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CBRM3EL Automatic Reclosing Circuit Breaker with Residual Current Protection(MCCB)
CBRM3EL Leakage Circuit Breaker
Product Model and Meaning
Meets Standards
The product meets the following standards:
GB/T14048.1-2012 Low voltage switchgear and control equipment Part 1: General principles;
GB/T14048.2-2008 Low-voltage switchgear and control equipment Part 2: Circuit breakers;
GB/T17701-2008 <Equipment circuit breakers>.
Main Functions and Features
Adopt high-performance 32-bit ARM microprocessor, real-time signal processing and intelligent control;
LCD Chinese display, user-friendly interface, easy operation;
The residual current (leakage current) protection can be adjusted online, and has the function of reclosing;
Real-time monitoring and tracking of the residual current of the line, automatic adjustment of the range, to ensure the operation rate and reliability of the product;
Three-stage protection, long delay, short delay and instantaneous, using electronic trip, independent of power supply voltage;
High breaking capacity to ensure the reliability of line short circuit protection;
Over-voltage protection, under-voltage protection, phase loss protection;
The residual current of the line, the three-phase power supply voltage and the load current are displayed in real time;
Protective functions and parameters can be set and modified online.
Trip types (residual current, lockout, overload, under-voltage, over-voltage, phase loss) are identified and displayed, and can be stored, queried, and deleted.
The network type has communication functions, which can realize remote signaling, remote measurement, remote control and remote adjustment.
Plug-and-play lightning protection module (optional)
Supports infrared communication (optional)
Key Technical Specifications
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Specifications and models |
CBRV3F-125CY |
CBRM3FI.-250CY |
CBRM3EI.-400CY |
CBRV3EL-630CY |
CBRM3EL 800CY |
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Rated current of the shell frame class (A) |
125 |
250 |
400 |
630 |
800 |
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Number of poles |
3P+N |
3P+N |
3P+N |
3P+N |
3P+N |
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Rated working voltage Ue (V) |
AC 400/50HZ |
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Rated insulation voltage Ui (V) |
1000 |
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Rated impulse withstand voltage Uimp (V) |
8000 |
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Flash-over distance(mm) |
<=50 |
<=100 |
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Maximum short-circuit breaking capacity (lcu, kA) |
50 (H-type 70) |
65 (H-type 85) |
85 |
65 |
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Operating short-circuit breaking capacity (lcs, kA) |
35 (H-type 50) |
42 (H-type 65) |
65 |
42 |
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Rated residual short-circuit breaking capacity I△m (kA) |
12.5 (H-type 17.5) |
16.25 (H-type 21.5) |
16.25 |
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Rated short-time current Icw (kA)is |
1.5 |
3 |
5 |
8 |
10 |
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RCD trip characteristics |
AC type |
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Rated residual operating current I△n (mA) |
50/100/200/300/400/500/600/800(MCU auto-tracking or manual setting) |
100/200/300/400/500/600/800/1000 |
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Residual Operating Time Characteristic |
Time delay type / Non-time-delay type |
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Delay-type limit non-drive time (s) |
0.06/0.1/0.2 Optional:21△n |
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Break-time (s) |
I△≤0.5;2I△n≤0.2;51△n≤0.15 |
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Automatic reclosing time (s) |
20-60 |
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Operation performance (times) |
Set up an electric circuit |
1500 |
1000 |
1000 |
500 |
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No power |
8500 |
7000 |
4000 |
2500 |
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Total |
10000 |
8000 |
5000 |
3000 |
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Overload and short-circuit characteristics |
Three-stage protection with electronic adjustment. See "Protection Characteristics" for details. |
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Over-voltage protection value (V) |
Set value(250~300)±5% |
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Under-voltage protection value (V) |
Set value (14S--200)±5% |
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Control delay time (ms) |
≤40ms |
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Communication delay (ms) |
≤200ms |
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Protection Feature Description
◆Overload and long delay protection
Action value range
Table 1:Overload Long Delay Parameter Settings
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Parameter |
Shroud current |
Set value |
Factory set value |
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Action set-point Irl |
125 |
50A、63A、80A、100A、125A |
125A |
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250 |
100A、125A、140A、160A、180A、200A、225A、250A |
250A |
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400 |
160A、180A、200A、225A、250A、315A、350A、400A |
400A |
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630 |
250A、315A、350A、400A、500A、630A |
630A |
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800 |
315A、350A、400A、500A、630A、700A、800A |
800A |
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Delay time setting value tL |
3s,4s,6s,8s,10s,12s,16s,18s,OFF |
12s |
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◆performance characteristic
Table 2:Protection Action Characteristics
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Ambient temperature |
Current name |
Set current multiplier |
Appointed time |
|
+40℃ |
Conventional non tripping current |
1.05Ir1 |
≥2h |
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Conventional tripping current |
1. 3Ir1 |
<2h |
◆time-delay characteristics
The overload protection is based on the inverse time characteristic .
The delay time T is calculated as (6rll, with a tolerance oft10%.Here,T represents the action time Irl is he long delay protection setting,I denotes the fault current. And tL is the long delay time setting.
◆Short circuit short delay protection
Short delay protection prevents impedance short circuit in the distribution system, and the trip delay is to achieve selective protection.
Short-circuit short delay protection parameter settings
Table 3: Short-circuit delay parameter setting
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Parameter setting |
Set value |
Factory set value |
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Short delay action current setting lr2 |
2Ir1,2.5lr1,3lr1,4lr1,5lr1,6lr1,7lrl,8lrl,10lr1,121r1 |
6lr1 |
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Short delay time setting value ts |
0.1s,0.2s,0.3s,0.4s,0.6s,0.8s,1.0s,OFF |
0.4s |
Short-circuit short delay protection action characteristics
Table 4:Short Delay Action Characteristics of Short Circuit
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Characteristic |
Fault current multiple |
Trip characteristics |
Delay error |
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No action feature |
≤0.85 Ir2 |
Failure to actuate |
/ |
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Performance characteristic |
>1.15Ir2 |
Deferred action |
±40ms |
◆Instant Protection
Set parameters for instantaneous short-circuit protection
Table 5: Instantaneous parameter setting
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Parameter setting |
Set value |
Factory set value |
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Instantaneous action current setting lr3 |
4 Irl,6 Irl,7 Irl,8 Irl, 10 Irl,11 Ir1,12 Irl,13 rl,14 rl,0FF |
10 Ir1 |
Short-circuit instantaneous protection action characteristics
Table 6:Instantaneous motion characteristics
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Characteristic |
Current ratio (I/r3) |
Trip characteristics |
Trip time |
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No action feature |
≤0.85 |
Failure to actuate |
≥200ms |
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Performance characteristic |
>1.15 |
Instantaneous operation |
<200ms |
Setting range for residual current protection characteristics
|
Parameter |
Set value (125,250,400) |
Set value (630,800) |
Factory set value |
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Remaining motion current I△n |
50,100,200,300,400,500,600,800automatic |
100,200,300,400,500,600,800,1000automatic |
500 |
Outline Overall and Installing Dimensions
Note: The left side of the attachment in the diagram is the auxiliary contact, and the right side is the lightning protection module. All models have the same attachment dimensions.
Characteristic Curve
