First, the installation method of power line surge protector
(1) Surge protectors for power lines at all levels shall be installed at the entrance of lines into buildings, at the interface of lightning protection belts and near the protected equipment. The connecting wires of surge protectors at all levels shall be short and straight, with a length not exceeding 0.5m, and shall be firmly fixed. Each terminal of the surge protector shall be connected with the same terminal of the line in the pile head distribution box under the switch and fuse of the same level, and the grounding terminal of the surge protector shall be connected with the equipotential grounding terminal board in the lightning protection area in the shortest distance. The protective ground wire of the distribution box is directly connected with the equipotential grounding terminal board.
(2) The terminal of power line surge protector should be crimped; Surge protectors with terminals should be connected to the terminals.
(3) The minimum cross-sectional area of the surge protector connecting wire is as follows:
Second, the antenna feeder surge protector installation method
(1) The surge protector of the feeder shall be installed between the feeder and the protected equipment. It should be installed near the equipment in the machine room or on the rack, or directly on the RF port of the equipment.
(2) The grounding terminal of feeder surge protector should be connected to the equipotential grounding terminal board at the connection of lpz0a or lpzob and lpz 1 with a copper conductor with a cross-sectional area of not less than 6mm2, and the grounding wire should be short and straight.
Three. Installation method of signal line surge protector
(1) The signal line surge protector shall be connected to the signal port of the protected equipment. Surge protectors (SPD) can be installed in cabinets or fixed on equipment racks or nearby brackets.
(2) The grounding terminal of the signal line surge protector should be short and straight, and the cross-sectional area should not be less than1.5m2. ..
Extended data:
Function:
1. Lightning discharge may occur between or inside clouds, or between clouds and the ground; In addition, the influence of internal surge caused by the use of many large-capacity electrical equipment on power supply system (China low-voltage power supply system standard: AC 50Hz 220/380V) and electrical equipment, and the protection against lightning and surge have become the focus of attention.
2. The lightning discharge between the cloud and the ground is composed of one or more individual lightning, and each lightning carries many currents with high amplitude and short duration. A typical lightning discharge consists of two or three lightning strikes with an interval of about one twentieth of a second. Most lightning currents range from 10000 to 100000 amps, and their duration is usually less than 100 microseconds. Three. Due to the use of large-capacity equipment and frequency conversion equipment, the internal surge of power supply system is becoming more and more serious.
3. Due to the use of large-capacity equipment and frequency conversion equipment, the surge phenomenon in power supply system is becoming more and more serious. We attribute it to the influence of transient overvoltage (TVS). Any electrical equipment has an allowable power supply voltage range. Sometimes, even a narrow overvoltage pulse can cause complete damage to the power supply or equipment. This is the failure mode of transient overvoltage (TVS). Especially for some sensitive microelectronic devices, sometimes a small surge will cause fatal damage.