Telecommunication Surge Protection
Power distribution systems are the core electrical infrastructure in buildings, factories, commercial facilities and industrial sites. Surges may enter through incoming power lines, switching operations, inductive loads or nearby lightning activity. Without proper protection, electrical equipment may suffer insulation breakdown, control failure or unexpected shutdown. A layered surge protection design is recommended for low-voltage distribution systems, including main distribution protection, sub-distribution protection and terminal equipment protection.
AC main power input for the equipment room
Base stations face a high risk of direct lightning strikes
AC Power SPD->Type 1 / Class l
Uc:
AC385V/420V/440V
Iimp (10/350 μs):
25kA
In (8/20 μs):
60kA
Imax(8/20 μs):
100kA
Mode of Protection:
L/N-PE; L-N, N-PEReference Standards:
IEC 61643-11OEM/ODM Acceptable
Additional Function:
Thermal Tripping Protection, Status Indicator, and Remote Signaling48V DC power supply/rectifier cabinet
prioritizing primary AC protection is essential.
DC Power SPD
Un(V):
DC12/24/48/120/220/380/750/1000
Uc(V):
DC15/30/60/175/275/505/1060/1200
In (8/20 μs):
20kA
Imax(8/20 μs):
40kA
Mode of Protection:
L/N-PE; L-N, N-PEReference Standards:
IEC 61643-11OEM/ODM Acceptable
Additional Function:
Thermal Tripping Protection, Status Indicator, and Remote SignalingBattery bank/DC power distribution cabinet
Protects the DC busbar, rectifier output, and communication power supply.
DC Power SPD
Un(V):
DC12/24/48/120/220/380/750/1000
Uc(V):
DC15/30/60/175/275/505/1060/1200
In (8/20 μs):
20kA
Imax(8/20 μs):
40kA
Mode of Protection:
L/N-PE; L-N, N-PEReference Standards:
IEC 61643-11OEM/ODM Acceptable
Additional Function:
Thermal Tripping Protection, Status Indicator, and Remote SignalingTransmission equipment/Network switch ports
Protects Ethernet ports on transmission, routing, and switching equipment.
Signal & Data SPD
Uc(V) :
8V
Un(V) :
5V
In (8/20 μs):
10kA
Imax(8/20 μs):
20kA
Reference Standards:
IEC 61643-21OEM/ODM Acceptable
Additional Function:
Thermal Tripping Protection, Status Indicator, and Remote SignalingSolutions
Different systems require different SPD types, voltage levels, wiring structures and installation positions. Select your application scenario to view the recommended protection strategy.FAQ
Is grounding important for telecom SPD?
Yes. Grounding is critical. Telecom SPD must be connected to a reliable grounding system to discharge surge energy effectively.
Can telecom SPD protect outdoor communication equipment?
Yes. Properly selected telecom SPD can help protect outdoor communication equipment, remote monitoring devices, base stations, and network infrastructure.
What information is needed to select telecom SPD?
You need to confirm whether the protected line is power, signal, Ethernet, coaxial, or telecom communication line. Voltage, connector type, frequency, transmission rate, and installation position are also important.
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.
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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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