Panasonic LK-T Relays Switch User manual

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Panasonic LK-T Relays Switch User manual | Manualzz

24.0

.945

11.0

.433

25.0

.984

LK-T

SLIM POWER RELAY

WITH HIGH INRUSH

CURRENT CAPABILITY

TV-8 CERTIFIED

LK-T RELAYS

FEATURES

1. High inrush current capability

1) Operating load capability: inrush 118 A, steady 8 A

2) UL/C-UL TV-8 approved

2. High insulation resistance

1) Creepage distance and clearances between contact and coil: Min. 6 mm .236 inch (In compliance with IEC65)

2) Surge withstand voltage between contact and coil: 10,000 V or more

3. High noise immunity realized by the card separation structure between contact and coil

4. Conforms to the various safety standards

UL, C-UL, TÜV, and SEMKO approved

SPECIFICATIONS

Contact

Arrangement

Initial contact resistance

(By voltage drop 6 V DC 1 A)

Contact material

Rating

(resistive load)

Nominal switching capacity

Max. switching power

Max. switching voltage

Expected life

(min. operations)

Max. switching current

Min. switching capacity #1

(Reference value)

Mechanical (at 180 cpm)

Electrical (at 20 cpm)

(at rated load)

1 Form A

Max. 100 m

Ω

AgSnO

2

type

5 A 277 V AC

1,385 V A

277 V AC

8 A (120V AC)

100 mA, 5 V DC

10 6

10 5

Coil

Nominal operating power 250 mW

#1 This value can change due to the switching frequency, environmental conditions, and desired reliability level, therefore it is recommended to check this with the actual load.

Remarks

* 5

* 6

* 7

* 8

* 1

* 2

* 3

* 4

Measurement at same location as “Initial breakdown voltage” section.

Detection current: 10mA

Wave is standard shock voltage of

±

1.2

×

50

μ s according to JEC-212-1981

Excluding contact bounce time.

Half-wave pulse of sine wave: 11 ms; detection time: 10

μ s

Half-wave pulse of sine wave: 6 ms

Detection time: 10

μ s

The upper operation ambient temperature limit is the maximum temperature that can satisfy the coil temperature rise value. Refer to 1. Usage, transport and

storage conditions in NOTES on page 3.

TYPICAL

APPLICATIONS

• Audio visual equipment

• Flat TVs and audio equipment, etc.

• Office equipment

• Home appliances

Characteristics

Max. operating speed

Initial insulation resistance* 1

Initial * 2 breakdown voltage

Between open contacts

Between contact and coil

Initial surge voltage between contact and coil* 3

Operate time* 4

(at nominal voltage)

Release time (without diode)* 4

(at nominal voltage)

Temperature rise (at 70

°

C)

Shock resistance

Functional* 5

Destructive* 6

Functional* 7

Vibration resistance

Destructive

Conditions for operation, transport and storage* 8

(Not freezing and condensing at low temperature)

Ambient temp.

Humidity

Air pressure

Unit weight

20 cpm (at rated load)

Min. 1,000 M

Ω

(at 500 V DC)

1,000 Vrms for 1 min.

4,000 Vrms for 1 min.

10,000 V

Max. 15ms (at 20

°

C 68

°

F )

Max. 5ms (at 20

°

C 68

°

F )

Max. 35

°

C with nominal coil voltage and at 5 A contact carrying current

(resistance method)

200 m/s 2 {approx. 20 G}

1,000 m/s 2 {approx. 100 G}

10 to 55Hz at double amplitude of 1.5mm

10 to 55Hz at double amplitude of 1.5mm

–40

°

C to +70

°

C

–40

°

F to +158

°

F

5 to 85% R.H.

86 to 106 kPa

Approx. 12 g .42 oz

ORDERING INFORMATION

Ex. LKT 1a F 12V

Contact arrangement

1a: 1 Form A

Protective construction

F: Flux-resistant type

Coil voltage(DC)

5, 9, 12, 24V

UL/C-UL, TÜV, SEMKO, TV-8 approved type is standard.

Notes: 1. Standard packing Carton: 100 pcs. Case: 500 pcs.

2. 3 V, 6 V, and 18 V DC types are also available. Please consult us for details.

ds_61113_0004_en_lkt: 091008J 1

2

LK-T

TYPES AND COIL DATA (at 20

°

C

68

°

F

)

Part No.

LKT1aF-5V

LKT1aF-9V

LKT1aF-12V

LKT1aF-24V

Nominal voltage,

V DC

5

9

12

24

Pick-up voltage,

V DC (max.)

(Initial)

(Initial) 3.5

(Initial) 6.3

(Initial) 8.4

(Initial) 16.8

Drop-out voltage,

V DC (min.)

(Initial)

(Initial) 0.5

(Initial) 0.9

(Initial) 1.2

(Initial) 2.4

DIMENSIONS

0.5 dia.

.020 dia.

1.65

.065

0.3

.012

Max. 24.0

.945

16.5

.650

20.0

.787

Coil resistance,

Ω

(

±

10%)

100

324

576

2,304

Nominal operating current, mA

(

±

10%)

50

27.8

20.8

10.4

Nominal operating power, mW

250

250

250

250

Maximum allowable voltage, V DC

(at 20

°

C 68

°

F )

6.5

11.7

15.6

31.2

mm inch

Max. 25.0

.984

0.5

.020

4

.157

0.4

.016

1.0

.039

7.5

.295

Max. 11.0

.433

Dimension:

Max. 1mm .039 inch :

General tolerance

±

0.1

±

.004

1 to 3mm .039 to .118 inch :

±

0.2

±

.008

Min. 3mm .118 inch :

±

0.3

±

.012

PC board pattern (Bottom view)

2-0.9 dia.

2-.035 dia.

16.5

.650

2-1.3 dia.

2-.051 dia.

20.0

.787

Tolerance:

±

0.1

±

.004

Schematic (Bottom view)

7.5

.295

REFERENCE DATA

1. Max. switching power (AC resistive load)

100

10

5

1

0 10 100

Contact voltage, V

2. Coil temperature rise

Sample: LKT1aF-12V, 6 pcs.

Point measured: coil inside

Contact current: 0 A, 5A

30

25

20

15

10

5

0

0 80 100 120

Coil applied voltage, %V

20 ° C 5A

20 ° C 0A

70

70

°

°

C 5A

C 0A

3. Ambient temperature characteristics and coil applied voltage

500

400

300

Allowable ambient temperatures against % coil voltages

(max. inside the coil temperature set as 115 ° C 239 ° F )

Carrying current: 5A

200

Coil & contact no carrying current

100

Pick-up voltage

0

0 10 20 30 40 50 60 70 80

Ambient temperature, ° C

4-(1). Electrical life test

(5 A 277 V AC, resistive load)

Sample: LKT1aF-12V, 6 pcs.

Operation frequency: 20 times/min.

(ON/OFF = 1.5s: 1.5s)

Ambient temperature: 20

°

C 68

°

F

Circuit:

277V AC

12V DC

Contact welding detection and Miscontacting detection circuit

Change of pick-up and drop-out voltage

12

10

8

Pick-up voltage

Max.

x

Min.

6

4

2

Drop-out voltage

0

0 5

No. of operations, × 10 4

10

Max.

x

Min.

Change of contact resistance

35

30

25

20

15

50

45

40

10

5

0

0 5

No. of operations, × 10 4

Max.

x

10

Min.

ds_61113_0004_en_lkt: 091008J

4-(2). Electrical life test

(UL508 TV-8 rating test)

Sample: LKT1aF-12V, 6 pcs.

• Overload test

Load: 12 A 120 V AC (60 Hz),

Inductive load (cos

φ

= 0.75)

Operation frequency: 6 times/min

(ON : OFF = 1 s : 9 s)

No. of operations: 50 ope.

• Endurance test

Load: 8A 120 V AC (960 W lamp load),

(Inrush: 118 A)

Operation frequency: 1 times/min

(ON: OFF = 1 s: 59 s)

No. of operations: 25,000 ope.

Change of pick-up and drop-out voltage

12

10

Pick-up voltage

8

6

4

Max.

x

Min.

Drop-out voltage

2

0

0 25

Max.

x

Min.

No. of operations, × 10 3

LK-T

Change of contact resistance

35

30

25

20

15

50

45

40

10

5

0

0

No. of operations, × 10 3

25

Max.

x

Min.

NOTES

1. Usage, transport and storage conditions

1) Temperature:

–40 to +70

°

C –40 to +158

°

F

2) Humidity: 5 to 85% RH

(Avoid freezing and condensation.)

The humidity range varies with the temperature. Use within the range indicated in the graph below.

3) Atmospheric pressure: 86 to 106 kPa

Temperature and humidity range for usage, transport, and storage

Humidity, %RH

85

Tolerance range

(Avoid freezing when used at temperatures lower than 0 ° C 32 ° F )

5

(Avoid condensation when used at temperatures higher than 0 ° C 32 ° F )

-40

-40

0

+32

Temperature, ° C ° F

70

+158

4) Condensation

Condensation forms when there is a sudden change in temperature under high temperature and high humidity conditions. Condensation will cause deterioration of the relay insulation.

5) Freezing

Condensation or other moisture may freeze on the relay when the temperatures is lower than 0

°

C 32

°

F .

This causes problems such as sticking of movable parts or operational time lags.

6) Low temperature, low humidity environments

The plastic becomes brittle if the relay is exposed to a low temperature, low humidity environment for long periods of time.

2. Solder and cleaning conditions

1) Please obey the following conditions when soldering automatically.

(1) Preheating: Within 120

°

C 248

°

F

(solder surface terminal portion) and within 120 seconds

(2) Soldering iron: 260

°

C

±

5

°

C

500

°

F

±

41

°

F (solder temperature) and within 6 seconds (soldering time)

2) Since this is not a sealed type relay, do not clean it as is. Also, be careful not to allow flux to overflow above the PC board or enter the inside of the relay.

3. Certification

1) This relay is UL and C-UL certified

(File No. E43149).

UL, C-UL rating: TV-8

2) This relay is certified by TUV as an electromagnetic relay that complies with

VDE0435 (File No. B040413461035).

(1) TUV rating: 8A, 250 V to COS

φ

= 1.0

(2) The terminals of this relay can only be connected with solder.

(3) This relay is certified by SEMKO (File

No. 400968).

SEMKO rating: 3/100A 250 V AC, 5/40A

250 V AC

4. Others

1) For precautions regarding use and explanations of technical terminology, please refer to “Relay Technical

Information”.

2) To ensure good operation, please keep the voltage on the coil ends to

±

5% (at

20

°

C 68

°

F ) of the rated coil operation voltage. Also, please be aware that the pick-up voltage and drop-out voltage may change depending on the temperature and conditions of use.

3) Keep the ripple rate of the nominal coil voltage below 5%.

4) The cycle lifetime is defined under the standard test condition specified in the

JIS* C 5442 standard (temperature 15 to

35

°

C 59 to 95

°

F , humidity 25 to 75%).

Check this with the real device as it is affected by coil driving circuit, load type, activation frequency, activation phase,ambient conditions and other factors.

Also, be especially careful of loads such as those listed below.

(1) When used for AC load-operating and the operating phase is synchronous.

Rocking and fusing can easily occur due to contact shifting.

(2) High-frequency load-operating

When high-frequency opening and closing of the relay is performed with a load that causes arcs at the contacts, nitrogen and oxygen in the air is fused by the arc energy and HNO

3

is formed. This can corrode metal materials.

Three countermeasures for these are listed here.

• Incorporate an arc-extinguishing circuit.

• Lower the operating frequency

• Lower the ambient humidity

5) Heat, smoke, and even a fire may occur if the relay is used in conditions outside of the allowable ranges for the coil ratings, contact ratings, operating cycle lifetime, and other specifications.

Therefore, do not use the relay if these ratings are exceeded.

6) If the relay has been dropped, the appearance and characteristics should always be checked before use.

7) Incorrect wiring may cause unexpected events or the generation of heat or flames.

For Cautions for Use, see Relay Technical Information .

ds_61113_0004_en_lkt: 091008J 3

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Frequently Answers and Questions

What are the voltage and current ratings for the LK-T Relays?
The voltage ratings for the LK-T Relays are 5V, 9V, 12V, and 24V DC. The current rating is 8A (120V AC), and the maximum switching current is 118A.
What is the maximum switching power for the LK-T Relays?
The maximum switching power for the LK-T Relays is 1,385 VA.
What is the initial insulation resistance for the LK-T Relays?
The initial insulation resistance for the LK-T Relays is 1,000 MΩ (at 500 V DC).
What is the maximum operating speed for the LK-T Relays?
The maximum operating speed for the LK-T Relays is 20 cpm (at rated load).
What is the ambient temperature range for the LK-T Relays?
The ambient temperature range for the LK-T Relays is -40°C to +70°C (-40°F to +158°F).
What certifications do the LK-T Relays have?
The LK-T Relays have UL, C-UL, TÜV, and SEMKO certifications.

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