SHORT CIRCUIT AND OVERLOAD PROTECTION FOR ALL DEVICES
(Conforming to the IEC60947-4-2 and UL508)
IEC standard 60947-4-1
make a distinction between two different types of protection, (called “coordination”), which are designated types “1” and "2".
Any short-circuit that occurs is cleared safely by either type of coordination.
The only difference between the 2 categories concerns the extent of the SSR damage caused by the short-circuit.
Type "1"
coordination requires that in the event of a short-circuit, the Solid State Contactor does not endanger personnel or installations,
but permanent damage to the SSC is permissible. In this case the SSC may need to be replaced. For this type of co-ordination,
the use of fusing or circuit breakers adequate to protect the system and wiring from short circuits, (but not specifically considering SSC protection), can be used.
Type "2"
coordination requires that under a short-circuit condition, the circuit is interrupted, the SSC does not endanger persons or installations,
and in addition the SSR will be able to operate after the fault condition is repaired.
Type of coordination 1
Solid State Contactor
Protection by Thermal Magnetic Circuit Breaker
Nominal Motor
Current
0.40-0.63 A
0.63-1 A
1-1.6 A
1.6-2.5 A
2.5-4 A
4-6.3 A
6.3-10 A
Thermal Magnetic Circuit Breaker
(Schneider Electric)
GV2ME04 / GV2P04
GV2ME05 / GV2P05
GV2ME06 / GV2P06
GV2ME07 / GV2P07
GV2ME08 / GV2P08
GV2ME10 / GV2P10
GV2ME14 / GV2P14
Solid State Contactor
2 controlled legs
DRC3Pxxx4xxx2
DRC3Pxxx4xxx2
DRC3Pxxx4xxx2
DRC3Pxxx4xxx2
DRC3Pxxx4xxx2
DRC3Pxxx4xxx2
DRC3Pxxx4xxx2 (up to 7.6A)
Solid State Contactor
3 controlled legs
DRC3Pxxx4xxx
DRC3Pxxx4xxx
DRC3Pxxx4xxx
DRC3Pxxx4xxx
DRC3Pxxx4xxx
DRC3Pxxx4xxx (up to 4.8A)
-
Solid State Contactor
Reversing
DRC3Rxxx4xx
DRC3Rxxx4xx
DRC3Rxxx4xx
DRC3Rxxx4xx
DRC3Rxxx4xx
DRC3Rxxx4xx
DRC3Rxxx4xx (up to 7.6A)
Protection by overload relays and fuses
Nominal Motor
Current
0.40-0.63 A
0.63-1 A
1-1.6 A
1.6-2.5 A
2.5-4 A
4-6.3 A
6.3-10 A
Overload Relay
(Schneider Electric)
LRD04
LRD05
LRD06
LRD07
LRD08
LRD10
LRD14
Class gG fuses
(example from Littlefuse)
CY14X51G16
CY14X51G16
CY14X51G25
CY14X51G25
CY14X51G25
CY14X51G40
CY14X51G40
Solid State Contactor
2 controlled legs
DRC3Pxxx4xxx2
DRC3Pxxx4xxx2
DRC3Pxxx4xxx2
DRC3Pxxx4xxx2
DRC3Pxxx4xxx2
DRC3Pxxx4xxx2
DRC3Pxxx4xxx2 (up to 7.6A)
Solid State Contactor
3 controlled legs
DRC3Pxxx4xxx
DRC3Pxxx4xxx
DRC3Pxxx4xxx
DRC3Pxxx4xxx
DRC3Pxxx4xxx
DRC3Pxxx4xxx (up to 4.8A)
-
Solid State Contactor
Reversing
DRC3Rxxx4xx
DRC3Rxxx4xx
DRC3Rxxx4xx
DRC3Rxxx4xx
DRC3Rxxx4xx
DRC3Rxxx4xx
DRC3Rxxx4xx (up to 7.6A)
Type of coordination 2
Protection by overload relays and fuses
Nominal Motor Overload Relay
Semiconductor fuses with less than 1621A2S
Solid State Contactor
(Schneider Electric) Littlefuse SIBA (Cylindric) Ferraz (Cylindric) 2 controlled legs
Current
0.40-0.63 A
0.63-1 A
1-1.6 A
1.6-2.5 A
2.5-4 A
4-6.3 A
6.3-10 A
LRD04
LRD05
LRD06
LRD07
LRD08
LRD10
LRD14
LA50QS40-4
LA50QS40-4
LA50QS40-4
LA50QS40-4
LA50QS40-4
LA50QS40-4
LA50QS40-4
50.058.06.40
50.058.06.40
50.058.06.40
50.058.06.40
50.058.06.40
50.058.06.40
50.058.06.40
A093909
A093909
A093909
A093909
A093909
A093909
A093909
DRC3Pxxx4xxx2
DRC3Pxxx4xxx2
DRC3Pxxx4xxx2
DRC3Pxxx4xxx2
DRC3Pxxx4xxx2
DRC3Pxxx4xxx2
DRC3Pxxx4xxx2 (up to 7.6A)
Solid State Contactor
3 controlled legs
DRC3Pxxx4xxx
DRC3Pxxx4xxx
DRC3Pxxx4xxx
DRC3Pxxx4xxx
DRC3Pxxx4xxx
-
Solid State Contactor
Reversing
DRC3Rxxx4xx
DRC3Rxxx4xx
DRC3Rxxx4xx
DRC3Rxxx4xx
DRC3Rxxx4xx
DRC3Rxxx4xx (up to 7.6A)
DRC3Pxxx4xxx (up to 4.8A) DRC3Rxxx4xx
Note:
All the Schneider Electric Thermal magnetic circuit breakers GV2 family (GV2ME and GV2P) is fully mechanical compatible with the DRC contactor using the GV2AF3 connection block.
All the Schneider Electric Overload relay LRD family is fully mechanical compatible with the DRC contactor without the need of any adapter.
The DRC Series can accept the LAD7C1 module (pre-wiring kit allowing direct connection of the NC contact of relay LRD to the contactor)
When the LAD7C1 module is used, the common terminal for the control input is not anymore the ”A2” terminal of DRC but it is the “96” terminal of the overload relay.
[i=s]This post was last edited by Quantum Well on 2016-12-22 12:01[/i]Zuckerberg recently posted a video on his Facebook homepage, claiming that he has created the AI "Jarvis", which is Tony Stark's A...
[font=微软雅黑, Tahoma, 宋体][color=#000000]I just got a CC2540 USB dongle, and it shows up as cabal controlled devices on my computer. Do I need to use CC Debugger to burn HostTestRelease_All.hex to show t...
Everyone has to go through five stages in life: infant, teenager, young adult, middle-aged, and old age. In each stage, we have to encounter problems that cannot be avoided in that stage. The workplac...
1>.\YX_GPS\port\c\yu_port_gui.c(79) : error C2039: 'Release' : is not a member of 'IDirectDrawSurface' 1> D:\Program Files\Windows CE Tools\wce500\STANDARDSDK_500\include\ ARMV4I\ddraw.h(1172) : see d...
[size=18px]This article mainly introduces how to download the OpenCV installation program, how to install and configure OpenCV under VS2008, and finally introduces a simple example of using OpenCV. [/...
[color=#000][font=宋体, "][size=13px]China and the U.S. have quietly started negotiating to improve U.S. access to Chinese markets, after a week filled with harsh words from both sides over Washington’s...
The TIA Portal software's shift instructions shift the contents of an accumulator bit by bit to the left or right. The number of bits shifted is determined by N. A left shift of N bits multiplies t...[Details]
The intelligent driving community has its own rhythm. Some are busy pushing new versions and focusing on R&D, others are busy with publicity and promotion, and still others are immersed in mass pro...[Details]
1. Equipment Overview
Shell-and-tube heat exchangers are a common heat exchange device used in chemical evaporation and heating equipment. Currently, the tubesheets of shell-and-tube heat exch...[Details]
New energy vehicles are increasingly popular with consumers due to policies and energy conservation. Once you've purchased your vehicle, maintenance is essential. However, due to the different powe...[Details]
Recently,
Xpeng Motors and Xinlian Integrated Circuit jointly announced the mass production of China's first hybrid silicon carbide product.
Designed and developed by Xpeng Motors and joint...[Details]
On August 25th, TSMC, the world's leading contract chip manufacturer, attracted significant attention for its decision to build a chip manufacturing facility in Arizona. TSMC primarily manufactures...[Details]
On August 25th, SK Hynix announced that it has completed development and entered mass production of its 321-layer, 2Tb QLC NAND flash memory product. This achievement marks the world's first applic...[Details]
On August 25th, Apple's expansion in India encountered new troubles. According to Bloomberg, Foxconn Technology Group has recalled approximately 300 Chinese engineers from India, further hindering ...[Details]
Since its invention in the mid-1940s, the microwave oven has evolved from a humble beginning to commercial use, entering homes in the 1960s and rapidly gaining popularity. Its basic functionality a...[Details]
The digital TV set-top box consists of a tuner, QAM demodulator, TS demultiplexer, MPEG-2 decoder, PAUNTSC video encoder, embedded CPU system and peripheral interfaces, CA module, and uplink data m...[Details]
A multilevel inverter converts a DC signal into a multilevel staircase waveform. Instead of a straight positive-negative output waveform, the output waveform of a multilevel inverter alternates in ...[Details]
The 2025 China International Automotive Testing Exhibition will be held at the Shanghai World Expo Exhibition and Convention Center from August 27 to 29, 2025.
Clacton Seafront, UK, ...[Details]
Batteries, at the core of new energy vehicles, are crucial to vehicle performance and range. Existing automotive batteries are categorized into lead-acid and lithium batteries. Currently, new energ...[Details]
With growing environmental awareness, the continuous improvement of three-electric technology and the increasing deployment of infrastructure such as charging stations, the electrification of new e...[Details]
Speaking of the problem of vehicle spontaneous combustion, whether it is a pure electric vehicle or a fuel vehicle, there will be incidents of spontaneous combustion. For the same spontaneous combu...[Details]