Hot sale 125A 250A 400A 630A 800A 400V 50 Hz remote monitoring Smart molded case circuit breaker MCCB 250A with RS485
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- Supplier: Yueqing Long Road Electric Co. Ltd.
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Product Overview
Description
Smart re-closing Circuit break with residual current protection
1.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 630A 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.
Products meet the following standards:Low-voltage Switchgear and Control Gear-Part 2:Circuit Breaker (IEC60947-2);
voltage and 630A 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.
Products meet the following standards:Low-voltage Switchgear and Control Gear-Part 2:Circuit Breaker (IEC60947-2);
2.Main Functions and Features
1.High-performance 32-bit ARM microprocessor is used to carry out signal processing and intelligent control in real time;
2.LCD Chinese/English display provides friendly HMl and simple operation;
3.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 realtime,and automatically adjust the gear to ensure the operation rate and reliability of the product;
4.Long delay,short delay and instantaneous three-stage protection,electronic tripping mode is applied,which s independent of supply voltage;
5.High breaking ability could ensure the reliability of short circuit protection for the line;
6.Overvoltage protection,undervoltage protection,phase loss protection;
7. Real-time display of residual current,three-phase supply voltage and load current of the line;
8.Protection functions and parameters can be set and modified online;
9.Trip types (residual current,locking,overload,undervoltage,overvoltage,phase loss)can be identified & displayed,and can be stored,inquired &deleted;
10.Network type has communication function,which can realize remote communication,telemetry,remote control and remote adjustment.
11.Pluggable lightning protection module (optional)
12.Infrared communication function (optional)
2.LCD Chinese/English display provides friendly HMl and simple operation;
3.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 realtime,and automatically adjust the gear to ensure the operation rate and reliability of the product;
4.Long delay,short delay and instantaneous three-stage protection,electronic tripping mode is applied,which s independent of supply voltage;
5.High breaking ability could ensure the reliability of short circuit protection for the line;
6.Overvoltage protection,undervoltage protection,phase loss protection;
7. Real-time display of residual current,three-phase supply voltage and load current of the line;
8.Protection functions and parameters can be set and modified online;
9.Trip types (residual current,locking,overload,undervoltage,overvoltage,phase loss)can be identified & displayed,and can be stored,inquired &deleted;
10.Network type has communication function,which can realize remote communication,telemetry,remote control and remote adjustment.
11.Pluggable lightning protection module (optional)
12.Infrared communication function (optional)
3.Main Technical Parameters
4.Description of Protection features
◆Overload long delay protection
operating value setting range
Sheet1:Overload Long Delay Parameters Setting
Parameters | Shell current | Set value | Factory setting value | |
value Ir1 | 125 | 50A、63A、80A、100A、125A | 125A | |
250 | 100A、125A、140A、160A、180A、200A、225A、250A | 250A | ||
400 | 160A、180A、200A、225A、250A、 315A、350A、400A | 400A | ||
630 | 250A、315A、350A、400A、500A、630A | 630A | ||
Delay time setting value tL | 3s,4s,6s,8s,10s 12s,16s,18s,OFF | 12s | ||
Gear value (mA) | Floating value (mA) |
50 | 25 |
100 | 50 |
200 | 100 |
300 | 150 |
400 | 200 |
500 | 250 |
600 | 300 |
800 | 400 |
1000 |
When the residual current is greater than the floating value of the gear but does not reach its operating value and stably maintains for 60s,the gear goes up a gear,and so on,until reaching the maximum gear;When the residual current is less than the floating value of the next gear in this gear and stably maintains for 120s,the gear goes down a gear,and so on,until reaching the minimum gear.Take "Gear 2"and the initial residual
current of 100mA of the line as an example.The circuit breaker is powered on,and the gear is automatically set to 300mA.When the residual current increases to more than 150mA and stabilizes for 60s,the gear
changes to gear 500mA;When the residual current decreases below 150mA and stabilizes for 120s,the gear changes to gear 200mA.
◆Automatic reclosing
When the residual current exceeds the operating current value,the gear can automatically reclose after 20~ 60s,but the manual closing is not limited by time.If the fault current is eliminated within 5s after closing,the closing is successful and the circuit breaker runs normally;If the fault current is not eliminated,the circuit
breaker trips again and is locked,so it cannot be reclosed automatically,but must be closed manually.
◆Overvoltage protection function
When the line phase voltage is higher than the set value of overvoltage protection,the circuit breaker
protection trips.When the line voltage returns to normal,the circuit breaker can be automatically closed for operation.The setting value range of overvoltage protection is 231V~330V,and the factory setting is 275V. Users can set or close the protection.
◆Undervoltage protection function
When the line phase voltage is lower than the set value of undervoltage protection,the circuit breaker
protection trips.When the line voltage returns to normal,the circuit breaker can be automatically closed for operation.
The setting value range of undervoltage protection is 88V~209V,and the factory setting is 145V.Users can set or close the protection.
◆Phase loss protection function
When the power supply terminal of the line is of phase loss,the circuit breaker protection trips.
When the line voltage returns to normal,the circuit breaker can be automatically closed for operation.
current of 100mA of the line as an example.The circuit breaker is powered on,and the gear is automatically set to 300mA.When the residual current increases to more than 150mA and stabilizes for 60s,the gear
changes to gear 500mA;When the residual current decreases below 150mA and stabilizes for 120s,the gear changes to gear 200mA.
◆Automatic reclosing
When the residual current exceeds the operating current value,the gear can automatically reclose after 20~ 60s,but the manual closing is not limited by time.If the fault current is eliminated within 5s after closing,the closing is successful and the circuit breaker runs normally;If the fault current is not eliminated,the circuit
breaker trips again and is locked,so it cannot be reclosed automatically,but must be closed manually.
◆Overvoltage protection function
When the line phase voltage is higher than the set value of overvoltage protection,the circuit breaker
protection trips.When the line voltage returns to normal,the circuit breaker can be automatically closed for operation.The setting value range of overvoltage protection is 231V~330V,and the factory setting is 275V. Users can set or close the protection.
◆Undervoltage protection function
When the line phase voltage is lower than the set value of undervoltage protection,the circuit breaker
protection trips.When the line voltage returns to normal,the circuit breaker can be automatically closed for operation.
The setting value range of undervoltage protection is 88V~209V,and the factory setting is 145V.Users can set or close the protection.
◆Phase loss protection function
When the power supply terminal of the line is of phase loss,the circuit breaker protection trips.
When the line voltage returns to normal,the circuit breaker can be automatically closed for operation.
5.Overall and Installation Dimensions
6.Diagram
◆Linkage protection function
Linkage protection can be carried out with other fire fighting equipment through linkage interface as follows :
Linkage protection can be carried out with other fire fighting equipment through linkage interface as follows :
input setting | Description of function | Priority | Delay time | ||
IN1is short-circuited to DCOM | Circuit breaker closing | Low | ≤40ms | ||
IN3is short-cdircuited to DCOM | Circuit breaker opening | High | ≤40ms | ||
Note:Long-term short-circuiting will make the short circuit always be in the open state.
Current (xIr1)A
FAQ
When can I receive your quotation and detail information after send the enquiry? | All your enquiry will be replied within 8 hours. |
Can I get samples before place an order ? | Of course! We also believe that sample order is the best way to prove the quality.And in our company we offer free sample service! Please send the enquiry to us and get the free sample! |
Can you print our own logo? | Yes,Our company are available for OEM. |
How long is the quality guarantee? | 2-5 years warranty,our products are 100% inspection. |
How long is the delivery time? | It usually takes about 3-5 working days for sample order,and 10-20 days for official order. |
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