First, let's have Liangdike Electronics, a professional manufacturer of LED switching power supplies, introduce itself.

1. How to select an LED switching power supply:

To ensure the safe use of LED switching power supplies, products with short-circuit, overload protection, and flame-retardant functions should be selected first.

During the use of LED switching power supplies, incidents of fire due to short circuits or damage due to overload are common.

Short-circuit protection requires the power supply to be cut off very quickly after a short-circuit fault occurs, protecting the load from the impact of large current surges and effectively protecting the LED switching power supply.

Overload protection requires the LED switching power supply to trip instantaneously in response to short-term overload surge currents or short-circuit currents, protecting the LED switching power supply.

In addition to selecting LED switching power supplies with short-circuit and overload protection functions, flame-retardant functionality is another important layer of protection for power supply safety.

2. Precautions for use:

Do not modify, disassemble, or remove the power supply. Please contact our customer service immediately if necessary. Do not touch the electronic components on the product while it is powered on, as this may result in electric shock or other injuries.

Disconnect the power supply before connecting any power input or output.

Before powering on, please check that the input and output lines are connected correctly; ensure that there are no short circuits or reverse connections in the input and output; and confirm that the input voltage is consistent with the product's nominal value.

To ensure safety and minimize electromagnetic interference, please ensure that the product's grounding terminal is reliably grounded.

When using this product in areas prone to strong lightning strikes or in buildings with inadequate lightning protection measures in the field, please install lightning protection equipment on the input side.

Power supply recommendations for installation and use: The total power output during a single startup should not be too high. Each phase should generally not exceed 10KW of load power, and the specific output should match the load capacity of the transformer. The three phases must be balanced, and startup should be phased with delayed starts. This is to prevent excessive AC surge waves during high-power startup, which could lead to grid instability.

If the power supply system has power factor requirements for equipment connected to the grid, power supply products with PFC function should be selected to reduce interference to other equipment. This can reduce phase and neutral currents, with a particularly significant reduction in neutral current. If there are power limits for the input transformer, products with PFC function can be selected to improve the transformer's load capacity without increasing the input transformer power.

In low-temperature environments, a low-temperature power supply must be selected. The minimum operating temperature of a conventional power supply is -30℃. When the temperature is below -30℃, a low-temperature power supply must be selected, which has a temperature of -40℃.