LMM1EL Auto Reclosing Circuit Breaker
LMM1EL Auto Reclosing Circuit Breaker
It is an intelligent power equipment that integrates protection, monitoring and control. When the line trips due to a fault, it can automatically start the recovery program and try to close after a preset delay to achieve automatic recovery from instantaneous faults.
Model name:LMM1EL
Rated current:125、250、400、630、800
Setting current range:(0.4~1)In
Poles:3P(220V)、3P+N、4P
Rated insulation voltage Ui (V):AC 1000V
Rated impulse withstand voltage Uimp (kV):12kV
Rated working voltage Ue(V): AC 400V 50/60Hz
It is an intelligent power equipment that integrates protection, monitoring and control. When the line trips due to a fault, it can automatically start the recovery program and try to close after a preset delay to achieve automatic recovery from instantaneous faults.
Model name:LMM1EL
Rated current:125、250、400、630、800
Setting current range:(0.4~1)In
Poles:3P(220V)、3P+N、4P
Rated insulation voltage Ui (V):AC 1000V
Rated impulse withstand voltage Uimp (kV):12kV
Rated working voltage Ue(V): AC 400V 50/60Hz
The LMM1EL series reclosing current operated circuit breaker(hereinafterreferred toas circuit breaker)is mainly suitable for distribution networks with frequency of AC 50/60Hz and rated working voltage ofAC400V Used in three-phasefour-wire power supply andconsumption system with neutral point directly grounded.It has functions such as overload, short circuit, phase loss, overvoltage, undervoltage.residual current action protection, etc. lt can protect circuit and electrical equipmenfrom damage, and also provide protection for possible grounding fault and indirectpersonal contact in circuit.The product complies with IEC 60947-2 standard.
Product feature
Multiple functions
It has protection functions such as residual current, overcurrent, short circuit, etcas well as practical functions such as automatic reclosing, residual current display, realtime load current display, action status indication and trp data display. The product alsohas functions such as pluggable lightning protection module, four remote functions and special adapter.
Small volume
The combination of electric operating mechanism and air circuit breaker has been transformed into an integrated type, with reduced installation location and wiring.The operation method with configurable function characteristic can set the required functions such as action current,breaking time and main circuit current according to the actual situation.
intelligence
The intelligent control circuit composed of single chip microprocessor can set and display load current, monitor the cause of fault trip, display fault parameters during trip,and query the total number of various fault trips.
Communicability (when this function is required during ordering)
The communication type leakage circuit breaker can record and query detailed date such as the phase sequence that causes the trip, cause and trip time, and has the function of historical data recording; the communication series product adopts RS-485 communication port and have multiple communication protocols to choose from.it can establish communication function with intelligent distribution transformer terminal, upper computer, etc., and achieve remote parameter adjustment, information query and fault parameter download.
Main technical parameter
| Parameter Item | LMM1EL-125 | LMM1EL-250 | LMM1EL-400 | LMM1EL-630 | LMM1EL-800 |
|---|---|---|---|---|---|
| Frame current In (A) | 125 | 250 | 400 | 630 | 800 |
| Overload long delay setting range IR (A) | (0.4~1)In | ||||
| Rated residual operating current I△n (mA) | 30 (non delay type only); 50/100/150/200/300/500/900/1000/OFF graded adjustment delay type, automatic tracking | ||||
| Ultimate non driving time (s) | 0.06 / 0.1 / 0.2 optional settings | ||||
| Number of poles | 3P+N; 4P | ||||
| Rated insulation voltage Ui (V) | AC 1000 | ||||
| Rated impulse withstand voltage Uimp (kV) | 12kV | ||||
| Rated working voltage Ue (V) | AC 400 50/60Hz | ||||
| Rated ultimate short-circuit breaking capacity Icu (kA) | M50/H85 | M50/H85 | M65/H85 | M65/H85 | 65 |
| Rated service short-circuit breaking capacity Ics (kA) | M35/H65 | M35/H65 | M50/H65 | M50/H65 | 100 |
| Rated short time withstand current Icw | 5kA/1S | 5kA/1S | 10kA/1S | 10kA/1S | 10kA/1S |
| Selective category | Category B | Category B | Category B | Category B | Category B |
| Rated residual short-circuit making and breaking capacity I△m (kA) | 25% Icu | ||||
| Reclosing interval time (s) | 20~60 (manual closing is not limited by time interval) | ||||
Overload Long Delay Parameter Setting Table
| Parameter | Frame current | Set value | Factory set value |
|---|---|---|---|
| Action set value Ir1 | 125 | 50A~125A adjustable | 125A |
| 250 | 100A~250A adjustable | 250A | |
| 400 | 160A~400A adjustable | 400A | |
| 630 | 252A~630A adjustable | 630A | |
| 800 | 320A~800A adjustable | 800A | |
| Delay time set value tL | – | 3–18s | 3s |
Installation dimension
| Specification | Outline dimension | Installation dimension | External copper plate dimension | Installation screw dimension | ||||
|---|---|---|---|---|---|---|---|---|
| W | L | H | A | B | D | C | ||
| LMM1EL-125 | 122 | 220 | 122 | 199 | 60 | 30 | 16 | φ4 × 45 |
| LMM1EL-250 | 142 | 240 | 135 | 201 | 70 | 35 | 22 | φ4 × 45 |
| LMM1EL-400(630) | 195 | 335 | 177 | 272 | 96 | 48 | 30 | φ6 × 70 |
| LMM1EL-800 | 240 | 355 | 187 | 285 | 116 | 58 | 40 | φ6 × 70 |
The LMM1EL series reclosing current operated circuit breaker(hereinafterreferred toas circuit breaker)is mainly suitable for distribution networks with frequency of AC 50/60Hz and rated working voltage ofAC400V Used in three-phasefour-wire power supply andconsumption system with neutral point directly grounded.It has functions such as overload, short circuit, phase loss, overvoltage, undervoltage.residual current action protection, etc. lt can protect circuit and electrical equipmenfrom damage, and also provide protection for possible grounding fault and indirectpersonal contact in circuit.The product complies with IEC 60947-2 standard.
Product feature
Multiple functions
It has protection functions such as residual current, overcurrent, short circuit, etcas well as practical functions such as automatic reclosing, residual current display, realtime load current display, action status indication and trp data display. The product alsohas functions such as pluggable lightning protection module, four remote functions and special adapter.
Small volume
The combination of electric operating mechanism and air circuit breaker has been transformed into an integrated type, with reduced installation location and wiring.The operation method with configurable function characteristic can set the required functions such as action current,breaking time and main circuit current according to the actual situation.
intelligence
The intelligent control circuit composed of single chip microprocessor can set and display load current, monitor the cause of fault trip, display fault parameters during trip,and query the total number of various fault trips.
Communicability (when this function is required during ordering)
The communication type leakage circuit breaker can record and query detailed date such as the phase sequence that causes the trip, cause and trip time, and has the function of historical data recording; the communication series product adopts RS-485 communication port and have multiple communication protocols to choose from.it can establish communication function with intelligent distribution transformer terminal, upper computer, etc., and achieve remote parameter adjustment, information query and fault parameter download.
Main technical parameter
| Parameter Item | LMM1EL-125 | LMM1EL-250 | LMM1EL-400 | LMM1EL-630 | LMM1EL-800 |
|---|---|---|---|---|---|
| Frame current In (A) | 125 | 250 | 400 | 630 | 800 |
| Overload long delay setting range IR (A) | (0.4~1)In | ||||
| Rated residual operating current I△n (mA) | 30 (non delay type only); 50/100/150/200/300/500/900/1000/OFF graded adjustment delay type, automatic tracking | ||||
| Ultimate non driving time (s) | 0.06 / 0.1 / 0.2 optional settings | ||||
| Number of poles | 3P+N; 4P | ||||
| Rated insulation voltage Ui (V) | AC 1000 | ||||
| Rated impulse withstand voltage Uimp (kV) | 12kV | ||||
| Rated working voltage Ue (V) | AC 400 50/60Hz | ||||
| Rated ultimate short-circuit breaking capacity Icu (kA) | M50/H85 | M50/H85 | M65/H85 | M65/H85 | 65 |
| Rated service short-circuit breaking capacity Ics (kA) | M35/H65 | M35/H65 | M50/H65 | M50/H65 | 100 |
| Rated short time withstand current Icw | 5kA/1S | 5kA/1S | 10kA/1S | 10kA/1S | 10kA/1S |
| Selective category | Category B | Category B | Category B | Category B | Category B |
| Rated residual short-circuit making and breaking capacity I△m (kA) | 25% Icu | ||||
| Reclosing interval time (s) | 20~60 (manual closing is not limited by time interval) | ||||
Overload Long Delay Parameter Setting Table
| Parameter | Frame current | Set value | Factory set value |
|---|---|---|---|
| Action set value Ir1 | 125 | 50A~125A adjustable | 125A |
| 250 | 100A~250A adjustable | 250A | |
| 400 | 160A~400A adjustable | 400A | |
| 630 | 252A~630A adjustable | 630A | |
| 800 | 320A~800A adjustable | 800A | |
| Delay time set value tL | – | 3–18s | 3s |
Installation dimension
| Specification | Outline dimension | Installation dimension | External copper plate dimension | Installation screw dimension | ||||
|---|---|---|---|---|---|---|---|---|
| W | L | H | A | B | D | C | ||
| LMM1EL-125 | 122 | 220 | 122 | 199 | 60 | 30 | 16 | φ4 × 45 |
| LMM1EL-250 | 142 | 240 | 135 | 201 | 70 | 35 | 22 | φ4 × 45 |
| LMM1EL-400(630) | 195 | 335 | 177 | 272 | 96 | 48 | 30 | φ6 × 70 |
| LMM1EL-800 | 240 | 355 | 187 | 285 | 116 | 58 | 40 | φ6 × 70 |
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