) pluggable OVR simply replace the old core can continue to operate, saving maintenance time and When the cost of security to play a reserve system (res) in surge protector in the standby state protection PV-specific surge protector (OVR PV) designed specifically for photovoltaic applications, plug-in structure, high rated voltage to 600 / 1000VDC. Surge protection (OVR WT / OVR BT2 660/690) rated up to 600 / 690VAC, and a high level of resistance to the open circuit voltage, widely used in wind power generation and other industries. Communications-specific surge protector (OVR Telecom) specifically developed for the communications industry applications, plug-in structure, the maximum continuous operating voltage 385V. Data Surge protection (OVR TC) lightning risk not only in the power system, but also in other ancillary network communications and data transmission should be used in special surge protector (OVR TC) series in the network, to provide adequate protection .