CN105120573A - Street lamp control circuit and method - Google Patents
Street lamp control circuit and method Download PDFInfo
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- CN105120573A CN105120573A CN201510591669.7A CN201510591669A CN105120573A CN 105120573 A CN105120573 A CN 105120573A CN 201510591669 A CN201510591669 A CN 201510591669A CN 105120573 A CN105120573 A CN 105120573A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The invention discloses a street lamp control circuit and method. Two groups of current relays are used for sampling the starting current and the running current of a street lamp respectively and then the combination of a time relay and an intermediate relay performs a short-circuit and overload protection function on a distribution loop by jumping over a start process, thereby solving a problem of breaker trip out and increase in investment in a street lamp start process in conventional design.
Description
Technical field
The invention belongs to electic protection and control technology field, relate to a kind of streetlight control circuit and control method.
Background technology
In road lighting, the high-power gas charging such as high-pressure sodium lamp and metal halide lamp class light source, because it has the advantages such as luminous efficiency high and life-span is long, is widely used.But, there are problems in actual applications in the special electrical characteristic of this kind of light source in starting process.The starting current of gaseous discharge lamp is about about 2 times of normal operating current, and the duration is about 10 minutes.Electric this characteristic, easily causes two kinds of problems.The first, with Normal practice, select circuit breaker by 1.25 times of normal operating current, release cannot avoid the starting current of street lamp, causes circuit breaker trip.Another kind, by avoiding street lamp starting current, namely 2 times of running currents select circuit breaker, can meet start request, need the sectional area increasing distribution cable, and to meet protection cooperation, causing investment increases.
Summary of the invention
The object of this invention is to provide a kind of design, solve the problem of circuit breaker trip and increase investment in street lamp starting process in traditional design.
A kind of streetlight control circuit, its major loop comprises low-voltage circuit breaker, A.C. contactor, current transformer, the first button, the second button, secondary signal lamp, the first signal lamp, fuse, the first auxiliary relay, the second auxiliary relay, the time relay, three overload protection current relays, three short-circuit protection current relays and equivalent loads of road lamps, and the first siding ring of described low-voltage circuit breaker, A.C. contactor, current transformer and equivalent loads of road lamp are serially connected between live wire and zero line, ground wire successively; Live wire is by connecting first node after fuse, and zero line connects Section Point, four branch roads below in parallel between first node with Section Point:
Branch road one: first node is by connecting the 3rd node after the second button; 3rd node is by connecting the 5th node after the normally-closed contact of the second auxiliary relay; Be parallel with between the 5th node and the 7th node: the normally opened contact of A.C. contactor, the first button; Be parallel with between node and Section Point the 7th: the normally-closed contact of the first auxiliary relay of the solenoid of A.C. contactor, secondary signal lamp, series connection and the solenoid of the time relay, the normally opened contact of time relay timing closing of connecting and the solenoid of the first auxiliary relay, be also parallel with the normally opened contact of the first auxiliary relay at the normally opened contact two ends of Chuan Lian time relay timing closing;
Branch road two: the normally-closed contact of the A.C. contactor of serial connection and the first signal lamp;
Branch road three: the normally opened contact being parallel with three overload protection current relays between first node and the 13 node; Section Point is connect after the solenoid of 13 node by the second auxiliary relay;
Branch road four: the normally opened contact being parallel with three short-circuit protection current relays between first node and the 15 node; 15 node is by connecting Section Point after the shunt release of low-voltage circuit breaker;
The secondary side circuit of current transformer comprises: the solenoid of the second siding ring of three current transformers, the solenoid of three overload protection current relays, three normally-closed contacts of the first auxiliary relay, three short-circuit protection current relays, and it is that after following three branch circuit parallel connections, two-terminal-grounding forms closed-loop path that wiring is closed:
Branch road one: the second siding ring of current transformer, the solenoid of the first overload protection current relay in parallel and the normally-closed contact of the first auxiliary relay, the solenoid of the first short-circuit protection current relay;
Branch road two: the second siding ring of current transformer, the solenoid of the second overload protection current relay in parallel and the normally-closed contact of the first auxiliary relay, the solenoid of the second short-circuit protection current relay;
Branch road three: the second siding ring of current transformer, the solenoid of the 3rd overload protection current relay in parallel and the normally-closed contact of the first auxiliary relay, the solenoid of the 3rd short-circuit protection current relay.
Wherein: the first signal lamp is greensignal light, secondary signal lamp is red eye.
Wherein: the first button is wink ejector half starting button, and the second button is maintenance stop button.
Wherein: the time relay is the timing closing time relay, setting range 0-1000S.
A kind of method for controlling street lamps, it, based on above-mentioned streetlight control circuit, specifically comprises the following steps:
1., closed low circuit breaker, make major loop Low Voltage Circuit Breaker charged;
2., press the first button, make the normally-closed contact of fuse, the second button, the second auxiliary relay, the first button charged;
3., the solenoid of A.C. contactor is charged, and then the normally opened contact of A.C. contactor closes, and then the major loop of control circuit is charged, enter originate mode, the secondary side circuit of current transformer has starting current to pass through, and now, following two kinds of situations will occur simultaneously:
(1) three overload protection current relay can not action; Three short-circuit protection current relays can not action;
(2) solenoid of the time relay is charged;
4., through certain time delay, the time delay normally opened contact of the time relay closes, and then the solenoid of the first auxiliary relay is charged, and starting process terminates, and then the normally opened contact of the first auxiliary relay closes, the normally-closed contact of the first auxiliary relay opens; In the secondary side circuit of current transformer; electric current normal stream is through three overload protection current relays; now; three overload protection current relays and three short-circuit protection current relays all enter normal running status; can carry out overload protection and short-circuit protection to control circuit, major loop enters normal operating phase.
Preferably, after major loop enters normal operating phase, work as appearance:
During overload fault, three overload protection current relays disconnect current supply circuit by A.C. contactor;
During short trouble, three short-circuit protection current relays pass through the instantaneous breaking circuit breaker of shunt release of low-voltage circuit breaker.
Preferably, the operating current of three overload protection current relays is 1.25 times of equivalent loads of road lamp operating current.
Preferably, the operating current of three short-circuit protection current relays is set in the short-circuit current value being greater than starting current, being less than end equivalence loads of road lamp installation place.
Preferably, certain delay adjustments equals the starting time.
Preferably, certain time delay is 10 minutes.
Beneficial effect of the present invention
The present invention adopts two groups of current relays (three overload protection current relays, three short-circuit protection current relays); respectively the starting current of street lamp and running current are sampled; again by the combination with the time relay, auxiliary relay; starting process is avoided in realization, distribution loop is carried out to the function of short circuit and overload protection.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of streetlight control circuit of the present invention.
In figure: QF-low-voltage circuit breaker, KM-A.C. contactor, TA-current transformer, YO-shunt release, SB1-the first button, SB2-the second button, GL-the first signal lamp, RL-secondary signal lamp, FU-fuse, KA1-the first auxiliary relay, KA2-the second auxiliary relay, KT-time relay, KC1-the first overload protection current relay, KC2-the second overload protection current relay, KC3-the 3rd overload protection current relay, KC4-the first short-circuit protection current relay, KC5-the second short-circuit protection current relay, KC6-the 3rd short-circuit protection current relay.
Embodiment
Below in conjunction with embodiment, the invention will be further described, but protection scope of the present invention is not limited thereto:
Embodiment 1, a kind of streetlight control circuit, its major loop comprises low-voltage circuit breaker QF, A.C. contactor KM, current transformer TA, first button SB1, second button SB2, secondary signal lamp RL, first signal lamp GL, fuse FU, first auxiliary relay KA1, second auxiliary relay KA2, time relay KT, three overload protection current relay (KC1, KC2, KC3), three short-circuit protection current relay (KC4, KC5, and equivalent loads of road lamp KC6), described low-voltage circuit breaker QF, A.C. contactor KM, first siding ring and the equivalent loads of road lamp of current transformer TA are serially connected in live wire (L1 successively, L2, L3) with zero line N, between ground wire PE, live wire L1 is by connecting first node 1 after fuse FU, and zero line N connects Section Point 2, four branch roads below in parallel between first node 1 with Section Point 2:
Branch road one: first node 1 is by connecting the 3rd node 3 after the second button SB2; 3rd node 3 is by connecting the 5th node 5 after the normally-closed contact of the second auxiliary relay KA2; Be parallel with between the 5th node 5 and the 7th node 7: the normally opened contact of A.C. contactor KM, the first button SB1; Be parallel with between the 7th node 7 and Section Point 2: the normally-closed contact of the first auxiliary relay KA1 of the solenoid of A.C. contactor KM, secondary signal lamp RL, series connection and the solenoid of time relay KT, the normally opened contact of time relay KT timing closing of connecting and the solenoid of the first auxiliary relay KA1, be also parallel with the normally opened contact of the first auxiliary relay KA1 at the normally opened contact two ends of Chuan Lian time relay KT timing closing;
Branch road two: the normally-closed contact of the A.C. contactor KM of serial connection and the first signal lamp GL;
Branch road three: the normally opened contact being parallel with three overload protection current relays (KC1, KC2, KC3) between first node the 1 and the 13 node 13; 13 node 13 is by connecing Section Point 2 after the solenoid of the second auxiliary relay KA2;
Branch road four: the normally opened contact being parallel with three short-circuit protection current relays (KC4, KC5, KC6) between first node the 1 and the 15 node 15; 15 node 15 is by connecting Section Point 2 after the shunt release YO of low-voltage circuit breaker QF;
The secondary side circuit of current transformer TA comprises: the second siding ring (TAu, TAv, TAw) of three current transformer TA, the solenoid of three overload protection current relays (KC1, KC2, KC3), three normally-closed contacts of the first auxiliary relay KA1, the solenoid of three short-circuit protection current relays (KC4, KC5, KC6), and it is that after following three branch circuit parallel connections, two-terminal-grounding forms closed-loop path that wiring is closed:
Branch road one: the second siding ring TAu of current transformer TA, the first overload protection in parallel solenoid of current relay KC1 and the normally-closed contact of the first auxiliary relay KA1, the solenoid of the first short-circuit protection current relay KC4;
Branch road two: the second siding ring TAv of current transformer TA, the second overload protection in parallel solenoid of current relay KC2 and the normally-closed contact of the first auxiliary relay KA1, the solenoid of the second short-circuit protection current relay KC5;
Branch road three: the second siding ring TAw of current transformer TA, the 3rd the overload protection in parallel solenoid of current relay KC3 and the normally-closed contact of the first auxiliary relay KA1, the solenoid of the 3rd short-circuit protection current relay KC6.
Embodiment 2, a kind of streetlight control circuit as described in Example 1, the first signal lamp GL is greensignal light, and secondary signal lamp RL is red eye.
Embodiment 3, a kind of streetlight control circuit as described in Example 1, the first button SB1 is wink ejector half starting button, and the second button SB2 is maintenance stop button.
Embodiment 4, a kind of streetlight control circuit as described in Example 1, time relay KT is the timing closing time relay, setting range 0-1000S.
Embodiment 5, a kind of method for controlling street lamps, it, based on the streetlight control circuit described in embodiment 1, specifically comprises the following steps:
1., closed low circuit breaker (QF), make major loop Low Voltage Circuit Breaker (QF) charged;
2., press the first button (SB1), make the normally-closed contact of fuse (FU), the second button (SB2), the second auxiliary relay (KA2), the first button (SB1) charged;
3., the solenoid of A.C. contactor (KM) is charged, and then the normally opened contact of A.C. contactor (KM) closes, and then the major loop of control circuit is charged, enter originate mode, the secondary side circuit of current transformer (TA) has starting current to pass through, now, following two kinds of situations will occur simultaneously:
(1) because the normally-closed contact of first auxiliary relay (KA1) of Current Transformer Secondary lateral circuit remains closed, therefore starting current will not be had in the solenoid of three overload protection current relays (KC1, KC2, KC3) and pass through, therefore they can not action; Three short-circuit protection current relays (KC4, KC5, KC6) although solenoid in flow through starting current, because starting current is less than set action current value, therefore they can not action;
(2) solenoid of time relay KT is charged;
4., through certain time delay, the time delay normally opened contact of time relay KT closes, and then first the solenoid of auxiliary relay KA1 charged, starting process terminates, and then the normally opened contact of the first auxiliary relay KA1 closes, the normally-closed contact of the first auxiliary relay KA1 opens; In the secondary side circuit of current transformer TA; electric current normal stream through three overload protections with current relay (KC1, KC2, KC3); now; three overload protection current relays (KC1, KC2, KC3) and three short-circuit protection current relays (KC4, KC5, KC6) all enter normal running status; can carry out overload protection and short-circuit protection to control circuit, major loop enters normal operating phase.
Embodiment 6, a kind of method for controlling street lamps as described in Example 5, after major loop enters normal operating phase, work as appearance:
During overload fault, three overload protection current relays (KC1, KC2, KC3) disconnect current supply circuit by A.C. contactor KM;
During short trouble, three short-circuit protection current relays (KC4, KC5, KC6) are by shunt release (YO) the instantaneous breaking circuit breaker of low-voltage circuit breaker (QF).
Embodiment 7, a kind of method for controlling street lamps as described in Example 5, the operating current of three overload protection current relays (KC1, KC2, KC3) is 1.25 times of equivalent loads of road lamp operating current.
Embodiment 8, a kind of method for controlling street lamps as described in Example 5, the operating current of three short-circuit protection current relays (KC4, KC5, KC6) is set in the short-circuit current value being greater than starting current, being less than end equivalence loads of road lamp installation place.
Embodiment 9, a kind of method for controlling street lamps as described in Example 5, certain delay adjustments equals the starting time.
Embodiment 10, a kind of method for controlling street lamps as described in Example 5, certain time delay is 10 minutes.
Specific embodiment described herein is only illustrate spirit of the present invention.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (10)
1. a streetlight control circuit, it is characterized in that its major loop comprises low-voltage circuit breaker (QF), A.C. contactor (KM), current transformer (TA), first button (SB1), second button (SB2), secondary signal lamp (RL), first signal lamp (GL), fuse (FU), first auxiliary relay (KA1), second auxiliary relay (KA2), the time relay (KT), three overload protection current relay (KC1, KC2, KC3), three short-circuit protection current relay (KC4, KC5, and equivalent loads of road lamp KC6), described low-voltage circuit breaker (QF), A.C. contactor (KM), first siding ring and the equivalent loads of road lamp of current transformer (TA) are serially connected in live wire (L1 successively, L2, L3) with zero line (N), between ground wire (PE), live wire (L1) connects first node (1) afterwards by fuse (FU), zero line (N) connects Section Point (2), four branch roads below in parallel between first node (1) with Section Point (2):
Branch road one: first node (1) connects the 3rd node (3) afterwards by the second button (SB2); 3rd node (3) is by connecting the 5th node (5) after the normally-closed contact of the second auxiliary relay (KA2); Be parallel with between the 5th node (5) and the 7th node (7): the normally opened contact of A.C. contactor (KM), the first button (SB1); Be parallel with between the 7th node (7) and Section Point (2): the normally-closed contact of first auxiliary relay (KA1) of the solenoid of A.C. contactor (KM), secondary signal lamp (RL), series connection and the solenoid of the time relay (KT), the normally opened contact of the time relay (KT) timing closing of connecting and the solenoid of the first auxiliary relay (KA1), be also parallel with the normally opened contact of the first auxiliary relay (KA1) at the normally opened contact two ends of Chuan Lian the time relay (KT) timing closing;
Branch road two: the normally-closed contact of the A.C. contactor (KM) of serial connection and the first signal lamp (GL);
Branch road three: the normally opened contact being parallel with three overload protection current relays (KC1, KC2, KC3) between first node (1) and the 13 node (13); Section Point (2) is connect after the solenoid of 13 node (13) by the second auxiliary relay (KA2);
Branch road four: the normally opened contact being parallel with three short-circuit protection current relays (KC4, KC5, KC6) between first node (1) and the 15 node (15); 15 node (15) connects Section Point (2) afterwards by the shunt release (YO) of low-voltage circuit breaker (QF);
The secondary side circuit of current transformer (TA) comprising: the second siding ring (TAu, TAv, TAw) of three current transformers (TA), the solenoid of three overload protection current relays (KC1, KC2, KC3), three normally-closed contacts of the first auxiliary relay (KA1), the solenoid of three short-circuit protection current relays (KC4, KC5, KC6), and it is that after following three branch circuit parallel connections, two-terminal-grounding forms closed-loop path that wiring is closed:
Branch road one: the second siding ring (TAu) of current transformer (TA), the first overload protection in parallel solenoid of current relay (KC1) and the normally-closed contact of the first auxiliary relay (KA1), the solenoid of the first short-circuit protection current relay (KC4);
Branch road two: the second siding ring (TAv) of current transformer (TA), the second overload protection in parallel solenoid of current relay (KC2) and the normally-closed contact of the first auxiliary relay (KA1), the solenoid of the second short-circuit protection current relay (KC5);
Branch road three: the second siding ring (TAw) of current transformer (TA), the 3rd the overload protection in parallel solenoid of current relay (KC3) and the normally-closed contact of the first auxiliary relay (KA1), the solenoid of the 3rd short-circuit protection current relay (KC6).
2. a kind of streetlight control circuit according to claim 1, it is characterized in that the first signal lamp (GL) is greensignal light, secondary signal lamp (RL) is red eye.
3. a kind of streetlight control circuit according to claim 1, it is characterized in that the first button (SB1) is for wink ejector half starting button, the second button (SB2) is maintenance stop button.
4. a kind of streetlight control circuit according to claim 1, is characterized in that the time relay (KT) is for the timing closing time relay, setting range 0-1000S.
5. a method for controlling street lamps, is characterized in that it is based on streetlight control circuit according to claim 1, specifically comprises the following steps:
1., closed low circuit breaker (QF), make major loop Low Voltage Circuit Breaker (QF) charged;
2., press the first button (SB1), make the normally-closed contact of fuse (FU), the second button (SB2), the second auxiliary relay (KA2), the first button (SB1) charged;
3., the solenoid of A.C. contactor (KM) is charged, and then the normally opened contact of A.C. contactor (KM) closes, and then the major loop of control circuit is charged, enter originate mode, the secondary side circuit of current transformer (TA) has starting current to pass through, now, following two kinds of situations will occur simultaneously:
(1) three overload protection current relay (KC1, KC2, KC3) can not action; Three short-circuit protection current relays (KC4, KC5, KC6) can not action;
(2) solenoid of the time relay (KT) is charged;
4., through certain time delay, the time delay normally opened contact of the time relay (KT) closes, and then first the solenoid of auxiliary relay (KA1) charged, starting process terminates, and then the normally opened contact of the first auxiliary relay (KA1) normally-closed contact that is closed, the first auxiliary relay (KA1) is opened; In the secondary side circuit of current transformer (TA); electric current normal stream through three overload protections with current relay (KC1, KC2, KC3); now; three overload protection current relays (KC1, KC2, KC3) and three short-circuit protection current relays (KC4, KC5, KC6) all enter normal running status; can carry out overload protection and short-circuit protection to control circuit, major loop enters normal operating phase.
6. a kind of method for controlling street lamps according to claim 5, after it is characterized in that major loop enters normal operating phase, work as appearance:
During overload fault, three overload protection current relays (KC1, KC2, KC3) disconnect current supply circuit by A.C. contactor (KM);
During short trouble, three short-circuit protection current relays (KC4, KC5, KC6) are by shunt release (YO) the instantaneous breaking circuit breaker of low-voltage circuit breaker (QF).
7. a kind of method for controlling street lamps according to claim 5, is characterized in that the operating current of three overload protection current relays (KC1, KC2, KC3) is 1.25 times of equivalent loads of road lamp operating current.
8. a kind of method for controlling street lamps according to claim 5, is characterized in that the operating current of three short-circuit protection current relays (KC4, KC5, KC6) is set greater than starting current, is less than the short-circuit current value of end equivalence loads of road lamp installation place.
9. a kind of method for controlling street lamps according to claim 5, is characterized in that certain delay adjustments equals the starting time.
10. a kind of method for controlling street lamps according to claim 5, is characterized in that certain time delay is 10 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510591669.7A CN105120573B (en) | 2015-09-16 | 2015-09-16 | A kind of streetlight control circuit and control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510591669.7A CN105120573B (en) | 2015-09-16 | 2015-09-16 | A kind of streetlight control circuit and control method |
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| CN105120573A true CN105120573A (en) | 2015-12-02 |
| CN105120573B CN105120573B (en) | 2018-05-22 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201114941Y (en) * | 2007-09-10 | 2008-09-10 | 重庆鑫德勤环保节能开发有限公司 | Intelligent energy-saving street lamp control system |
| CN202535604U (en) * | 2012-04-20 | 2012-11-14 | 合肥兴东电器开关有限责任公司 | Streetlight control circuit |
| DE102011121070A1 (en) * | 2011-12-12 | 2013-06-13 | Martin Baier | Method for automatic switching off of lamp in basement and guest toilet, involves preventing consumption of energy by electronic controller, when lighting is eliminated |
| CN203181394U (en) * | 2013-01-24 | 2013-09-04 | 珠海市蓝德节能科技有限公司 | Gas discharge street lamp electricity-saving appliance |
| CN203775473U (en) * | 2014-03-03 | 2014-08-13 | 上海燎原宏力照明工程有限公司 | Power-saving control cabinet of intelligent street lamp |
| CN104066257A (en) * | 2014-07-15 | 2014-09-24 | 芜湖市政通市政工程有限责任公司 | Direct-current centralized power supply dimming system and method for public lighting |
| CN204157107U (en) * | 2014-08-22 | 2015-02-11 | 扬州新扬开关设备有限公司 | A kind of intelligent road-lamp control cabinet |
| CN205005311U (en) * | 2015-09-16 | 2016-01-27 | 中石化南京工程有限公司 | Streetlight control circuit |
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2015
- 2015-09-16 CN CN201510591669.7A patent/CN105120573B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201114941Y (en) * | 2007-09-10 | 2008-09-10 | 重庆鑫德勤环保节能开发有限公司 | Intelligent energy-saving street lamp control system |
| DE102011121070A1 (en) * | 2011-12-12 | 2013-06-13 | Martin Baier | Method for automatic switching off of lamp in basement and guest toilet, involves preventing consumption of energy by electronic controller, when lighting is eliminated |
| CN202535604U (en) * | 2012-04-20 | 2012-11-14 | 合肥兴东电器开关有限责任公司 | Streetlight control circuit |
| CN203181394U (en) * | 2013-01-24 | 2013-09-04 | 珠海市蓝德节能科技有限公司 | Gas discharge street lamp electricity-saving appliance |
| CN203775473U (en) * | 2014-03-03 | 2014-08-13 | 上海燎原宏力照明工程有限公司 | Power-saving control cabinet of intelligent street lamp |
| CN104066257A (en) * | 2014-07-15 | 2014-09-24 | 芜湖市政通市政工程有限责任公司 | Direct-current centralized power supply dimming system and method for public lighting |
| CN204157107U (en) * | 2014-08-22 | 2015-02-11 | 扬州新扬开关设备有限公司 | A kind of intelligent road-lamp control cabinet |
| CN205005311U (en) * | 2015-09-16 | 2016-01-27 | 中石化南京工程有限公司 | Streetlight control circuit |
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| CN105120573B (en) | 2018-05-22 |
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