Created by: Glen Zhu | Updated Date: September 11th, 2024
Installing a three-phase surge protection device (SPD) requires careful attention to safety standards, the type of installation, and the correct wiring process. Here’s a step-by-step guide for installation:
3 phase surge protection device Wiring Diagram & installation
1. Turn Off Power
2. Identify the Connection Points
3. Install Circuit Protection (Optional)
4. Mount the 3 Phase Surge Protection Device
5. Connect the 3 Phase Surge Protection Device to the Panel
3 Phase Surge Protector wiring diagram Installation
Wiring Diagram for Green Light on a FLP25-275/3S+1
Wiring Diagram for Red Light on FLP25-275/3S+1
Tip: Keep all connecting wires as short and direct as possible to reduce impedance and improve protection.
6. Test the Installation
7. Label the Installation
Following these steps will ensure that the 3-phase SPD is installed correctly and effectively protects against overvoltage or transient surges.
Type 1 Three Phase Surge Protection Device (SPD) are heavy-duty devices designed to be installed at the origin of AC installations equipped with a Lightning Protection System (LPS).
AC Type 1 Three Phase Surge Protector Device (SPD) is characterized by a 10/350 µs lightning current waveform.
DIN-Rail AC Type 1 Three Surge Protector Devcie installed at the load center’s main circuit breaker, e.g. main distribution board.
FLP12,5-275/3S+1 for 3 Phase Energy Meter Connection Wiring Diagram Installation
FLP7-275/3S+1 for 3 Phase Energy Meter Connection Wiring Diagram Installation
SLP40-275/3S+1 for 3 Phase Energy Meter Connection Wiring Diagram Installation
SLP20-275/3S+1 for 3 Phase Energy Meter Connection Wiring Diagram Installation
An AC Three Phase Surge Protector Device with remote signaling terminals is designed for remote monitoring and management.
These terminals facilitate real-time monitoring of the SPD’s operational status, provide alerts in case of faults, and enhance system safety by enabling quick response to issues.
Wiring Diagram for Green Light on a FLP25-275/3S
Wiring Diagram for Red Light on FLP25-275/3S
Wiring Diagram for Green Light on a FLP25-275/4S
Wiring Diagram for Red Light on a FLP25-275/4S
3 phase surge protector is usually used in a three-phase network.
For example:
In practical applications, the wiring of a three-phase surge protection device should follow these basic principles:
4. Clearance and Creepage Distance: When installing a three-phase surge protector, it is important to consider clearance and creepage distance to ensure the safety and reliability of the device under different operating conditions.
The wiring method of a three-phase surge protector varies depending on the power system and equipment. Here are some common wiring methods:
1. Wiring Method in TN Systems
In TN systems, three-phase surge protectors are typically installed at the power supply entry point to protect downstream equipment. The specific wiring methods are as follows:
Three-Phase Four-Wire System (TN-C System): The surge protector is connected to the L1, L2, L3 phase lines and the PEN line, protecting the voltage between the three-phase lines and the PEN line.
Three-Phase Five-Wire System (TN-S System): The surge protector is connected to the L1, L2, L3 phase lines, the N line, and the PE line, protecting the voltage between the three-phase lines and the neutral line (N line), as well as between the phase lines and the protective earth line (PE line).
2. Wiring Method in TT Systems
In TT systems, the surge protector mainly protects the voltage between the phase lines and the neutral line. The ground terminal of the surge protector is usually connected to an independent grounding device to ensure that surge currents can be quickly discharged.
3. Wiring Method in IT Systems
Wiring surge protectors in IT systems requires special attention. Since the neutral point in an IT system is either not grounded or grounded through high impedance, the surge protector is typically installed between the phase lines and the ground line to protect the equipment on the phase lines.
LSP’s reliable surge protection devices (SPDs) are designed to meet the protection needs of installations against lightning and surges. Contact our Experts!
Copyright © 2010-2024 Wenzhou Arrester Electric Co., Ltd. All Rights Reserved. Privacy Policy
