Introduction

FHXL-63 series is the current-limiting fire alarm protector（current limiting protector）, and it is a comprehensive protector with multiple protection functions for overvoltage, undervoltage, overcurrent, leakage, temperature and smoke detection. The product has the advantages of modularization, intelligence, visualization and so on. At the same time, it supports the standard Modbus485 communication

protocol. All protection parameters such as overvoltage, undervoltage and overcurrent protection can be set according to the power demand, so as to ensure that the protector can instantly cut off the power supply when overvoltage, undervoltage, overcurrent and other faults occur in the line, and the electrical equipment can be protected from damage.

The product has compact structure, beautiful appearance, and there is standard guide rail for installation.

Current protection parameters

Type	JGXL-63/3P+N
Current specifications	63A(1~63A)
Overvoltage setting range	AC270V(210~300V)
Range of undervoltage setting	AC170V(80~200V)
Working voltage	AC230V/400V

Product functional features

■ Smoke and combustible gas protection function: When the smoke, liquefied petroleum gas, natural gas, propane, butane and other combustible gases in the electric field exceed the limit, the protector will emit an audible and visual alarm signal, automatically cut off the power supply, and display real-time fault records.
Short circuit protection function: The protector monitors the current of the power line in real time. When a short circuit fault occurs in the line, it can achieve fast current limiting protection within 0.1 seconds and display real-time fault records.

■ Overload protection function: When the current of the protected circuit is overloaded and the overload duration exceeds the action time (3-60 seconds can be set), the protector starts current limiting protection and displays real-time fault records.
Overvoltage protection function: When the protector detects under voltage or over-voltage in the line, it automatically cuts off the power supply and displays real-time fault records.

■ Distribution cable temperature monitoring function: When the temperature of the monitored cable exceeds the alarm set value, the protector automatically cuts off the power supply and displays real-time fault records.

■ Leakage current monitoring function: When the leakage of the monitored line exceeds the alarm set value, the protector automatically protects and cuts off the power supply, and displays the fault record in real time.

■ Communication networking function: The protector has one RS485 interface, which can send data to the background monitoring system, realizing the five remote functions of remote telemetry, remote signaling, remote control, remote adjustment, and remote viewing.

■ Simultaneous cutting of neutral and live wires: When a fault occurs in the circuit, the product cuts off both the neutral and live wires simultaneously, without the danger of live wires on the circuit due to the failure of the neutral wire to be cut off.

Overvoltage does not damage: When the three-phase power supply is misconnected, the maximum power supply voltage is at AC450V, and the product will disconnect within the set time, while the ground product itself will not be damaged due to high voltage.
Anti harmonic: Currently, the electricity consumption in the power grid is relatively complex, with a large number of harmonics present. Harmonic hazards can shorten the lifespan of other electrical equipment, but this product is not affected in harmonic power grids.
One click recovery function: When users are not proficient in product operation and cannot meet on-site protection requirements for parameter settings, they can easily restore the factory settings to avoid erroneous protection issues caused by improper operation.

Working conditions

1. In case of the first normal power-on, the device automatically closes after 1s delay; and when powered on for the first time, under the conditions of overvoltage, undervoltage, overcurrent and leakage, the device will automatically open within 3 seconds;

2. When powered on for the first time, the smoke sensor needs to be heated for 60 seconds, and then the product enters the protection state. After smoke alarm occurs and the fault is removed, it is necessary to manually press the Reset key for 2 seconds, then the smoke alarm can be released.

3. Current protection parameters:

a. ≥ 1.05 times current, < 3 minutes opening.

b. ≥ 1.2 times current, setting range 1 to 120 seconds, 10 seconds by default

c. ≥ 2 times current, ≤0.2 second opening.

4. The ambient temperature shall not exceed + 40°C, it shall not be lower than-5°C; and the average temperature within 24 hours shall not exceed + 35°C; at + 40°C, the ambient air humidity shall not exceed 50%.

5. The altitude of the installation site shall not exceed 2000 meters.

6. Pollution level: III.

7. In the installation environment, there shall be no explosive dangerous medium, no corrosive and destructive gas and conductive dust, and no invasion of rain and snow.

current-limiting fire alarm protector is Functions of the keys

1. Setting key: Press and hold the Setting key for 2 seconds, it enters the setting state. After entering the setting state, every time you press the key, the system will enter the next setting menu;

2. Shift key: query the current real-time operation parameters of the product. In the setting state, it has the digit shift function;

3. Data key: query the last fault information of the product and change the parameters to be set under the setting state;

4. Reset key: When the first overcurrent or leakage occurs, the product will automatically switch on after delaying the specified reset time. When the second overcurrent, leakage or fire alarm occurs, it must be confirmed that there is no fault in the circuit, then you need to manually press the Reset key to make the product switch on, and press the Reset key for 2 seconds to save and exit the setting state.