Applicable to400VElectricity monitoring and fault detection of the line. Installed in low-voltage distribution network box type substations, residential distribution rooms, column mounted transformers, etc. by phase400VOn branch lines, achieve low voltage400VThe monitoring of branch line operation status and indication of line fault status, measuring information such as current, voltage, cable temperature, etc., and calculating active and reactive power. Equipped with an independent fault current transformer, it monitors line faults and alarms. The main feature of SCPB-ILTU-SP type is that information transmission is based on HPLC power carrier communication. Compared with traditional equipment, this type of equipment eliminates power and communication lines, simplifies installation, and simplifies wiring in distribution boxes. It can also be installed and used in situations without 24V DC power supply, and has a wider range of applications.

1 Main functional features

2.1 Integrated, low-power, power line carrier communication with high reliability and adaptability.

2.2 Simultaneously meet the regulatory and safety requirements for indoor and outdoor on-site installation.

2.3 Adopting a retractable structure and equipped with locking components, it is easy to install and firm.

2.4 Made using thermosetting resin materials through casting and curing processes, the iron core opening is sealed with a thermosetting outdoor silicone rubber sealing ring, which is waterproof and dustproof.

2.5 Capable of measuring the load current and phase voltage of the circuit, and calculating the phase active power and phase reactive power.

2.6 Using a Roche coil as a protective current transformer, through an integratorA/DConversion and calculation processing can quickly respond to the fault current of the line and achieve the function of line fault detection.

2.7 Equipped with phase fault indication function, the fundamental component of the protective current is used as the input for fault discrimination. After the fault indication action, the state is maintained until it returns.

2.8 Having pressure on each other/Non pressure detection function.

2.9 Equipped with temperature detection function

2.10 The communication method adopts high-speed power line carrier (HPLC),ModbusCommunication protocol.

2.11 have64Device identifier.

2.12 It has the function of setting parameters such as channel coefficient and phase fault indication action value.

2.13 Interface and Instructions

a) Phase voltage and ground input interface;

b) Indicator lights: Running status and phase fault status indication:

c) Button: Operation mode and fault indication reset button.

2 Technical Specifications

3.1rated parameters

3.1.1Analog input

a) Rated voltageAC220V：

b) Rated protection current:400A：

c) Rated measuring current: 600A：

d) rated frequency50Hz.

3.1. 2 Power consumption

a) AC voltage circuit: At rated input, the power consumption of each circuit is less than2VA.

3.2 measurement accuracy

a) Current and voltage errors: ≤ 0.5%, measurement range 0-120%;

b) Active and reactive power errors: ≤ 1.0%, measurement range 0-120%;

c) Measurement error of protective current: ≤ 8%, measurement range 0-10In;

d) Temperature measurement error: ≤ 2 ℃, measurement range -40~70 ℃.