TWM552704U - A device able to monitoring of CTD and UPS and battery pack status - Google Patents

Abstract

This invention is a device able to monitoring of CTD and UPS and battery pack status. It solve the problem of trip circuit power source can not be tested in switchgear. Such as capacitor trip device CTD, UPS power supply, battery pack can not be simultaneous testing and monitoring at the same time. This cause the failure of the above equipment can not be known. This invention can resolve 1. Power off, 2. Attenuation, 3. Capacity insufficient, to monitor the disability condition. The emergency treatments and measures can be taken. The RS485 signal output is supplied for remote monitoring and preventing the system can not be isolated from the fault point when in accidents.

Description

Device for externally monitoring CTD and UPS and battery pack status

In the power distribution system, the high-voltage circuit breaker disk is a very important equipment and is valued. According to the certification requirements of Article 401 of the House Equipment Regulations, the high-voltage facilities, from the cabinet, high-voltage transformer, circuit breaker, voltage regulator, and current comparator , lightning arresters, high-voltage fuses, etc., must be verified. It is reasonable to say that the high-voltage system should be very reliable and has high safety and reliability. However, in practice, the situation of high-voltage power users is faulty. In the discussion, there are many cases found. The crux of the problem is that the high-voltage system provides the power supply disability of the tripping circuit, which causes an accident! It has been found that in high-voltage systems, the system provides a system that can safely isolate accidents from tripping circuit power components. For example, the capacitor tripping device CTD does not require any verification nor standard specifications. UPS power supply characteristics and internal battery problems must be reviewed. The problems of battery test and maintenance, etc., have indeed become a dead end in safety. When the component fails, the system cannot operate to isolate the high-voltage accident due to lack of electric energy, and the consequences are quite serious, and even cause compensation problems. At present, there is no working power supply for the high-voltage disk tripping circuit on the market, and an effective monitoring device is provided externally and an effective solution is provided.

In the high-voltage system, it is necessary to face up to the problem of the working power supply of the tripping loop of the tripping loop and to solve the importance of ensuring the quality of the power supply. A simple analogy, taking the well-known low-voltage form-cause circuit breaker MCCB as an example, the MCCB's main function is in addition to the normal opening/closing action. When an overload or short-circuit fault occurs, it must be tripped to protect the line and equipment to achieve an isolation accident (if the leakage circuit breaker is added to the leakage protection function). If the power failure of the trip circuit is disabled, the whole function of the high-voltage circuit breaker is lost, and there is no protection. The electronic protection power supply does not work, and there is no fault signal output; the circuit breaker has no driving power supply. The action can't jump off, just like the low-voltage circuit breaker's internal tripping mechanism is faulty, and it can never jump when the line fault occurs.

Taking the capacitor tripping device CTD as an example, the entire high-voltage disk is often overlooked. Most of the manufacturers are basically buying cheap products under the cost considerations. At present, whether the CTD capacity in the workshop is sufficient to carry the load, can not be verified and not valued, and there is no functional requirement to test whether the product is suitable for use (whether it is Self-inspection before leaving the factory or preventive detection measures taken after the installation is completed. It is expected to be repaired once a year to find the problem. If there is an abnormal accident, there is always a potential risk that the near-water can't save the near fire. The quality of the CTD is very limited. The definition of CTD quality is: When an accident occurs in the system, the CTD cannot provide an effective emergency power supply, and the protection power is activated to drive the circuit breaker to trip and isolate the accident point. 〉, and most of the indicators are unclear, and it is even more difficult to understand the condition of the CTD by means of self-operated testing. It is very unfair to the owner (user) in terms of equipment such as high-voltage equipment. It seems like a car with a beautiful appearance and a good performance. When the car can't confirm whether the two functions of the direction light and the brake are normal, it is a bad one and cannot be safely on the road. In the same way, the same problems and conditions as the capacitor tripping device CTD are also related to the problems of the UPS and the battery pack.

The high voltage disk trips the loop working power supply, wherein the principle of the DC disk is that the battery pack provides the system DC power supply. The applicable place of DC disk is 69KV, 161KV ultra-high voltage control power supply and system is huge, and the number of CB is large. The advantages of the DC disk are: 1. High stability, 2. The usual way in Europe and the United States, 3. The bigger the system, the more obvious its function. The disadvantages of the DC disk are: 1. Space requirements are large, 2. When the circuit is less, it is less economical, 3. Regular maintenance and repair costs are higher, 4. The battery characteristics are not easy to understand, and will be instantaneously disabled, 5. Lead Acid battery has acid gas and corrosiveness, 6. Nickel-cadmium battery has environmental concerns, 7. Lithium-iron battery control board quality doubts; Capacitor tripping device CTD principle is PT secondary side power input after rectification and capacitor charging Can output DC. The suitable place for the capacitor tripping device CTD is to use the PT secondary side circuit as the working power source (electronic power 驿) in the high voltage system. Capacitor tripping device CTD has the advantages of 1. The most economical when the circuit is small, 2. The cheap price is sufficient, 3. The installation and maintenance are easy, 4. The long life is easy to identify. The disadvantage of the capacitive tripping device CTD is that each disk must be installed to occupy the disk space. The principle of the UPS power supply is that the AC power input is supplied and discharged through the internal electronic circuit, and then the AC or DC output is converted. The applicable place of the UPS power supply is to use the PT secondary side circuit as the working power source (conventional rotary type protection electric 驿) AC/AC in the high voltage system. The advantages of UPS power supply are: 1. The price is not expensive, 2. The supply is sufficient, 3. The installation is simple. The disadvantages of the UPS power supply are: 1. The high-voltage disk is used for 10 years, 20 years, and 30 years, and the life of the UPS internal charge and discharge battery is 1-2 years. Therefore, the UPS is not suitable for the working power supply of the electronic electric cymbal, 2. The charging and discharging battery, such as the general battery, will have insufficient stability of instantaneous disability.

For the UPS can not be used as the operating power of the high-voltage disk tripping circuit: the general protection electronic power 驿 its burden capacity will generally not exceed 30VA, so the UPS used in this place is a general small UPS. The working principle is AC power input, which is input to the charging and discharging battery unit after being controlled by the electronic circuit, and then outputted by the AC power source. The battery unit is charged and discharged, and its battery life is about 1-2 years, and the battery is not easy to detect the phenomenon of attenuation, like a battery of a motorcycle or a car, and it is instantaneously disabled. The high-voltage switchboards have a service life of 10 years and more than 20 years. In terms of equipment such as high-voltage switchboards, it is not necessary to protect the power supply and circuit breakers from the circuit. The reason for using UPS is here. <Note: For the old rotary disc type electric power supply to use AC power supply, the UPS can be considered as one of the options for emergency working power supply. 〉The Chinese name of UPS is called the uninterruptible power supply, but in fact, when the power is cut off, the normal power supply is converted to the uninterruptible power supply. There is a time difference of switching, generally 4-20ms, in general. Commercial and home-use quality is a situation that may be tolerated, but if it is on a high-voltage power distribution system, when the switching time of the UPS is 4-20ms plus the response time of the protection power is 4-20ms, the time is added up. It may be greater than the time when the secondary side is three-phase short-circuited in the high-voltage system, so that the high-voltage disk can not be effectively powered off immediately to isolate the accident point, resulting in the European countries and Japan... The working power supply for the high voltage power distribution system tripping loop.

There are three basic requirements for the external monitoring of CTD and UPS and battery pack status: (1) It can be tested under load: It is an important function of the high voltage disc to isolate the accident when the fault occurs, so the owner must be able to clearly understand the situation, and Can also test at any time under load, to know if the system is normal? It does not affect the normal power supply operation. Be able to test when the power is normal. Is the equipment available? Is it necessary to check for faults or accidents? 〉(2) Stateful indicating device: CTD This product must enable the user to clearly understand whether the system can normally jump when the system is faulty. To be able to grasp the status of product performance, in order to facilitate interpretation and replacement. (3) There are practical and safety requirements: easy to install, it is best not to open the high voltage disk surface, and do not move to the control circuit during testing to prevent electric shock, electric shock or malfunction, etc.; The monitoring function is even better.

The external monitoring of CTD and UPS and battery pack status has the above three basic functions. It is very important and urgent to improve the problems of old components and prevent the recurrence of industrial safety accidents. In particular, the high-voltage disk tripping loop power supply, whether using CTD or UPS Or the battery pack may face a disconnection and power failure, etc., or a situation in which the attenuation or insufficient capacity causes disability.

In summary, for high-voltage power distribution systems, it is very important to provide high-voltage circuit breaker HVCB tripping circuit power supply, which is an important issue that is often overlooked in high-voltage switchboards, especially CTD, UPS, and battery in old equipment. Whether it can provide normal power to operate the high-voltage disk tripping loop normally, a device that monitors the status of CTD and UPS and battery pack externally is very important, and combined with the current intelligent and energy-saving switchboard, an external monitoring CTD and The UPS and battery pack status solves problems that were previously impossible to solve.

A device for externally monitoring the status of the CTD and the UPS and the battery pack can solve the problem that the market can not test the power supply of the tripping circuit of the device in the disk, for example, the capacitor jumping device CTD, the UPS power supply, and the battery pack are simultaneously performed. Test and monitoring, the above equipment failure can not know the situation, can solve 1. Power failure, 2. Attenuation, 3. Capacity monitoring when the capacity is insufficient, and do emergency treatment and timely contingency measures, with RS485 The signal output solves the problem that remote monitoring is impossible, preventing the system from being able to actuate the accident point in case of an accident.

In order to achieve the above purpose, a device for externally monitoring the status of the CTD and the UPS and the battery pack can be manufactured, including: an AC power connection terminal; a connection to the CTD or UPS or battery pack power input point terminal; and a subsequent CTD or UPS or battery Group power output point terminal; an internal control circuit having a line protection device circuit, a power supply display circuit, a switch circuit, a power state display circuit, a voltage comparison circuit, a time circuit, an internal automatic setting circuit, There may be a warning circuit, an RS485 signal transmission circuit, a box-shaped body, the box-shaped body, an electric meter, a display lamp, a protection device, a test switch, an alarm contact, a connection terminal, and the internal control circuit is combined.

In order to achieve the above purpose, the device can monitor the CTD and the UPS and the state of the battery pack, and the IC terminal contact, the IU terminal contact, and the connection terminal of the IB terminal contact in the box-shaped body of the device can be connected to the capacitor tripping device CTD. The power input point, the power input point of the UPS power supply to the tripping circuit working power supply, the power source input point of the battery pack to the tripping loop working power source, the OC terminal contact point, the OU terminal contact point, and the connection terminal of the OB terminal contact, The electrical connection is connected to the capacitor tripping device CTD, the UPS power supply, the battery pack power output connection terminal, and the contact of the OC terminal contact, the OU terminal contact, and the OB terminal contact is connected to the external monitoring CTD and the UPS and the battery. The voltage comparison circuit in the internal control circuit of the device box of the group state, and electrically connected to the display voltage state meter, and the RS485 signal transmission circuit. The display voltage state meter can be a conventional pointer type, a digital meter type, an LCD type, and one to three or a combination of two or more. The internal control circuit sets up a comparison circuit. When the voltage state is lower than the set operating voltage value, the internal warning circuit is activated and displayed on the display unit of the box-shaped body.

In order to achieve the above purpose, the device that can externally monitor the status of the CTD and the UPS and the battery pack inputs all the information from the power input point and the power output connection terminal of the box-shaped body to the microprocessor CPU in the internal control circuit. And according to the action sequence logic set by it, the function to be controlled is reached.

In order to achieve the above purpose, the device for externally monitoring the CTD and UPS and battery state can be electrically connected to the input terminal of the device for monitoring the state of the CTD and the UPS and the battery pack, and the inside of the box-shaped body. Set up a switch, for example using electromagnetic opening The MS, the relay POWER RY, etc. are used as the functional components of the line switching switch, and the secondary side of the switching switch is connected to the external connection terminal of the box-shaped body of the device for monitoring the CTD and the UPS and the battery pack state, and then The device to be monitored, such as the capacitor tripping device CTD, the UPS power supply, and the power input terminal of the battery pack, can effectively test the device to store the power supply load when the device is powered off due to the switching action of the switch. The actual state.

In order to achieve the above purpose, a manual test switch and an automatic test switch can be set up on the box body of the device for monitoring the state of the CTD and the UPS and the battery pack externally. When the test switch is activated, the internal control circuit starts a time circuit and voltage comparison circuit. And display the status on the box-shaped body display light group, and connect to the internal warning unit to achieve the function of display and control.

In order to achieve the above purpose, an internal RS485 signal circuit can be set up in the internal control circuit of the box-shaped body of the apparatus for externally monitoring the CTD and the UPS and the state of the battery pack, and connected to the external connection terminal to achieve signal transmission. The function.

In order to achieve the above purpose, the external principle of monitoring the CTD and UPS and battery state is to externally monitor the CTD and UPS and battery pack status. When manual test or internal automatic set automatic test, the internal control circuit is cut. Disconnect the AC power supply, so that the device to be tested, such as the capacitor trip device CTD, UPS power supply or battery pack, monitors whether there is enough power above the working voltage for a set time, if it is at the working voltage Below, it is known that the capacitance may be attenuated or the battery has been attenuated, and there must be contingency measures. Strained electrical energy should be supplied by other parts of the AC and DC power.

10‧‧‧ External monitoring of CTD and UPS and battery pack status

11‧‧‧AC power connection terminal

12‧‧‧Internal control circuit

13‧‧‧Toggle switch

14‧‧‧Box-like body

15‧‧‧Manual test switch

16‧‧‧Automatic test switch

17‧‧‧Power indicator light

18‧‧‧Switching switch action indicator

19‧‧‧IC terminal contacts

20‧‧‧OC terminal contacts

21‧‧‧IU terminal contacts

22‧‧‧OU terminal contacts

23‧‧‧IB terminal contacts

24‧‧‧OB terminal contacts

25‧‧‧Pointer type voltage status display device

26‧‧‧Warning contacts

27‧‧‧Warning lights

28‧‧‧RS485 monitoring point output connection terminal

29‧‧‧Digital meter type voltage status display device

30‧‧‧LCD type voltage status display device

31‧‧‧Display voltage status meter

32‧‧‧Voltage comparison circuit

33‧‧‧ time circuit

Figure 1 is the first preferred embodiment of the device for externally monitoring the status of CTD and UPS and battery pack. Illustration of the example.

Figure 2 is a schematic diagram showing a second preferred embodiment of the apparatus for externally monitoring the state of the CTD and the UPS and the battery pack.

Figure 3 is a schematic diagram of a third preferred embodiment of the apparatus for externally monitoring CTD and UPS and battery state.

Figure 4 is a schematic diagram showing a fourth preferred embodiment of the apparatus for externally monitoring the state of the CTD and the UPS and the battery pack.

Fig. 5 is a schematic view showing a fifth preferred embodiment of the apparatus for externally monitoring the state of the CTD and the UPS and the battery pack.

Figure 6 is a block diagram showing the circuit structure of the device for externally monitoring the state of the CTD and the UPS and the battery pack.

Figure 7 is a flow chart showing the sequence of actions for externally monitoring the CTD and UPS and battery pack states.

A first preferred embodiment of an apparatus 10 for externally monitoring CTD and UPS and battery state, as shown in FIG. 1, an external power source is connected to the external power supply connection terminal 11 of the external monitoring CTD and UPS and battery state device 10. The internal control circuit 12 is electrically connected, and the switch 13 is connected. The box-shaped body 14 has a manual test switch 15 operable, the automatic test switch 16 is operable, and is connected to the internal control circuit 12, and has a power display light 17 and a switch operation display. The lamp 18, the IC terminal contact 19, the OC terminal contact 20 are connected to the power input point of the CTD, the power output connection terminal, the IU terminal contact 21, the OU terminal contact 22 are connected to the power input point of the UPS, and the power output connection terminal , IB terminal contact 23, OB terminal contact 24 is connected to the power input point of the battery pack, and the power output The connection terminal has a pointer type voltage state display device 25, an alarm contact 26, an alarm display lamp 27, and an RS485 monitoring point output connection terminal 28 (the internal circuit configuration diagram is as shown in FIG. 6).

A second preferred embodiment of an apparatus 10 for externally monitoring CTD and UPS and battery state, as shown in FIG. 2, an external power source is connected to the external power supply connection terminal 11 of the external monitoring CTD and UPS and battery state device 10. The internal control circuit 12 is electrically connected, and the switch 13 is connected. The box-shaped body 14 has a manual test switch 15 operable, the automatic test switch 16 is operable, and is connected to the internal control circuit 12, and has a power display light 17 and a switch operation display. The lamp 18, the IC terminal contact 19, the OC terminal contact 20 are connected to the power input point of the CTD, the power output connection terminal, the IU terminal contact 21, the OU terminal contact 22 are connected to the power input point of the UPS, and the power output connection terminal The IB terminal contact 23 and the OB terminal contact 24 are connected to the power input point and the power output connection terminal of the battery pack, and the appearance has a digital meter type voltage state display device 29, an alarm contact 26, a warning display lamp 27, and an RS485 monitoring point. The output connection terminal 28 (the internal circuit structure diagram is as shown in Fig. 6).

A third preferred embodiment of an apparatus 10 for externally monitoring CTD and UPS and battery state, as shown in FIG. 3, an external power source is connected to the external power supply connection terminal 11 of the external monitoring CTD and UPS and battery state device 10. The electrical control internal control circuit 12 is connected to the changeover switch 13. The box-shaped body 14 has a manual test switch 15 operable, the automatic test switch 16 is operable, and is connected to the internal control circuit 12, and has a power display light 17, a switch operation display. The lamp 18, the IC terminal contact 19, the OC terminal contact 20 are connected to the power input point of the CTD, the power output connection terminal, the IU terminal contact 21, the OU terminal contact 22 are connected to the power input point of the UPS, and the power output connection terminal , IB terminal contact 23, OB terminal contact 24 is connected to the power input point of the battery pack, the power output connection terminal, and the appearance has three pointer type voltage state display devices 25, warning contacts 26, warning display The indicator light 27 and the RS485 monitoring point output connection terminal 28 (the internal circuit structure diagram is as shown in Fig. 6).

A fourth preferred embodiment of the apparatus 10 for externally monitoring the status of the CTD and the UPS and the battery pack, as shown in FIG. 4, the external power source is connected to the AC power connection terminal 11 of the externally monitored CTD and UPS and battery pack state device 10. The electrical control internal control circuit 12 is connected to the changeover switch 13. The box-shaped body 14 has a manual test switch 15 operable, the automatic test switch 15 is operable, and is connected to the internal control circuit 12, and has a power display light 17 and a switch operation display. The lamp 18, the IC terminal contact 19, the OC terminal contact 20 are connected to the power input point of the CTD, the power output connection terminal, the IU terminal contact 21, the OU terminal contact 22 are connected to the power input point of the UPS, and the power output connection terminal , IB terminal contact 23, OB terminal contact 24 is connected to the power input point of the battery pack, the power output connection terminal, and the appearance has three digital meter type voltage state display devices 29, warning contacts 26, warning display lights 27, RS485 monitoring The point output connection terminal 28 (the internal circuit structure diagram is as shown in Fig. 6).

A fifth preferred embodiment of an apparatus 10 for externally monitoring CTD and UPS and battery state, as shown in FIG. 5, an external power source is connected to the external power supply connection terminal 11 of the external monitoring CTD and UPS and battery state device 10. The internal control circuit 12 is electrically connected, the switch 13 is connected, the box-shaped body 14 is operated, the manual test switch 15 is operable, the automatic test switch 16 is operable, and the internal control circuit 12 is connected to the internal control circuit 12, and the power display lamp 17 and the switch are operated. The display lamp 18, the IC terminal contact 19, the OC terminal contact 20 are connected to the power input point of the CTD, the power output connection terminal, the IU terminal contact 21, the OU terminal contact 22 are connected to the power input point of the UPS, and the power output connection is continued. The terminal, the IB terminal contact 23, the OB terminal contact 24 are connected to the power input point of the battery pack, the power output connection terminal, and the appearance has an LCD type voltage state display device 30, an alarm contact 26, and an alarm display light. 27, RS485 monitoring point output connection terminal 28 (the internal circuit structure schematic block diagram as shown in Figure 6).

An operation principle of an apparatus 10 for externally monitoring CTD and UPS and battery state, the internal control circuit 12 of the apparatus 10 for externally monitoring CTD and UPS and battery state is provided with a changeover switch 13 which connects the AC power of the box-shaped body 14 The terminal 11 is connected, and the secondary side is electrically connected to the device to be monitored, and is used as an input connection point of the AC power source, so as to perform a switching action; the box-shaped body 14 of the device 10 for externally monitoring the CTD and the UPS and the battery pack state has The connection terminal is electrically connected to the power output end of the device to be tested, and is electrically connected to the internal control circuit 12, and the internal control circuit 12 converts the input power into a DC power source, and is electrically connected to the display voltage state meter 31 and the RS485 signal output. To the central monitoring center. (General CTD, battery pack is DC power supply, UPS is AC power supply) and then operated by internal voltage comparison circuit 32. If it is higher than the set value, the function is normal. If it is lower than the set value, the display voltage is too low, and the warning is given. The contact 26 is actuated and the warning display lamp 27 is illuminated (the flowchart of the operation sequence is as shown in Fig. 7).

An operation principle of an apparatus 10 for externally monitoring CTD and UPS and battery state, the internal control circuit 12 of the apparatus 10 for externally monitoring CTD and UPS and battery state is provided with a changeover switch 13 which connects the AC power of the box-shaped body 14 The terminal 11 is connected, and the secondary side is electrically connected to the device to be monitored, and is used as an input connection point of the AC power source, so as to perform a switching action; the box-shaped body 14 of the device 10 for externally monitoring the CTD and the UPS and the battery pack state has The connection terminal is electrically connected to the power output end of the device to be tested (generally CTD, the battery pack is a DC power source, and the UPS is an AC power source), and is electrically connected to the internal control circuit 12, and the internal control circuit 12 converts the input power into a DC The power supply is electrically connected to the display voltage state meter 31 and the RS485 signal is output to the central monitoring center. When the manual test switch 15 is actuated, the changeover switch 13 is actuated, and the AC power supply is stopped from supplying the device to be tested, and a time circuit 33 is triggered in the internal control circuit 12, and then The internal voltage comparison circuit 32 is activated. If the value is higher than the set value, the function is normal. If the value is lower than the set value, the display voltage is too low, the capacity is insufficient, and the warning contact 26 is activated, and the warning indicator light 27 is illuminated (the action is The sequence flow chart is shown in Figure 7.

An operation principle of an apparatus 10 for externally monitoring CTD and UPS and battery state, the internal control circuit 12 of the apparatus 10 for externally monitoring CTD and UPS and battery state is provided with a changeover switch 13 which connects the AC power of the box-shaped body 14 The connection terminal 14 is electrically connected to the device to be monitored, and is used as an input connection point of the AC power supply, so as to perform a switching action; the external monitoring CTD is connected with the box-shaped body of the device 10 of the UPS and the battery pack state. The terminal is electrically connected to the power output end of the device to be tested (generally CTD, the battery pack is a DC power source, and the UPS is an AC power source), and is electrically connected to the internal control circuit 12, and the internal control circuit 12 converts the input power into a DC power source. , electrically connected to the display voltage state meter 31, RS485 signal output to the central monitoring center. The internal control circuit 12 has an automatic setting time circuit 33, which operates at a set time to operate the changeover switch 13, and stops the supply of the AC power supply to the device to be tested, and triggers a time circuit 33 in the internal control circuit 12, and then internally The voltage comparison circuit 32 is activated. If the value is higher than the set value, the function is normal. If the value is lower than the set value, the display voltage is too low, the capacity is insufficient, and the warning contact 26 and the warning display light 27 are turned on (the flow chart of the operation sequence) As shown in Figure 7).

In summary, the authoring device can solve the problem in the market that it is impossible to test the power supply of the circuit in the disk, and can solve the problem of power failure, 2. attenuation, and 3. capacity shortage. Monitoring, and doing emergency treatment and timely contingency measures, with RS485 output to solve the problem of remote monitoring, to prevent the system from being able to actuate the accident in the event of an accident. Combining the above functions, as shown in Figures 1 to 7, it can be known that the function of the device can solve various special needs functions, and the cost and economical savings, as well as the safety of the work safety. l, the reliability of the quality of electricity is improved, and the utilization of the industry is very substantial. In the relevant products and approved patent announcements on the market, the technical features of the essence of the creation are not the same, and the novelty is also met. The progressive legal patent application requirements, and the application for patents in accordance with the law, please ask your review committee to give the patent as soon as possible to ensure the rights and interests of the applicant. However, the only one disclosed in this case is the preferred embodiment of this creation. It is not possible to limit the scope of the creation of this creation. Any equivalent change or modification made in accordance with the spirit of this creation still covers the scope of patent application for this creation. in.

10‧‧‧ External monitoring of CTD and UPS and battery pack status

11‧‧‧AC power connection terminal

12‧‧‧Internal control circuit

13‧‧‧Toggle switch

14‧‧‧Box-like body

15‧‧‧Manual test switch

16‧‧‧Automatic test switch

17‧‧‧Power indicator light

18‧‧‧Switching switch action indicator

19‧‧‧IC terminal contacts

20‧‧‧OC terminal contacts

21‧‧‧IU terminal contacts

22‧‧‧OU terminal contacts

23‧‧‧IB terminal contacts

24‧‧‧OB terminal contacts

25‧‧‧Pointer type voltage status display device

26‧‧‧Warning contacts

27‧‧‧Warning lights

28‧‧‧RS485 monitoring point output connection terminal

Claims (2)

A device for externally monitoring the status of the CTD and the UPS and the battery pack, comprising: an AC power connection terminal; a connection to the CTD or UPS or battery pack power input point terminal; a connection to the CTD or UPS or battery pack power output point terminal; an internal control Circuit, the internal control circuit has a line protection device circuit, a power display circuit, a switch circuit, a power state display circuit, a voltage comparison circuit, a time circuit, an internal automatic setting circuit, a warning circuit, and an RS485 signal transmission circuit; A box-shaped body, the box-shaped body, having an electric meter, a display lamp, a test switch, an alarm contact, a connection terminal, and combining the internal control circuit. A device for externally monitoring the status of the CTD and the UPS and the battery pack, comprising: an AC power connection terminal; a connection to the CTD or UPS or battery pack power input point terminal; a connection to the CTD or UPS or battery pack power output point terminal; an internal control a circuit, the internal control circuit has a switch, the switch is activated to power off the external AC power source, and the terminal of the CTD or the UPS or the battery power output point is electrically connected to the internal control circuit, and the electric energy is converted into DC power. The internal control circuit starts a time circuit and the voltage comparison circuit is electrically connected to the power state display circuit; a box-shaped body, the box-shaped body has a test switch, a display device, a connection terminal, and the internal control circuit is combined.