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
DIN Rail Mount
Protection by Thermal Magnetic Circuit Breaker
(18)
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
DRC3Pxx4x2
DRC3Pxx4x2
DRC3Pxx4x2
DRC3Pxx4x2
DRC3Pxx4x2
DRC3Pxx4x2
DRC3Pxx4x2 (up to 7.6A)
Solid State Contactor
3 controlled legs
DRC3Pxx4x
DRC3Pxx4x
DRC3Pxx4x
DRC3Pxx4x
DRC3Pxx4x
DRC3Pxx4x (up to 4.8A)
-
Solid State Contactor
Reversing
DRC3Rxx4x
DRC3Rxx4x
DRC3Rxx4x
DRC3Rxx4x
DRC3Rxx4x
DRC3Rxx4x
DRC3Rxx4x (up to 7.6A)
Protection by overload relays and fuses
(18)
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
DRC3Pxx4x2
DRC3Pxx4x2
DRC3Pxx4x2
DRC3Pxx4x2
DRC3Pxx4x2
DRC3Pxx4x2
DRC3Pxx4x2 (up to 7.6A)
Solid State Contactor
3 controlled legs
DRC3Pxx4x
DRC3Pxx4x
DRC3Pxx4x
DRC3Pxx4x
DRC3Pxx4x
DRC3Pxx4x(up to 4.8A)
-
Solid State Contactor
Reversing
DRC3Rxx4x
DRC3Rxx4x
DRC3Rxx4x
DRC3Rxx4x
DRC3Rxx4x
DRC3Rxx4x
DRC3Rxx4x (up to 7.6A)
Type of coordination 2
Protection by overload relays and fuses
(18)
Semiconductor fuses with less than 1621A2S
Nominal Motor Overload Relay
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
DRC3Pxx4x2
DRC3Pxx4x2
DRC3Pxx4x2
DRC3Pxx4x2
DRC3Pxx4x2
DRC3Pxx4x2
DRC3Pxx4x2 (up to 7.6A)
Solid State Contactor
3 controlled legs
DRC3Pxx4x
DRC3Pxx4x
DRC3Pxx4x
DRC3Pxx4x
DRC3Pxx4x
DRC3Pxx4x (up to 4.8A)
-
Solid State Contactor
Reversing
DRC3Rxx4x
DRC3Rxx4x
DRC3Rxx4x
DRC3Rxx4x
DRC3Rxx4x
DRC3Rxx4x
DRC3Rxx4x (up to 7.6A)
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)
What is the general time slice size of the current embedded operating system based on time slice rotation? What is the general time slice size that is appropriate if the time slice is fixed instead of...
Semiconductor lighting is an important development direction in the field of lighting in the future. As a new type of lighting source, light-emitting diodes are gaining more and more widespread applic...
[align=left][font=楷体, 楷体_GB2312][size=4] I have never had such a hard time writing an annual summary, probably because there are too many things I want to say and too many people I want to write about...
I am using a PMAC motion control card to control a motor. I want to detect whether the motor is in a stopped state. Should I detect the motor speed? Which variable should I detect? Thanks, I need it u...
Emergency hand-held lamps powered by 6V maintenance-free batteries are widely used in rural areas. The charger used is a transformer step-down and single diode half-wave rectifier, and the charging...[Details]
The rapid development of the Internet has realized high-speed information transmission and resource sharing, greatly facilitating people's lives. Embedded systems are widely used in various electr...[Details]
This program is written to simulate the serial port hardware mechanism. When used, a timed interrupt can be set with a time interval of 1/4 baud rate. The receiving function is called once for ea...[Details]
introduction
Solar cells and LED lighting are typical applications of new energy and energy-saving and efficient technologies. Solar LED lighting uses solar cells to convert solar energy...[Details]
1 Introduction
With the acceleration of the pace of urban modernization, society has higher requirements for urban road lighting and urban lighting projects. The state has clearly required tha...[Details]
DSP (digital signal processor) is used more and more frequently in today's engineering applications. There are three main reasons for this: first, it has powerful computing power and is capable of ...[Details]
With the rapid development of urban economy, elevators are increasingly used as a vertical transportation tool. However, elevator fault detection and maintenance, especially the role of elevator remot...[Details]
1. Introduction to CIF Board
Fieldbus integration based on PC system
Whether it is a master or a slave, fieldbus has won unanimous praise in the field of PC-based automation. For more...[Details]
This week, Microsoft held its 2012 Microsoft Worldwide Partner Conference (WPC) in Toronto, Canada. At the conference, Microsoft showed its new products and services to partners around the world. A...[Details]
LED is the abbreviation of light emitting diode, which is an electric light source made of semiconductor technology. The core part of LED is a chip composed of P-type semiconductor and N-type semi...[Details]
General LED lighting has a current limiting resistor in the driving circuit, and the power consumed by the resistor has nothing to do with the LED light emission. In order to improve efficiency, a...[Details]
With the advocacy and implementation of the government's Safe City Plan, the security market has increasingly higher requirements for the clarity of surveillance images. Imagine that after a case o...[Details]
It is well known to automotive suppliers that automakers are demanding more from their supply base. For connector suppliers, this means stricter requirements for product performance, stability and ...[Details]
According to the Industrial Technology Research Institute of Taiwan, due to factors such as the oil crisis and global warming, the issues of energy conservation and environmental protection have at...[Details]
The era of mobile access to the Internet has arrived, and it will rapidly change the business and infrastructure needs of mobile operators under a whole new trend of requirements. We need 4G LTE to...[Details]
Embedded System
京公网安备 11010802033920号
EEWORLD
