Main Functions and Features
◆ High-performance 32-bit ARM microprocessor is used to carry out signal processing and intelligent control
in real time;
◆ LCD Chinese/English display provides friendly HMI and simple operation;
◆ Long delay, short delay and instantaneous three-stage protection, electronic tripping mode is applied, which is independent of supply voltage;
◆ High breaking ability could ensure the reliability of short circuit protection for the line;
◆ Overvoltage protection, undervoltage protection, AND phase loss protection: Protection functions and parameters can be set and modified online;
◆ Real-time display of three-phase supply voltage and load current; Real-time measurement of parameters such as active power, reactive power, apparent power & power factor;
◆ Trip types (overload, undervoltage, overvoltage, phase loss) can be identified & displayed, and can be stored, inquired & deleted;
◆ In current fault protection, the fault reasons can be stored and reported;
◆ Detailed real-time information of load can be queried: current, voltage and phase loss;
◆ It integrates comprehensive electrical protection of short circuit, overload, overvoltage and undervoltage, and phase loss;
◆ Built-in communication function: Remote communication, telemetry, remote control and remote adjustment could be achieved;
◆ Functions of remote communication, telemetry, remote control and remote adjustment are supported;
◆ HPLC pluggable module;
◆ 0.05ln-1.2ln measurement can reach level 0.5;
◆ Real-time measurement of parameters such as active power, reactive power, apparent power & power factor;
◆ Accumulation of three-phase active power;
◆ Support DL/T645 protocol and Modbus protocol, and automatic identification is achieved;
◆ Real-time monitoring of the temperature of the incoming connector bar (optional);
◆ Support online remote upgrade, which is convenient for maintenance and upgrade;
◆ Accuracy grade: The highest accuracy of current and voltage can reach 0.5s; The accuracy of active and reactive power can reach level 1;
◆ Automatic meter search and reading function, and analysis of the power loss in the meter box are supported;
◆ Support customized power item reading, support object-oriented power consumption information data exchange protocol-Power Internet of Things Supplement supports active reporting of HPLC events and active reporting of displacement information;
◆ Support data encryption.
Operating and Installation Conditions
◆ Ambient temperature: -5℃~+40℃, and the average value does not exceed + 35℃ within 24 hours;
◆ Altitude: ≤ 2000m;
◆ Relative humidity of air: ≤ 95%;
◆ Installation category: III;
◆ Pollution level: 3;
◆ Installation mode: Horizontal or vertical;
◆ Installation conditions: The external magnetic field shall not exceed 5 times of the geomagnetic field in any direction.
Model | CBRM5E-125,250 | CBRM5E-400 | CBRM5E-630 | ||||
Shell current Inm(A) | 125,250 | 400 | 630 | ||||
Rated current In | 125,250 | 400 | 630 | ||||
Overload long delay setting current Ir1 (A) | 63,65,70,75,80,85,90,95,100, 125,140,160,180,200,225,250 | 160,180,200,225,250,280, 315,350,375,400 | 250,280,315,350,375,400, 450,500,560,630 | ||||
Rated working voltage Ue(V) | AC400 | ||||||
Rated insulation voltage Ui(V) | 1000 | ||||||
Rated impulse withstand voltage Uimp(kV) | 8 | ||||||
No. of poles | 3 | ||||||
Breaking ability level | L | M | L | M | L | M | |
Rated limit short circuit breaking capacity IcU(kA) |
36 |
50 |
50 |
70 |
50 |
70 | |
Rated short circuit breaking capacity Ics(kA) |
25 |
36 |
50 |
70 |
50 |
70 | |
Rated short-time withstand current Icw(kA)/s | 3 | 5 | 8 | ||||
Utilization category | A | B | |||||
Flashing distance (mm) | 50 | 100 | |||||
Operational performance (times) | Powered | 1000 | 1000 | ||||
Not powered | 7000 | 4000 | |||||
Total | 8000 | 5000 |