KR200310554Y1 - Circuit breakers controler of lamp - Google Patents

Abstract

The present invention relates to a power supply control device of a discharge lamp such as a sodium lamp or a metal lamp used as a street light, the discharge lamp power control device of the present invention is a fault detection unit for detecting the abnormality of the discharge lamp and ballast connected to the power source, It consists of a power supply circuit breaker operated by the signal of the fault detection unit, and when the discharge lamp or ballast is burned out, the fault detection unit operates the power supply circuit breaker to cut off the power supply to prevent secondary failure of the discharge lamp circuit. In addition, the present invention relates to a power supply control device for a discharge lamp that is easy to replace and maintain by providing an inspection terminal that can cut off no-load power loss and have an energy saving effect, and also easily check a failure site.

Description

Discharge lamp power control device {CIRCUIT BREAKERS CONTROLER OF LAMP}

The present invention relates to a power supply control device of a discharge lamp, in particular, in the street lamps such as sodium lamps, metal halide lamps used for street lamps, if the lamp, ballast, or the wire connecting the lamp and the ballast is in a broken state and supplying power The present invention relates to a discharging lamp power control device which can prolong the life of the ballast by not only preventing the unforeseen accidents but also identifying the failure part, thereby facilitating maintenance.

Generally, street lamps and security lamps are installed on roads or residential areas for night walking, vehicle driving, and crime prevention. The lamps used for the street lamps or security lamps are high-efficiency sodium lamps and metal halide lamps. Because of its low economical decay and long lifespan, it has excellent economical efficiency and is widely used in public places such as roads, alleys and tunnels where large brightness is required.

Such street lights or security lights are installed in a large amount in one area, and are turned on in the evening by the switching action of the automatic flasher, and are turned off by the automatic flasher in the morning. Is composed of a power supply circuit breaker 180, a stabilizer 120 for lamp start and voltage current stabilization, and a discharge lamp 110 that emits light as the gas is ionized when a gas is sealed therein and a voltage is applied thereto. The operation principle of the street lamp circuit will be described with reference to FIG. 6.

First, when a voltage is applied to the input terminal of the ballast 120, the igniter generates a high voltage pulse. Then, the discharge lamp 110 is turned on by the high voltage pulse of the igniter, and once the discharge lamp 110 is turned on, the igniter stops the operation and the generation of the high voltage pulse is stopped.

As described above, when the discharge lamp 110 starts to light up, the voltage applied to the discharge lamp 110 increases as the time passes and the current decreases, so that the emission of the discharge lamp 110 continues, The brightness of the discharge lamp 110 is gradually brightened. When the light emission continues and the applied voltage of the discharge lamp 110 reaches the set tube voltage and the current falls below the set tube current, the discharge lamp 110 reaches the maximum light emitting state and maintains the lighting state.

However, the discharge lamp 110 of such a street lamp circuit is often burned out due to its own life or external shock, overvoltage, etc., if the failure of the discharge lamp 110 is not immediately replaced, the ballast 120 ) Also has a problem that can be spread. That is, when power is applied to the ballast 120 when the discharge lamp 110 is damaged, power due to no-load power of the ballast 120 continues to be wasted, and an igniter is disposed on the secondary side of the ballast 120. Continuously generating a high voltage pulse of 1500V ~ 2000V for starting the discharge lamp 110 has a fatal effect on the life of the ballast 120 to replace not only the burned discharge lamp 110 but also the entire ballast 120 when left for a long time There is a problem to be done.

In addition, when the terminal of the discharge lamp 110 is in contact with the human body when replacing by a maintenance personnel there is a problem that causes an electric shock due to high voltage.

Conventional street light circuit that solves the above problems, in the normal street lamp circuit, the voltage sensor and the current sensor is connected to the primary side of the ballast 120, and the secondary sensor is connected to the current sensor is burned out state As a fault detection apparatus for a street lamp for detecting a voltage, when the voltage is applied to the ballast 120, the current flows in the primary side of the ballast 120, but the current does not flow in the secondary side by the voltage sensor and the current sensor. By detecting it, it is possible to check whether the discharge lamp 110 is broken by the wired or wireless remote device.

In addition, when the failure detection device is mounted inside the ballast 120, the LED is connected to the secondary side of the ballast 120 when the power is applied, when the LED is turned on, the discharge lamp 110 is in a normal state, When the LED is turned off, it is confirmed that the discharge lamp 110 is in a malfunction state.

However, the fault detection apparatus of the street lamp as described above only displays a failure state and does not immediately shut off the power applied to the street lamp circuit. Therefore, unless the discharge lamp 110 is immediately replaced, the night light is continuously turned on. Therefore, since power is applied to the ballast 120 and the igniter continuously oscillates a high voltage for a long time, no load power loss occurs, and the life of the ballast 120 is shortened.

In addition, the conventional ground fault circuit breaker 180 is configured to operate the ground fault circuit breaker 180 by opening and closing a door mounted on the case front, which is built in a box-shaped case. If the door is frequently opened during operation, the door may be separated from the case, and the case is not made of a waterproof type, and rainwater penetrates into the case during rainfall, causing a short circuit breaker to malfunction. There was a risk of electric shock.

The present invention has been made to solve the above problems, the object of the present invention is to connect the fault detection unit to the earth leakage breaker for supplying or interrupting the power to operate the earth leakage breaker by the fault detection unit when the discharge lamp or ballast is burned out It is possible to cut off the power applied to the street lamp circuit, and to accurately identify the failure site to provide a discharge lamp power control device that is easy to maintain.

It is still another object of the present invention to provide a discharge lamp power supply control device in which the ground fault breaker and the fault detection unit are incorporated in a waterproof housing so that there is no fear of malfunction or damage of the ground fault breaker.

1 is a configuration diagram of a discharge lamp power control device according to the present invention,

2 is an internal circuit diagram of the earth leakage breaker shown in FIG. 1;

3 is a flowchart of the fault detection unit shown in FIG. 2;

4 is a perspective view showing a state in which the discharge lamp power control apparatus according to the present invention is built in the housing,

5 is a cross-sectional view of FIG.

6 is a circuit diagram showing the configuration of a conventional street light.

* Description of the symbols for the main parts of the drawings *

1: discharge lamp 2: ballast

3: fault detection unit 4: earth leakage breaker

5: housing 6: leader

7: Needle terminal 8: Discharge member

30: current sensor 31: converter

32: operating voltage generator 33: rectifier circuit

34: time delay unit 35: operating voltage detection unit

36: output part 37: output relay

38: Output terminal 41: Handle

42: video current transformer 43: solenoid

44: test switch 45: fixed

46: Moving part 51: Storing part

52: cover 53: open

54: cover 55: groove

56: Cap

An object of the present invention as described above, the ballast (2) connected in series with the discharge lamp (1) to prevent the increase of current; An earth leakage circuit breaker 4 which is operated when an abnormal current flows due to an earth leakage; A fault detection unit (3) connected to the ballast (2) for detecting an abnormal current of the ballast (2); It is installed in the earth leakage breaker (4) and consists of a fixed portion 45 and a movable portion 46 to operate the movable portion 46 to contact both ends of the fixed portion 45 when the contact with the fixed portion 45 to short-circuit A test switch 44 for activating the breaker 4; When the fault detection unit 3 detects that the current of the ballast 2 is greater than or equal to the set current, the fault detection unit 3 conducts both ends of the fixing unit 45 to operate the earth leakage breaker 4. Is achieved by

Preferably, the fault detection unit 3 of the present invention, the current sensor 30 for detecting the current flowing in the ballast (2); A conversion unit 31 for converting the current detected by the current sensor 30 into a voltage; An operating voltage detector (35) for generating a signal of overcurrent by comparing the voltage inputted through the converter (31) with a set voltage; An output unit connected to both ends of the fixing unit 45 of the test switch 44 to operate the test switch 44 by the signal generation of the operating voltage detecting unit 35 to conduct the fixing unit 45; 36) is achieved by a discharge lamp power supply control device characterized in that.

Preferably, a time delay unit 34 is connected between the conversion unit 31 and the operating voltage detection unit 35 to determine whether the current detected by the current sensor 30 is a temporary phenomenon or a continuous phenomenon. It is achieved by the discharge lamp power supply control device, characterized in that for delaying the operation of the output unit 36 for a predetermined time.

Preferably, the lead wire 6 is connected between the ballast 2 and the discharge lamp 1, the needle terminal 7 is connected to the end of the lead wire 6, the needle terminal (7) Is achieved by the discharge lamp power supply control device, characterized in that the ballast (2) or the discharge lamp (1) can be confirmed by the reaction when the discharge member (8) is in close contact.

In addition, another object of the present invention, the earth leakage breaker (4), ballast (2) and fault detection unit (3) is achieved by a discharge lamp power supply control device characterized in that it is built in a waterproof housing (5) made of a completely sealed type. do.

Hereinafter, with reference to the accompanying drawings, the discharge lamp power supply control apparatus according to the present invention that can be carried out specifically to the object described in detail the configuration and the embodiment as follows. In particular, the discharge lamp power supply control apparatus according to the present invention is applied to a street lamp that is powered on at night and is turned on at night, the power is cut off in the daytime by the operation of the branch circuit breakers connected to the switchgear installed in each zone. .

1 is a circuit diagram showing a configuration of a discharge lamp power control device according to the present invention, the fault detection unit 3 is connected to a streetlight circuit consisting of a circuit breaker (4), ballast (2), discharge lamp (1), When burnout occurs in the discharge lamp 1 or the ballast 2, it is detected or displayed.

The earth leakage breaker 4 shown in FIG. 2 is installed on each pole of a street lamp, so that an overcurrent flows into the converter and the current applied to the load is exceeded by more than the rated value or when a ground fault occurs in the converter. It is installed to prevent, to control the handle 41 installed on the front to open and close the flow of current.

Operation of the ground fault circuit breaker 4, each wire of the line for supplying power to the load is passed through the image current transformer (ZCT) 42, through the image current transformer 42 in case of ground fault occurring on the load side Detects the difference between the load current value of each wire and judges it as a ground fault current, converts the detected ground current into a voltage value through a current / voltage conversion circuit, and then amplifies and compares it with a set voltage value. When the value is greater than the set voltage value, it sends a signal to the solenoid 43 to operate the ground fault circuit breaker 4 to cut off the load power.

In addition, in the image current transformer 42, another wire is connected to the wire in addition to the wire for supplying power to the load, and the fixing part 45 of the test switch 44 is connected to the wire, and the test switch When the movable part 46 of the 44 contacts the fixing part 45, current flows through the wire passing through the image current transformer 42 to have an effect such that a ground fault current flows. Since it detects this and operates the solenoid 43, the circuit breaker 4 is tripped to cut off the power, and thus it is possible to determine whether the circuit breaker 4 is malfunctioning.

The discharge lamp 1 is an energy-efficient high-pressure sodium metal halide lamp. The high-pressure lamp has a strong penetrating power of light and has a deterioration in luminous flux, and thus has a long lifespan. Due to the decreasing nature, high voltage is required for the initial lighting.

The ballast (2) is connected between the circuit breaker (4) and the discharge lamp (1) for opening and closing the power supply, to facilitate the initial lighting of the discharge lamp (1), by supplying a voltage to the discharge lamp (1) ), The terminal voltage is controlled and the lighting state of the discharge lamp 1 is stably maintained, and the choke coil, the power factor improving capacitor and the igniter are configured to start the discharge lamp 1 and The power factor is improved to a high power factor, and a constant voltage is continuously supplied to the discharge lamp 1 to interrupt the discharge of the lamp, thereby maintaining the lighting of the lamp continuously.

When the discharge lamp 1 burns out while the street lamp circuit constructed as described above is in operation, the ballast 2 is in a no-load state and the current at the secondary side of the ballast 2 becomes zero, but the primary side of the ballast 2 is stabilized ( The no-load fast current flows 2 to 2.5 times the rated input current by the power factor correction capacitor built in 2). This is because, because of the characteristics of the discharge lamp 1 and the ballast 2, a ground current having a very poor power factor flows in the circuit, so that a large capacity capacitor is built in order to improve the power factor to 90% or more at the rated load state to improve this. Because.

When the no-load state as described above, there is no load current, so the forward current of the capacitor flows only. At this time, the no-load forward current flows about 2 to 2.5 times of the rated input current, so as to detect it, on the primary side of the ballast 2. It is determined that the discharge lamp 1 is burned out by connecting the fault detection unit 3.

The fault detection unit 3 detects when the discharge lamp 1 is burned out and cuts off the flow of power. The fault detection unit 3 is connected to the primary side of the ballast 2 as shown in FIG. The current sensor 30 for sensing, the converter 31 for converting the current detected by the current sensor 30, and the operation of the output unit 36 in case an overcurrent flows due to a sudden situation A time delay unit 34 for delaying 4 to 5 minutes, an operation voltage detection unit 35 for generating a signal of overcurrent by comparing the voltage input to the next voltage after being delayed by the time delay unit 34 and the set voltage; ; An output unit connected to both ends of the fixing unit 45 of the test switch 44 to operate the test switch 44 by the signal generation of the operating voltage detecting unit 35 to conduct the fixing unit 45; 36).

Here, the conversion unit 31 is an operating voltage generator 32 which is a closed circuit composed of the current sensor 30, a variable resistor, and a fixed resistor to convert the current value detected by the current sensor 30 into a voltage value. Is converted into an alternating voltage through the rectification circuit, and the alternating voltage is converted into a direct current voltage through the rectifying circuit unit 33 and input.

The time delay unit 34 is turned on after the predetermined time has elapsed by the heat generation and the gas pressure of the discharge lamp 1 when the power is re-restored after a momentary power failure while the discharge lamp 1 is turned on. Since the current does not flow to the secondary side of the ballast 2 until the time until it reaches the first input current of the ballast 2, since the forward current of 2 to 2.5 times the rated input current flows, the fault detection unit 3 The current sensor 30 detects this and commits an error that is determined to be the burnout of the discharge lamp 1 by the current caused by the sudden situation as described above. After the operation of the output unit 36 is delayed for 4 to 5 minutes, and the abnormal current is continuously input even after the time elapsed by the capacitor, the output unit 36 is connected to the test switch 44 of the ground fault circuit breaker 4. It becomes conductive. This uses the time constant that the capacitor has during charging and discharging. Since the capacitor takes a certain time until the charging is started and is fully charged, the time delay effect is obtained by using the characteristics of the capacitor.

Therefore, when the discharge lamp 1 burns out and an abnormal current flows, the current sensor 30 detects this, and the current flows into a closed circuit composed of the current sensor 30, the variable resistor, and the fixed resistor. The AC voltage Va is induced by this. The AC voltage Va is converted into a DC voltage Vd via the rectifier circuit 33 and input to the capacitor of the time delay unit 34. The capacitor discharges after a predetermined time due to a time constant generated during charging. When the input voltage is equal to or higher than the voltage set in the operating voltage detector 35, the operating voltage detector 35 compares the input voltage with the set voltage. It becomes the output voltage of 35 and is applied to the output relay 37 and the output terminal 38, and the output part 36 is in a conducting state.

In this case, since the output unit 36 is connected to both ends of the fixing unit 45 forming the test switch 44 of the ground fault circuit breaker 4 by a wire, when the current flows through the output unit 36, the fixing unit ( Current is applied to both ends of the 45, so that the current flows to both ends of the fixing part 45 as if the movable part 46 of the test switch 44 is in contact with the fixing part 45. Therefore, since the fixing part 45 is connected to the image current transformer 42 by a wire drawn out through the image current transformer 42, when the current is applied to the fixing part 45, the image current transformer 42 is applied. By operating the solenoid 43 is to cut off the power of the earth leakage breaker (4).

Preferably, in the street lamp circuit having the above configuration, as shown in Figs. 1 and 5 in order to accurately determine the failure site of the ballast (2) or the discharge lamp (1), the ballast (2) and When the lead wire 6 is connected between the discharge lamps 1 and the needle terminal 7 is connected to the end of the lead wire 6 to bring the discharge member 8 closer, the reaction of the needle terminal 7 is achieved. The failure site of the street lamp circuit can be confirmed

Here, the needle-shaped terminal 7 and the discharge member 8 are made of a conductor such as a metal having excellent electrical conductivity.

That is, when the lamp is turned on for a predetermined time and the discharge lamp 1 is not turned on, the ground fault circuit breaker 4 is operated by the operation of the fault detection unit 3 to cut off the power. The reason for the non-lighting is caused by the burnout of the discharge lamp 1 or the ballast 2, and since the fault detection unit 3 is connected to the primary side of the ballast 2, the ballast 2 or the discharge lamp 1 If one of the) is burned out, the fault detection unit 3 operates the earth leakage breaker (4).

When the ground fault circuit breaker 4 is operated, it is necessary to determine whether it is caused by a ground fault or burnout of the discharge lamp 1 or burnout of the ballast 2.

For this purpose, the fault portion is determined by the needle terminal 7 and the discharge member 8. If the discharge lamp 1 is burned out, the needle type is formed through the oscillation voltage of the high voltage generated by the igniter of the ballast 2; Since a voltage is applied to the terminal 7, and when the discharge member 8, such as a driver, is brought into contact with one end of the needle terminal 7, sound and light are generated while the current is discharged through the discharge member 8. It is confirmed that the discharge lamp 1 is burned out.

In addition, when the ballast 2 is burned out, since the lead wire 6 does not receive a high voltage oscillation voltage, even if the discharge member 8 is brought into contact with one end of the needle terminal 7, no reaction occurs. It can be confirmed by this that the ballast 2 is burned out.

Since the earth leakage breaker 4 and the failure detection unit 3 should be accommodated in the same space, the earth leakage breaker 4 and the failure detection unit 3 may be installed in the housing 5 which is generally opened and closed by a door. It may be installed in (5).

The housing 5 is formed in a box shape so that the earth leakage breaker 4 and the fault detection unit 3 are safely embedded therein, and the earth leakage breaker 4 and the fault detection unit 3 have an interior space 51. After being embedded in the cover portion 52 formed in the form of a plate is fixed to the front of the housing portion 51 by a screw. At this time, since the sealing rubber (not shown) is attached to the inner edge of the cover portion 52, when the cover portion 52 is fixed to the front surface of the accommodating portion 51 by screwing, penetration of rainwater or the like is prevented. Will be prevented.

In addition, an opening portion 53 having a predetermined size is formed in the cover portion 52 so that only the handle 41 of the ground fault circuit breaker 4 protrudes to the outside, and the needle terminal 7 connected to the ballast 2 is externally formed. Grooves 55 recessed in the rear are formed to fix them so as not to contact them.

In addition, in order to seal the opening portion 53 and the recess 55 so as not to contact the outside, a cover 54 having a rubber material is provided on the front surface of the opening portion 53 to the inner surface of the lid portion 52. It is secured tightly so that rain water does not leak out, and the groove 55 is provided with a rubber cap 56 formed in accordance with the size of the groove 55 to be tightly fitted to the groove 55 to be waterproof. Seal as much as possible.

The earth leakage breaker 4 and the fault detection unit 3 are installed to be fixed to the housing 51 of the housing 5 formed as described above. In this case, the position of the earth leakage breaker 4 and the fault detection unit 3 is a cover. After installing to be fixed in accordance with the position of the opening portion 53 and the recess 55 formed in the portion 52, the cover portion 52 is fixed to the housing portion (51).

Then, the handle 41 of the earth leakage breaker 4 protrudes while extending the rubber cover 54 fixed to the cover portion 52 to the outside, since the rubber cover 54 has a strong elastic force due to the characteristics of the material. The handle 41 of the ground circuit breaker 4 is moved to the input position or the blocking position to prevent the ingress of rain water, and if burned out in the discharge lamp (1), ballast (2) or street lamps When the handle 41 of the ground fault circuit breaker 4 is moved to the blocking position, the handle 41 having the rubber cover 54 is moved back to the closing position after replacing or repairing the defective part. .

In addition, the needle terminal (7) connected to the lead wire (6) of the ballast (2) is penetrated into the groove (55) haunted from the cover portion 52 is fixed to be located inside the groove (55), In the front of the recess 55, the rubber cap 56 is pressed in, and the housing 5 becomes waterproof.

Therefore, when the ballast is generated in the ballast 2 or the discharge lamp 1 and the handle 41 of the ground fault circuit breaker 4 is blocked, and the failure position is to be checked, the rubber cap 56 is recessed. After the separation is carried out), the discharge member (8), such as a driver carried by the maintenance personnel to approach the needle terminal (7) to check the failure site by heat, light or sound, and after replacing or repairing the failure site, What is necessary is just to force the said rubber cap 56 to the said groove | channel 55 again.

Discharge lamp power control device according to the present invention, by a fault detection unit that detects when a current of more than the normal load state current flows to the ballast to operate the circuit breaker to supply power, if the discharge lamp or ballast is burned out immediately and the power supply By blocking the voltage, the ballast prevents burnout and life shortening and prevents no-load power loss.

In addition, the ballast terminal is a conductor connected to the ballast, when burnout occurs in the discharge lamp or ballast, contact the discharge member with the needle terminal to accurately determine the failure site (stabilizer, discharge lamp) by the reaction This makes it easy to replace and repair.

In addition, the earth leakage breaker, fault detection unit, and needle terminal are embedded inside the waterproof housing formed in a completely sealed type to prevent malfunction of the earth leakage breaker and fault detection unit such as rain water or moisture, and the front of the earth leakage breaker is insulated by rubber cover. Since it is in a packed state and the needle-shaped terminal is blocked from the outside by fastening the rubber cap, it prevents a malfunction of the ground fault circuit breaker due to moisture and prevents an electric shock accident when the ground fault circuit breaker is operated in rainy or humid places. I can reduce even more ..

Claims (5)

A ballast 2 connected in series with the discharge lamp 1 to prevent an increase in current; An earth leakage circuit breaker (4) which is operated when an electric current flows abnormally due to an electric leakage; A fault detection unit (3) connected to the ballast (2) for detecting an abnormal current of the ballast (2); It is installed in the earth leakage breaker (4) and is composed of a fixed portion 45 and a movable portion 46, when the movable portion 46 is in contact with the fixed portion 45, the both ends of the fixed portion 45 is connected to a short circuit A test switch 44 for checking whether the breaker 4 is normally operated; The fault detection unit (3) is characterized in that when the current of the ballast (2) is detected more than the set current conducts both ends of the fixed portion 45 to operate the earth leakage breaker (4). The method of claim 1, The fault detection unit 3, A current sensor 30 for detecting a current flowing in the ballast 2; A conversion unit 31 for converting the current detected by the current sensor 30 into a voltage; An operating voltage detector (35) for generating a signal of overcurrent by comparing the voltage inputted through the converter (31) with a set voltage; An output unit connected to both ends of the fixing unit 45 of the test switch 44 to operate the test switch 44 by the signal generation of the operating voltage detecting unit 35 to conduct the fixing unit 45; A discharge lamp power control device, characterized in that consisting of 36). The method of claim 2, Connected between the conversion unit 31 and the operating voltage detection unit 35, the operation of the output unit 36 for a predetermined time to determine whether the current detected by the current sensor 30 flows temporarily or continuously. Discharge lamp power supply control device characterized in that it comprises a time delay for delaying (34). The method according to claim 1 or 2, The lead wire 6 is connected between the ballast 2 and the discharge lamp 1, and the needle terminal 7 is connected to the end of the lead wire 6, and the discharge member is connected to the needle terminal 7. Discharge lamp power supply control device characterized in that when the contact (8) in close contact with the ballast (2) or the discharge lamp (1) by the reaction can be confirmed. The method according to any one of claims 1 to 3, The earth leakage breaker 4 and the fault detection unit 3 are embedded in a waterproof housing 5 made of a completely sealed type, and the handle 41 of the earth leakage breaker 4 is sealed by a cover 54, and the fault detection unit Discharge lamp power control device characterized in that the needle terminal (3) of (3) is fixed to the groove (55).