Ds-112 time relay

brand ： Shanghai Joseph

name ： Electromagnetic time relay

model ：DS-112

Working voltage ：24,48,110,220V

Return time ：≤20mS

Delay range ：0.125~20S

Contact capacity ：250V5A

Power consumption ：≤25W

DS-111 Time relay ;DS-112 Time relay ;

DS-113 Time relay ;DS-111C Time relay ;

DS-112C Time relay ;DS-113C Time relay ;

DS-114 Time relay ;DS-115 Time relay ;

DS-116 Time relay ;DS-112 Time relay

One 、 purpose
Time relay DS-113（ Hereinafter referred to as relay ） As an auxiliary component, it is used in various protection and automatic devices , Make the controlled element reach the required time delay , It is used in the protection device to realize the selective cooperation between the main protection and the backup protection .

Two 、 Structure and principle

1、 This relay is a clock delay mechanism driven by an electromagnet , Electromagnets can be powered by DC or AC power , The AC time relay in this series is internally equipped with a bridge rectifier , Supply the electromagnet after rectifying the power supply . There are two pairs of instantaneous transfer contacts in each relay , A pair of delay main contacts （ Termination contact ）, According to different specifications , A pair of sliding delay contacts can be installed , Its delay setting value , It can be equal to or less than the setting value of the delay main contact ; The relay is installed and wired in different ways , The same movement can have

Two structural forms , namely A11H Install wiring for projection , The relay cover can be equipped with a drag pin , To indicate relay action ,（ The model in the specification sheet is followed by X Of is the specification with drag needle ） For the convenience of maintenance, there is a plug-in inside the relay , The relay can be partially pulled out after removing the cover .

When the relay does not act , The instantaneous change-over contact is closed , The time delay contact is open , Drag the needle to zero , When power is supplied to the electromagnet , The electromagnet is engaged , Instantaneous change-over contact for instantaneous switching , The clock mechanism starts to rotate , The delay moving contact moves in the closing direction , At the same time, it drives the dragging needle to move , According to the setting of the delay contact, the sliding contact and the main contact are connected successively , After the main contact is connected, the rotation of the mechanism is limited due to the stop , The mechanism stops , The relay can stay in the closed state of the main contact for a long time , When the power supply is switched off, all contacts instantly return to the original state , Drag the needle and leave it there , The indicated value shall conform to the setting value of the main contact ,（ In fact, the indicated value of the dragging needle should be slightly larger than the setting value of the main contact , Because the contact can still slide for a certain distance after being connected , In addition, when the power supply is not finished in the delay, it will be powered off , Then the time indicated by the dragging needle is completely equal to the time delay generated by the moving contact , Therefore, the dragging needle can indicate the reset time of the relay , Easy to analyze problems ） The dragging needle can be easily reset outside the relay , Turn the knob on the cover clockwise , First, the dragging needle touches the moving contact and stops , Continue to turn the knob , Align the zero position on the dial with the drag needle .

2、 The internal wiring diagram of the relay is shown in Figure 1.

3、 The action voltage of DC relay is not greater than 70% Rated voltage , The action voltage of AC relay is not greater than 85% Rated voltage , The return voltage is not less than 5% Rated voltage .

4、 Error of relay delay ：（ Referring to 20±5℃ when 10 In the second action , The difference between large and small values ）

DS-31,DS-31C,DS-35,DS-35C by 0.06s.

DS-32,DS-32C,DS-36,DS-36C by 0.125s.

DS-33,DS-33C,DS-37,DS-37C by 0.25s.

DS-34,DS-34C,DS-38,DS-38 by 0.5s

5、 Power consumption of relay coil at rated voltage

For DC short-time operation ：DS-31,DS-32,DS-33,DS-34 No more than 25W.

For DC long-term operation ：DS-31C,DS-32C,DS-33C,DS-34 No more than 15W.

For short-term communication ：DS-35,DS-36,DS-37,DS-38 No more than 20VA.

For short-term communication ：DS-35C,DS-36C,DS-37C,DS-38C No more than 20VA.

6、 Thermal stability

For AC / DC short-term operation , The coil can bear 110% Rated voltage , It takes two minutes , Its temperature rise shall not be greater than 65℃.

For DC and AC long-term operation , coil （ Through additional resistance ） Can bear for a long time 110% Rated voltage , Its temperature rise shall not be greater than 65℃.

7、 Each contact of the relay disconnects the inductive load 50W.（U No more than 220V,I No more than 1A,T Less than 5ms）.

8、 The relay contacts can close the current for a long time 5A.

9、 The insulation strength of the live part of the relay to the magnet can withstand AC 50Hz,2KV, after 1min Without breakdown .

10、 The relay works 5000 Times without mechanical damage .

11、 Temperature range of relay ：-20~+40℃.

3、 ... and 、 Technical data

1、 Relay model description

example ：DS-112;DS-23;DS-33C

among ：DS Indicates electromagnetic time relay .

31-38 Is the design serial number , And use its second digit to indicate the range of delay , And the type of power supply （1-4 It refers to four delay ranges and represents DC power supply ,5-8 To express with 1-4

Same delay range , But for AC power ）.

/2 Indicates that there is a sliding delay contact .

/X Indicates that there is a drag needle .（ See table 1）

11K Indicates embedded installation , Rear wiring

The above example is ： The embedded , The delay of rear wiring is 0.125-1.25s, Long term work , Time relay with sliding delay contact and dragging needle （ The model cannot indicate the voltage specification, so

When ordering, please indicate the rated voltage ）.

2、 Coil resistance value （ See table 2）

3、 weight ：1Kg.

Four 、 Use and maintenance

1、 Users should pay attention to the rated working mode of the relay , If the relay that works for a short time is used for the occasion that the coil circuit is charged for a long time , Then the relay coil is overheated and damaged .

The long-term working relay has external resistance , When in use, it should be in accordance with the attached drawings Rf Location access .

2、 The relay shall be installed on the vertical panel of the horizontal plane , And before putting into operation, the relay should be energized . So as not to return to the original position due to various operating parts , And cause delay error .

3、 The relay is in maintenance , All parts of the clock mechanism should be cleaned with aviation gasoline , Then in each movable part （ Sliding contact part ） Click to live 4# Aviation instrument oil , Apply low-temperature grease between the cam directly driven by the electromagnet and the sector toothed plate . Electromagnetic part , The moving core and coil tube should be wiped and cleaned .

5、 ... and 、 Outline and opening size

DS-112

The time relay adopts A11 Shell , See attached figure .

Ordering instructions

Please indicate the relay model when ordering 、 specifications 、 Number 、 Rated voltage or current of power supply 、 Structure type code and special requirements

Electromagnetic time relay

The principle of slow attenuation of magnetic flux after the electromagnetic coil is cut off , Delay the release of the armature of the magnetic system , So as to obtain the delayed action of the contact . It is characterized by large contact capacity , Therefore, the control capacity is large . But the delay time range is small , The accuracy is slightly poor . So it is mainly used for the control of DC circuit .

Specializing in the production of relays 、 Power meter 、 Microcomputer integrated protection device 、 Motor protector 、 Power automation integrated control system and other products . About microcomputer protection device 、 Relay 、 Power meter 、 Price of products such as power automation system 、 Technical parameters …

Shanghai Joseph relay business department