Scope of Application
The rated insulation voltage of series residual current operated circuit breaker is 1000V, which is suitable for three-phase four-wire neutral point direct grounding (TT) distribution networks with 50Hz AC, 400V rated voltage and 800A rated current. It is used to provide indirect contact protection; Prevent fire danger caused by grounding fault current due to equipment insulation damage; And it can be used to distribute electric energy and it can also be used to distribute electric energy and protect lines and power supply equipment from overload, undervoltage, short circuit, single-phase grounding and other faults.
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;
For residual current (leakage) protection, the residual current gear can be set online, with reclosing function;
Monitor and track the residual current of the line in real time, and automatically adjust the gear to ensure the operation rate and reliability of the product;
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, phase loss protection;
Real-time display of residual current, three-phase supply voltage and load current of the line;
Protection functions and parameters can be set and modified online;
Trip types (residual current, locking, overload, undervoltage, overvoltage, phase loss) can be identified & displayed, and can be stored, inquired & deleted;
Network type has communication function, which can realize remote communication, telemetry, remote control and remote adjustment.
Pluggable lightning protection module (optional)
Infrared communication function (optional)
Specification/Model | CBRM3EL-125CY CBRM3EL-125CS | CBRM3EL-250CY CBRM3EL-250CS | CBRM3EL-400CY CBRM3EL-400CS | CBRM3EL-630CY CBRM3EL-630CS | CBRM3EL-800CY CBRM3EL-800CS | |
Shell grade rated current (A) | 125 | 250 | 400 | 630 | 800 | |
No. of poles | 3P+N | 3P+N,2P | 3P+N | 3P+N | 3P+N | |
Rated operating voltage Ue: (V) | AC 400/50HZ | |||||
Rated insulation voltage Ui (V) | 1000 | |||||
Rated impact withstand voltage (V) | 8000 | |||||
Flashing distance (mm) | ≯50 | ≯100 | ||||
Limit short circuit breaking capacity Icu (kA) | 50 | 65 | 65 | |||
Operating short circuit breaking capacity Ics (kA) | 36 | 50 | 50 | |||
Rated residual short circuit on (off) capacity I△m (kA) | 12.5 17.5 (H) | 16.25 (H 21.5) | 16.25 | |||
Rated short-time withstand current Icw (kA)/S | 1.5 | 3 | 5 | 8 | 10 | |
Residual current operating features | AC type | |||||
Rated residual operating current I△n (mA) | 50/100/200/300/400/500/600/800 MCU automatic tracking or manual setting | 100/200/300/400/500/600/800/1000 MCU automatic tracking or manual setting | ||||
Residual operating time features | Delayed/non-delayed type | |||||
Limit non-drive time of delayed type (s) | 0.06/0.1/0.2 Optional: 2I△n | |||||
Breaking time (s) | I△n≤0.5; 2I△n≤0.2; 5I△n≤0.15 | |||||
Auto re-closing time (s) | 20-60 | |||||
Operational performance (times) | Powered | 1500 | 1000 | 1000 | 500 | |
Not powered | 8500 | 7000 | 4000 | 2500 | ||
Total | 10000 | 8000 | 5000 | 3000 | ||
Overload and short circuit features | Three-stage protection, electronically adjustable, see "Description of Protection features" for details | |||||
Overvoltage protection value (V) | Setting value (250~300)±5% | |||||
Undervoltage protection value (V) | Setting value (145~200)±5% | |||||
Link control delay time (ms) | ≤40MS | |||||
Communication delay time (ms) | ≤200MS | |||||
