Panasonic LK-T User Manual

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Page 1

SLIM POWER RELAY

WITH HIGH INRUSH

CURRENT CAPABILITY

TV-8 CERTIFIED

LK-T

LK-T RELAYS

24.0

.945

11.0

.433

25.0

.984

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

SPECIFICATIONS

Contact

Arrangement 1 Form A Initial contact resistance

(By voltage drop 6 V DC 1 A) Contact material AgSnO2 type

Nominal switching capacity

Rating (resistive load)

Expected life (min. operations)

Max. switching power 1,385 V A Max. switching voltage 277 V AC Max. switching current 8 A (120V AC) Min. switching capacity

(Reference value) Mechanical (at 180 cpm) 10 Electrical (at 20 cpm)

(at rated load)

Coil

Nominal operating power 250 mW

#1 This value can change due to the switching frequency , environment al conditions,

and desired reliability level, therefore it is recommended to check this with the actual load.

Remarks

*1Measurement at same location as “Initial breakdown voltage” section.

Detection current: 10mA

Wave is standard shock voltage of ±1.2 × 50μs according to JEC-212-1981

Excluding contact bounce time.

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

Half-wave pulse of sine wave: 6 ms

Detection time: 10 μs

The upper operation ambient temperature limit is the ma ximum t emperature t hat

can satisfy the coil temperature rise value. Refer to 1. Usage, transport and storage conditions in NOTES on page 3.

Max. 100 mΩ

5 A 277 V AC

100 mA, 5 V DC

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

Characteristics

Max. operating speed 20 cpm (at rated load) Initial insulation resistance*

Initial *2 breakdown voltage

Initial surge voltage between contact and coil*

Operate time* (at nominal voltage)

Release time (without diode)* (at nominal voltage)

Temperature rise (at 70°C)

Shock resistance

Vibration resistance

Conditions for operation, transport and storage* (Not freezing and condensing at low temperature)

Unit weight Approx. 12 g .42 oz

Between open contacts

Between contact and coil

Functional* Destructive*

Functional*

Destructive

Ambient temp.

Humidity 5 to 85% R.H. Air

pressure

Min. 1,000 MΩ (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/s2{approx. 20 G}

1,000 m/s2{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

86 to 106 kPa

TYPICAL APPLICATIONS

• Audio visual equipment

• Flat TVs and audio equipment, etc.

• Office equipment

• Home appliances

ds_61113_0004_en_lkt: 091008J

ORDERING INFORMATION

Ex. LKT 1a F 12V

Contact arrangement Protective construction Coil voltage(DC)

1a: 1 Form A F: Flux-resistant type 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.

Page 2

LK-T

2-0.9 dia. 2-1.3 dia.

TYPES AND COIL DATA (at 20°C 68°F)

Drop-out

voltage,

V DC (min.)

(Initial)

Coil resistance,

Ω (±10%)

Part No.

Nominal voltage,

V DC

Pick-up voltage,

V DC (max.)

(Initial)

LKT1aF-5V 5 (Initial) 3.5 (Initial) 0.5 100 50 250 6.5 LKT1aF-9V 9 (Initial) 6.3 (Initial) 0.9 324 27.8 250 11.7 LKT1aF-12V 12 (Initial) 8.4 (Initial) 1.2 576 20.8 250 15.6 LKT1aF-24V 24 (Initial) 16.8 (Initial) 2.4 2,304 10.4 250 31.2

DIMENSIONS

Max. 25.0

.984

0.5

.020

0.4

.016

1.0

.039

7.5

.295

.157

Max. 11.0

.433

Dimension: General tolerance Max. 1mm .039 inch: ±0.1 ±.004 1 to 3mm .039 to .118 inch: ±0.2 ±.008 Min. 3mm .118 inch: ±0.3 ±.012

0.5 dia.

.020 dia.

1.65

.065

0.3

.012

Max. 24.0

.945

16.5

.650

20.0

.787

Nominal

operating

current, mA

(±10%)

Nominal

operating power,

PC board pattern (Bottom view)

-.035 dia. 2-.051 di

16.5

.650

20.0

.787

Tolerance: ±0.1 ±.004

Schematic (Bottom view)

Maximum

allowable

voltage, V DC

(at 20°C 68°F)

mm inch

7.5

.295

REFERENCE DATA

1. Max. switching power (AC resistive load) 2. Coil temperature rise

100

Contact current, A

0 10 100

Contact voltage, V

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:

Contact welding detection

277V AC

12V DC

and Miscontacting detection circuit

Sample: LKT1aF-12V, 6 pcs. Point measured: coil inside Contact current: 0 A, 5A

Temperature rise, °C

Change of pick-up and drop-out voltage Change of contact resistance

Pick-up and drop-out voltage, V

800

100 120

Coil applied voltage, %V

Pick-up voltage

Drop-out voltage

510

No. of operations, ×10

20°C 5A 20°C 0A

70°C 5A 70°C 0A

Max. x

Min.

Max. x Min.

3. Ambient temperature characteristics and coil applied voltage

500

400

300

200

Coil applied voltage, %V

100

Contact resistance, mΩ

Allowable ambient temperatures against % coil voltages (max. inside the coil temperature set as 115°C

0 1020304050607080

239°F)

Carrying current: 5

Coil & contact no carrying current

Pick-up voltage

Ambient temperature, °C

105

No. of operations, ×10

Max.

Min.

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Page 3

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 (cosφ = 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.

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

Tolerance range

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

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.

(Avoid condensation when used at temperatures higher

32°F)

than 0°C 32°F)

070-40

+32 +158-40

Temperature, °C °F

Change of pick-up and drop-out voltage Change of contact resistance

Pick-up and drop-out voltage, V

025

Pick-up voltage

Drop-out voltage

No. of operations, ×10

Max. x Min.

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 COSφ = 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) T o 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

Contact resistance, mΩ

No. of operations,

4) The cycle lifetime is defined under the standard test condition specified in the JIS* C 5442 standard (temperature 15 to

°C 59 to 95°F, humidity 2 5 to 75%).

35 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 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.

voltage below 5%.

LK-T

Max. x Min.

×10

3 is formed. This

For Cautions for Use, see Relay Technical Information.

ds_61113_0004_en_lkt: 091008J