FAQ
What is a telecom surge protective device?
A telecom surge protective device protects telecom power lines, data lines, antenna systems, and communication equipment from transient overvoltage.
Can CRESIN provide surge protection for base stations?
Yes. CRESIN can provide surge protection products for base station power systems, communication lines, antenna systems, and equipment cabinets.
What information is needed for telecom SPD selection?
You need to confirm the line type, working voltage, connector type, signal frequency, transmission rate, installation position, and grounding condition.
Does telecom SPD affect signal transmission?
A properly selected telecom SPD should match the frequency, connector type, impedance, and transmission requirements of the system, so it should not significantly affect normal communication.
Where should telecom SPD be installed?
Telecom SPD is commonly installed at cable entry points, communication cabinets, base stations, equipment rooms, antenna systems, and DC power distribution panels.
What parts of a telecom system need surge protection?
Surge protection may be required for DC power supply lines, AC input lines, signal lines, Ethernet cables, coaxial cables, antenna feeders, and communication equipment.
Why do telecom systems need surge protection?
Telecom systems often include outdoor antennas, towers, long cables, remote cabinets, and sensitive communication equipment. These systems are vulnerable to lightning-induced surges and ground potential differences.
Can CRESIN provide SPD for industrial distribution panels?
Yes. CRESIN can provide AC SPD products for main distribution panels, sub-panels, control cabinets, industrial machinery, and building electrical systems.
Is grounding necessary for distribution SPD?
Yes. A reliable grounding system is necessary for SPD to safely discharge surge energy and provide effective protection.
How do I choose SPD for a distribution cabinet?
You need to confirm the system voltage, grounding system, number of phases, installation position, required discharge current, and protection level.
What is coordinated surge protection?
Coordinated surge protection means using different SPD levels at different installation points, such as Type 1 at the main incoming side, Type 2 at sub-distribution boards, and then step-by-step coordination enables the gradual release of electrical energy.
Where should SPD be installed in a distribution system?
SPD is commonly installed at the main distribution board, sub-distribution board, control cabinet, machinery panel, and near sensitive electrical equipment.
Why do power distribution systems need surge protection?
Power distribution systems can be affected by lightning surges, switching operations, grid disturbances, and transient overvoltage. SPD helps protect downstream electrical equipment and reduce failure risk.
What information is needed to select SPD for EV charging stations?
You need to provide the power supply voltage and charging station layout because the charging station SPD is mainly installed in the distribution cabinet.
Can surge protection reduce EV charger failure rate?
Proper surge protection can help reduce damage caused by transient overvoltage and improve the reliability of charging equipment, especially in outdoor or lightning-prone areas.
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The product range includes production technologies for smart capacitors, digital display meters, surge protectors, dedicated backup protection devices for surge protectors, self-resetting over/under-voltage protectors, control and protection switches, and automatic transfer switches for dual power supplies.
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