HE1AN-P-DC12V-Y5

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## Power relays ( Over 2 A ) HE RELAYS PV Type 

Product Catalog 

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2022.4 

## **Power relays (Over 2 A)** 

## **HE[RELAYS PV Type]** 

## **Compact size,1 Form A 35 A/48 A/90 A Power relays for solar inverter** 

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Protective construction：Flux-resistant type P FEATURES o<br>38 33 e High capacity and compact size<br>_ [ee] 35 A/48 A type:  W (38 mm) × L (33 mm) × H (36.3 mm)<br>90 A type:  W (38 mm) × L (33 mm) × H (38.8 mm)<br>}<br>36.3 . Contact GAP (compliant with VDE0126)<br>|e Contributes to energy saving in devices thanks to reduced coil hold voltage<br>e High insulation:  10,000 V surge withstand voltage<br>(between contact and coil)<br>38 33 35A type 38 33 Conforms to various safety standards: UL/C-UL,<br>—<z a —-_~ CSA, VDE<br>T 36.3 —— 38.8 ° TYPICAL APPLICATIONS<br>| I P Inverter (Solar and industrial) o<br>im - UPS<br>e Stationary charging stand<br>48A type 90A type （Unit：mm）<br>**----- End of picture text -----**<br>


## Lo **DETAILS FEATURES** 

~~=a~~ **Compact size Coil hold voltage* reduction can reduce consumption** Due to improved conduction efficiency, wide terminal blades **power.** are used (for 48 A and 90 A type) Coil hold voltage can be reduced down 40% of the rated coil 

Coil hold voltage can be reduced down 40% of the rated coil voltage. This is equal to operating power of approximately 310 mW. 

- Coil hold voltage is the coil voltage after 100ms following application of the rated coil voltage. 

Note: 48 A type 

## ~~=~~ **Contact GAP** 

Compliant with European photovoltaic standard (VDE0126) Compliant with EN61810-1 2.5k V surge withstand voltage (between contacts) 

|Type|Contact GAP|
|---|---|
|35A/48A|2.5mm|
|90A|3mm|



Panasonic Industry Co., Ltd. Electromechanical Control Business Division industrial.panasonic.com/ac/e/ 

ASCTB101E   202204 

ー 1 ー 

Panasonic Industry Co., Ltd. 2022 

Power relays (Over 2 A) HE RELAYS PV Type 

## **ORDERING INFORMATION (PART NO. : Ordering part number for Japanese market)** 

**AHE 2** Terminal shape Rated coil voltage（DC） Contact material X：Blade terminal type / Wide blade terminal type Part number 0 1 2 5 N ：AgNi 9：PC board terminal type Rated coil voltage (V) 6 12 24 9 Nil：AgSnO2 Operate voltage 2：70％ of Rated voltage Type, contact material and switching capacity Y5 ：PV type, AgNi type（1 Form A 48A） H18：PV type, AgSnO2 type（1 Form A 35A） Y6 ：PV type, AgNi type（1 Form A 90A） 

## **ORDERING INFORMATION (TYPE NO. : Ordering part number for non Japanese market)** 

**HE 1a N DC** Operate voltage Rated coil voltage（DC） N : 70％ of Rated voltage 6, 9, 12, 24V Contact arrangement Terminal shape Type, contact material and switching capacity 1a：1 Form A（Single side stable type） P：PC board terminal type/ Y5 ：PV type, AgNi type（1 Form A 48A） Blade terminal type H18：PV type, AgSnO2 type（1 Form A 35A） W：Wide blade terminal type Y6 ：PV type, AgNi type（1 Form A 90A） 

## **TYPES** 

- " Type No. " is ordering part number for non Japanese market. " Part No. " is ordering part number for Japanese market. 

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Standard packing<br>Type Rated coil voltage Type No. Part No.<br>Inner carton Outer carton<br>6 V DC HE1aN-P-DC6V-H18 AHE4290<br>9 V DC HE1aN-P-DC9V-H18 AHE4295<br>35 A<br>12 V DC HE1aN-P-DC12V-H18 AHE4291<br>24 V DC HE1aN-P-DC24V-H18 AHE4292<br>6 V DC HE1aN-P-DC6V-Y5 AHE32X0N<br>9 V DC HE1aN-P-DC9V-Y5 AHE32X5N<br>48 A 25 pcs. 100 pcs.<br>12 V DC HE1aN-P-DC12V-Y5 AHE32X1N<br>24 V DC HE1aN-P-DC24V-Y5 AHE32X2N<br>6 V DC HE1aN-W-DC6V-Y6 AHE52X0N<br>9 V DC HE1aN-W-DC9V-Y6 AHE52X5N<br>90 A<br>12 V DC HE1aN-W-DC12V-Y6 AHE52X1N<br>24 V DC HE1aN-W-DC24V-Y6 AHE52X2N<br>**----- End of picture text -----**<br>


*35 A 6 V, 12 V and 24 V DC type:  Certified by UL/C-UL (35 A 9 V type:  Certified by UL/C-UL and VDE) 

## **RATING** 

## **Coil data** 

- Operating characteristics such as ‘Operate voltage’ and ‘Release voltage’ are influenced by mounting conditions, ambient temperature, etc. 

Therefore, please use the relay within ±5% of rated coil voltage. 

- ‘Initial’ means the condition of products at the time of delivery. 

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Rated coil voltage Operate voltage* (at 20°C) Release voltage* (at 20°C) Rated operating (±10%, at current20°C) (±Coil resistance 10%, at 20°C) Rated operating power Max. allowable (at voltage20°C)<br>6 V DC 320 mA 18.8 Ω<br>9 V DC Max. 70% V of  Min. 10% V of  213 mA 42.2 Ω 110% V of rated<br>rated coil voltage  rated coil voltage  1,920 mW<br>12 V DC (Initial) (Initial) 160 mA 75 Ω coil  voltage<br>24 V DC 80 mA 300 Ω<br>**----- End of picture text -----**<br>


*square, pulse drive 

Panasonic Industry Co., Ltd. Electromechanical Control Business Division industrial.panasonic.com/ac/e/ 

> Panasonic Industry Co., Ltd. 2022 ASCTB101E   202204 

ー 2 ー 

Power relays (Over 2 A) HE RELAYS PV Type 

## **Specifications** 

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Specifications<br>Item<br>35 A type 48 A type 90 A type<br>Contact arrangement 1 Form A<br>Contact resistance  Max. 10 mΩ<br>(initial) Max. 100 mΩ (by voltage drop 6 V DC 1 A) (by voltage drop 5 V DC 20 A)<br>Contact material AgSnO2 type AgNi type<br>Contact rating  35 A 490 V AC, 35 A 48 V DC 48 A 490 V AC, 48 A 48 V DC 60 A 490 V AC, 90 A 60 V DC<br>(resistive)<br>Contact data<br>Max. switching power (resistive) 17,150 VA, 1,680 W 23,520 VA, 2,304 W 29,400 VA, 5,400 W<br>Max. switching voltage 490 V AC, 48 V DC 490 V AC, 60 V DC<br>Max. switching current 35 A 48 A 90 A<br>Min. switching load 100 mA 5 V DC<br>(reference value) * [1]<br>Insulation resistance (initial) Min. 1,000 MΩ (at 500 V DC, Measured portion is the same as the case of dielectric strength.)<br>Dielectric  Between open contacts 2,000 Vrms for 1 min (detection current: 10 mA)<br>strength  Between contact and<br>(initial) coil 5,000 Vrms for 1 min (detection current: 10 mA)<br>Surge<br>withstand  Between contact and<br>voltage  coil 10,000 V<br>(initial)* [2]<br>40 to 100% V (at -50 to 55°C)<br>Coil holding voltage* [2] 50 to    60% V (at  55 to 85°C)<br>Time  Operate time Max. 30 ms at rated coil voltage (at 20°C, without bounce)<br>characteristics<br>(initial) Release time* [5] Max. 10 ms at rated coil voltage (at 20°C, without bounce, without diode)<br>Shock  Functional 98 m/s [2] (half-sine shock pulse: 11 ms, detection time: 10 μs)<br>resistance Destructive 980 m/s [2] (half-sine shock pulse:  6 ms)<br>Vibration  Functional 10 to 55 Hz (at double amplitude of 1 mm, detection time: 10 μs)<br>resistance Destructive 10 to 55 Hz (at double amplitude of 1.5 mm)<br>Min. 10 [6]  ope.<br>Expected life Mechanical life Min. 10 x 10 [6]  ope. (switching frequency: 180 times/min) (switching frequency:  180 times/<br>min)<br>Ambient temperature: -50 to +85°C<br>Conditions Conditions for usage,  (When using at 55°C or higher, the coil holding voltage should be 50% V to 60% V)<br>transport and storage* [4] Humidity: 5 to 85% RH (Avoid icing and condensation)<br>Unit weight Approx. 80 g Approx. 85 g<br>**----- End of picture text -----**<br>


*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. 

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

*3. Coil holding voltage is the coil voltage after 100 ms from the applied rated voltage. 

*4. For ambient temperature, please read “GUIDELINES FOR RELAY USAGE”. 

*5. Release time will lengthen if a diode, etc., is connected in parallel to the coil. Be sure to verify operation under actual conditions. 

## **Expected electrical life** 

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Type Load Switching capacity Number of operations<br>30 A 250 V AC Min. 200 x 10 [3]  ope. (room temperature, switching frequency 20 times/min)<br>35 A 277 V AC Min.   30 x 10 [3]  ope. (at 85°C, switching frequency ON : OFF = 1 s : 9 s)<br>35 A Resistive load<br>35 A 490 V AC Min.   10 x 10 [3]  ope. (room temperature, switching frequency ON : OFF = 1 s : 9 s)<br>35 A   48 V DC Min.   10 x 10 [3]  ope. (room temperature, switching frequency ON : OFF = 1 s : 9 s)<br>48 A 277 V AC Min.   30 x 10 [3]  ope. (at 85°C, switching frequency ON : OFF = 1 s : 9 s)<br>48 A 490 V AC Min.   10 x 10 [3]  ope. (room temperature, switching frequency ON : OFF = 1 s : 9 s)<br>Resistive load<br>48 A   30 V DC Min.   30 x 10 [3]  ope. (at 85°C, switching frequency ON : OFF = 1 s : 9 s)<br>48 A 48 A   48 V DC Min.   10 x 10 [3]  ope. (room temperature, switching frequency ON : OFF = 1 s : 9 s)<br>1 Form A 48(cos Φ =  A 250 V AC0.8) Min.   30 x 10 [3]  ope. (at 85°C, switching frequency ON : OFF = 0.1 s : 10 s)<br>Inductive load<br>72 A 250 V AC<br>(cos Φ = 0.8) Min.   50 ope.  (at 85°C, switching frequency ON : OFF = 0.1 s : 10 s)<br>60 A 277 V AC Min.   10 x 10 [3]  ope. (at 85°C, switching frequency ON : OFF = 1 s : 9 s)<br>60 A 490 V AC Min.   10 x 10 [3]  ope. (room temperature, switching frequency ON : OFF = 1 s : 9 s)<br>80 A 277 V AC Min.   10 x 10 [3]  ope. (room temperature, switching frequency ON : OFF = 1 s : 9 s)<br>90 A Resistive load<br>90 A 277 V AC Min.   10 [3]  ope.  (at 85°C, switching frequency ON : OFF = 1 s : 9 s)<br>80 A   48 V DC Min.   10 x 10 [3]  ope. (room temperature, switching frequency ON : OFF = 1 s : 9 s)<br>90 A   60 V DC Min.   10 [3]  ope.  (at 85°C, switching frequency ON : OFF = 1 s : 9 s)<br>**----- End of picture text -----**<br>


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ASCTB101E   202204 

ー 3 ー 

Panasonic Industry Co., Ltd. 2022 

Power relays (Over 2 A) HE RELAYS PV Type 

## **REFERENCE DATA** 

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1-1. Max. switching capacity (AC Resistive 1-2. Max. switching capacity (DC Resistive 2-1. Coil temperature characteristics (35 A<br>load) load) type: Average)<br>Tested sample：HE 1a N-P-DC 9V-H18, 6 pcs.<br>Measured portion：Coil inside<br>Contact carrying current：35A<br>1,000 1,000 Ambient temperature：25℃, 60℃, 85℃<br>500 500 70<br>90A type 90A type<br>60<br>100 100<br>50 50 25℃<br>50<br>60℃<br>48A type 48A type 85℃<br>10 35A type 10 35A type 40<br>30<br>1 1<br>20<br>0.5 0.5<br>10<br>30 100 500 1,000 30 100 500 1,000 0<br>Contact voltage (V) Contact voltage (V) 0 50 60 70 80 90 100<br>Coil applied voltage（%V）<br>2-2. Coil temperature characteristics (48 A  2-3. Coil temperature characteristics (90 A  3.Ambient temperature characteristics<br>type: Average) type: Average)<br>Tested sample：HE 1a N-P-DC 9V-Y5, 6 pcs. Tested sample：HE 1a N-W-DC 12V-Y6, 6 pcs. Test sample： HE-PV (35A, 48A, 90A), 3pcs.<br>Measured portion：Coil inside Measured portion：Coil inside<br>Contact carrying current：48A Contact carrying current：90A<br>Ambient temperature：25℃, 60℃, 85℃ Ambient temperature：25℃, 60℃, 85℃<br>70 70<br>30<br>60 60<br>25℃ 20<br>25℃<br>50 50 60℃<br>60℃ 85℃ 10<br>85℃<br>40 40<br>ｰ 60 ｰ 40 ｰ 20 0<br>20 40 60 80 100<br>30 30 Ambient<br>20 20 Operate voltage ｰ10 temperature（°C）<br>10 10 ｰ20<br>Release<br>voltage ｰ 30<br>0 0<br>0 50 60 70 80 90 100 40 50 60 70 80 90 100 110<br>Coil applied voltage（%V） Coil applied voltage（%V）<br>4-1.Electrical life test (35 A type: resistive load 277 V AC 35 A, at 85°C)<br>Tested sample：HE 1a N-P-DC 9V-H18, 6 pcs. Operate and release voltage Change of contact resistance<br>Operation frequency：6 times/min.<br>（ON：OFF=1s：9s） 9 100<br>Circuit：<br>8 90<br>7 80<br>6 70<br>5 Operate voltage Max. 60<br>Min. Ave. 50<br>4<br>277V AC 40<br>9V DC 3<br>30<br>2 Release voltage Max. Ave. 20<br>Min. Max.<br>1 10 Min. Ave.<br>0 0<br>0 3 0 3<br>No. of operations（×10 [4] ） No. of operations（×10 [4] ）<br>Contact current (A) Contact current (A) （℃）<br>Temperature rise<br>（％）<br>（℃） （℃）<br>Rate of change<br>Temperature rise  Temperature rise<br>）<br>V<br>（ Ω）<br>m<br>（<br>Contact<br>Contact resistance<br>detection circuit<br>and Mis-contactingwelding detection Operate and release voltage<br>**----- End of picture text -----**<br>


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ASCTB101E   202204 

ー 4 ー 

Panasonic Industry Co., Ltd. 2022 

Power relays (Over 2 A) HE RELAYS PV Type 

## 4-2. Electrical life test (48 A type: resistive load 277 V AC 48 A, at 85°C) 

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Tested sample：HE 1a N-P-DC 9V-Y5, 6 pcs. Operate and release voltage Change of contact resistance<br>Operation frequency：6 times/min.<br>（ON：OFF=1s：9s） 9 100<br>Circuit： 8 ee 90<br>7 80<br>po po<br>6 70<br>Operate voltage 60<br>5 Max.<br>Min. Ave. 50<br>4<br>277V AC 40<br>9V DC 3<br>30<br>2 Release voltage Max. Ave. 20<br>Min. Max.<br>1 10 Min. Ave.<br>0 0<br>0 3 0 3<br>No. of operations（×10 [4] ） No. of operations（×10 [4] ）<br>4-3. Electrical life test (90 A type: resistive load 277 V AC 80 A, at 25°C)<br>Tested sample：HE 1a N-W-DC12V-Y6, 6 pcs. Operate and release voltage Change of contact resistance<br>Operation frequency：6 times/min.<br>（ON：OFF=1s：9s） 9 10<br>Circuit： 8 7 9<br>7 ee Operate voltage Max. 8<br>6 Min. Ave. 7<br>6<br>5<br>5<br>4<br>277V AC 4<br>12V DC 3<br>Release voltage Max. 3<br>2 Ave.<br>Min. 2 Max.<br>1 1 Min. Ave.<br>0 0<br>| 0 po 1 0 a 1<br>No. of operations（×10 [4] ） No. of operations（×10 [4] ）<br>a DIMENSIONS CAD  The CAD data of the products with a “CAD” mark can be downloaded from our Website. Unit: mm<br>a 35 A type<br>ap CAD External dimensions Recommended PC board pattern  Schematic<br>(BOTTOM VIEW) (BOTTOM VIEW)<br>24 1 4<br>4.7<br>6 5<br>6ｰ2dia.<br>38 33 hole<br>32<br>Tolerance ±0.1<br>+4<br>1.6 4.7 1.6 L d 0.8<br>0.8<br>General tolerance<br>Less than 1mm：±0.1<br>Min. 1mm less than 3mm：±0.2<br>Min. 3mm：±0.3<br>Note: Terminal dimensions are values without pre-soldering thickness.<br>）<br>V<br>（ Ω）<br>m<br>（<br>Contact<br>Contact resistance<br>detection circuitand Mis-contactingwelding detection Operate and release voltage<br>）<br>V<br>（ Ω）<br>m<br>（<br>Contact<br>Contact resistance<br>detection circuitand Mis-contactingwelding detection Operate and release voltage<br>8.4<br>18.6<br>36.3<br>0.5<br>4<br>**----- End of picture text -----**<br>


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ASCTB101E   202204 

Panasonic Industry Co., Ltd. 2022 

ー 5 ー 

Power relays (Over 2 A) HE RELAYS PV Type 

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|_| 48 A type<br>ea» CAD External dimensions<br>38 33<br>0.8 6.3 1.6 Ll 0.8<br>General tolerance<br>Less than 1mm：±0.1<br>Min. 1mm less than 3mm：±0.2<br>Min. 3mm：±0.3<br>36.3<br>0.5<br>4<br>**----- End of picture text -----**<br>


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Recommended PC board pattern  Schematic<br>(BOTTOM VIEW) (BOTTOM VIEW)<br>24 1 4<br>6.5<br>SS<br>finan @ 6 5 5 9 5<br>2ｰ2dia.<br>hole p a p<br>32<br>Tolerance ±0.1<br>1.3<br>8.4<br>18.6<br>**----- End of picture text -----**<br>


Note: Terminal dimensions are values without pre-soldering thickness. 

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|_| 90 A type<br>ea» CAD External dimensions Recommended PC board pattern  Schematic<br>(BOTTOM VIEW) (BOTTOM VIEW)<br>20 1 4<br>12 (R) @ oo 9<br>6 5<br>38 33 on<br>(R)<br>1.2<br>32<br>Tolerance ±0.1<br>Si —_<br>m l |<br>0.8 9.7±0.2 2 |_| 1.2<br>General tolerance<br>Less than 1mm：±0.1<br>Min. 1mm less than 3mm：±0.2<br>Min. 3mm：±0.3<br>Note: Terminal dimensions are values without pre-soldering thickness.<br>1.8<br>13.3<br>23.5<br>3.6<br>38.8<br>3<br>4<br>**----- End of picture text -----**<br>


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ASCTB101E   202204 

ー 6 ー © Panasonic Industry Co., Ltd. 2022 

Power relays (Over 2 A) HE RELAYS PV Type 

## **SAFETY STANDARDS** 

Each standard may be updated at any time, so please check our Website for the latest information. 

## **UL (Approved)** 

35 A type 

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File No. Contact rating Operations<br>**----- End of picture text -----**<br>


||Contact rating|Contact rating|
|---|---|---|
||||
|E43028|35A277V AC|10×103|
||30A277V AC|100×103|
||30A30V DC|100×103|
||3HP250V AC|100×103|
||1.5HP125V AC|100×103|



## **UL/C-UL (Approved)** 

48 A type 

|File No.|Contact rating|Operations|Ambient<br>temperature|
|---|---|---|---|
|E43028|60A277V AC|10×103|60°C|
||48A277V AC|30×103|85°C|



## 90 A type 

|File No.|Contact rating|Operations|Ambient<br>temperature|
|---|---|---|---|
|E43028|80A300V AC|10×103|−|
||80A300V AC|6×103|85°C|



## **VDE (Approved)** 

## 35 A type 

|File No.|Contact rating|Operations|Ambient<br>temperature|
|---|---|---|---|
|40006681|35A250V AC (cosφ =1.0)|50×103|80°C|



Note) For only 9 V DC coil 

## 48 A type 

|File No.|Contact rating|Operations|Ambient<br>temperature|
|---|---|---|---|
|40006681|72A250V AC (cosφ =0.8)|50|85°C|
||60A250V AC (cosφ =0.8)|10×103|85°C|
||50A20V DC (0ms)|30×103|85°C|
||48A250V AC (cosφ =0.8)|30×103|85°C|



## 90 A type 

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Ambient<br>File No. Contact rating Operations<br>temperature<br>**----- End of picture text -----**<br>


|File No.|Contact rating|Operations|Ambient<br>temperature|
|---|---|---|---|
|||||
|40006681|90A300V AC (cosφ =1.0)|103|85°C|
||90A250V AC (cosφ =0.8)|103|85°C|
||80A250V AC (cosφ =1.0)|10×103|25°C|
||80A250V AC (cosφ =0.8)|10×103|85°C|
||135A250V AC (cosΦ=0.8)|50|85°C|



## **CSA (Approved)** 

35 A type 

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File No. Contact rating Operations<br>**----- End of picture text -----**<br>


|File No.|Contact rating|Operations|
|---|---|---|
|1011904|35A277V AC|10×103|
||30A277V AC|100×103|
||30A30V DC|100×103|
||3HP250V AC|100×103|
||1.5HP125V AC|100×103|



## **TV rating** 

35 A type 

|File No.|Contact rating|
|---|---|
|E43028|TV-15|



## 48 A type, 90 A type 

CSA standard approved by C-UL 

## **INSULATION CHARACTERISTICS (IEC61810-1)** 

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Item Characteristics<br>Clearance/Creepage distance (IEC61810-1) Min. 5.5 mm/8.0 mm<br>Category of protection (IEC61810-1) RT II<br>Tracking resistance (IEC60112) PTI 175<br>Insulation material group III a<br>Over voltage category III<br>Rated voltage 250 V<br>Pollution degree 3<br>Type of insulation (Between contact and coil) Reinforced insulation<br>Type of insulation (Between open contact) Full disconnection<br>**----- End of picture text -----**<br>


Note: Actual value 

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ASCTB101E   202204 

Panasonic Industry Co., Ltd. 2022 

ー 7 ー 

Power relays (Over 2 A) HE RELAYS PV Type 

## **GUIDELINES FOR USAGE** 

**For cautions for use, please read “GUIDELINES FOR RELAY USAGE”. https://industrial.panasonic.com/ac/e/control/relay/cautions_use/index.jsp** 

## **Cautions for usage of HE-PV relay** 

Usage, transport and storage conditions 

- 1)  Ambient temperature : -50 to 85°C 

(When using at 55°C or higher, the coil holding voltage should be 50% V to 60% V) 

- 2) Humidity: 

- 5 to 85% RH (Avoid icing and condensation) 

Note:  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] 

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Humidity (％ RH)<br>85<br>Allowa b le range<br>Avoid icing Avoid con­<br>when used at densation when<br>temperatures used at tem­<br>lower than 0°C peratures higher<br>than 0°C<br>5<br>ｰ50 0 55 85<br>Ambient temperature (℃)<br>When using 55 ～ 85℃<br>Coil holding Voltage： 50 ～ 60% V<br>**----- End of picture text -----**<br>


## DC load guidelines 

In case the relay is used as a DC high voltage switch, the final failure mode may be uninterruptible.In the event that the power supply cannot be cut off, in the worst case,the fire may spread to the surrounding area. Therefore, configure the power supply so that it can be turned off within one second. Also,consider a fail safe circuit for your equipment. 

Use a varistor to absorb the surge of the coil. 

If a diode is used, the contact separation speed will be slow and the cutoff performance will be degraded. 

- < Recommended Varistor > 

Energy tolerance: 1 J or more 

varistor voltage  : 1.5 times or more of the rated coil voltage When using an inductive load (L load) with L/R > 1 ms, take surge absorption measures in parallel with the inductive load. 

## About parallel relay connections 

When multiple relays are connected in parallel, design the equipment so that the load applied to each relay is within the specified range. 

(Concentration of load on one relay leads to early failure.) 

## Ambient Atmosphere 

If the relay is used or stored in an atmosphere of corrosive gas (Sulfurous acid gas: SO2, hydrogen sulfide gas: H2S), corrosive gas components may adhere to the contacts, resulting in contact failure. Do not use or store the relay in such an atmosphere. 

## Method for reducing coil holding voltage 

When the coil holding voltage is used by PWM control, the release voltage varies depending on the operating temperature and operating conditions. Therefore, please evaluate the coil holding voltage under the worst operating conditions. Recommended operating condition: Periods: 20 kHz to 100 kHz, Duty Ratio: 50% 

About conductor cross-sectional area during mounting When designing a printed circuit board, ensure that there is sufficient margin in the conductor width and conductor spacing. To reduce the temperature rise, refer to the crosssectional area of the conductor of UL 508. 

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ー 8 ー 

ASCTB101E   202204 

Panasonic Industry Co., Ltd. 2022 

**GUIDELINES FOR POWER, HIGH-CAPACITY DC CUT OFF AND SAFETY RELAYS USAGE** 

**For cautions for use, please read “GUIDELINES FOR RELAY USAGE”. https://industrial.panasonic.com/ac/e/control/relay/cautions_use/index.jsp** 

## **Precautions for Coil Input** 

## **Long term current carrying** 

A circuit that will be carrying a current continuously for long periods without relay switching operation. (circuits for emergency lamps, alarm devices and error inspection that, for example, revert only during malfunction and output warnings with form B contacts) Continuous, long-term current to the coil will facilitate deterioration of coil insulation and characteristics due to heating of the coil itself. For circuits such as these, please use a magnetic-hold type latching relay. If you need to use a single stable relay, use a sealed type relay that is not easily affected by ambient conditions and make a failsafe circuit design that considers the possibility of contact failure or disconnection. 

## **DC Coil operating power** 

Steady state DC current should be applied to the coil. The wave form should be rectangular. If it includes ripple, the ripple factor should be less than 5%. 

However, please check with the actual circuit since the electrical characteristics may vary. The rated coil voltage should be applied to the coil and the set/reset pulse time of latching type relay differs for each relays, please refer to the relay's individual specifications. 

## **Maximum allowable voltage and temperature rise** 

- Proper usage requires that the rated coil voltage be impressed on the coil. Note, however, that if a voltage greater than or equal to the maximum continuous voltage is impressed on the coil, the coil may burn or its layers short due to the temperature rise. Furthermore, do not exceed the usable ambient temperature range listed in the catalog. 

## **Operate voltage change due to coil temperature rise** 

- In DC relays, after continuous passage of current in the coil, if the current is turned OFF, then immediately turned ON again, due to the temperature rise in the coil, the operate voltage will become somewhat higher. Also, it will be the same as using it in a higher temperature atmosphere. The resistance/temperature relationship for copper wire is about 0.4% for 1°C, and with this ratio the coil resistance increases. That is, in order to operate of the relay, it is necessary that the voltage be higher than the operate voltage and the operate voltage rises in accordance with the increase in the resistance value. However, for some polarized relays, this rate of change is considerably smaller. 

## **Coil connection** 

When connecting coils of polarized relays, please check coil polarity (+,-) at the internal connection diagram (Schematic). If any wrong connection is made, it may cause  unexpected malfunction, like abnormal heat, fire and so on, and circuit do not work. Avoid impressing voltages to the set coil and reset coil at the same time. 

## **Ambient Environment** 

## **Usage, Transport, and Storage Conditions** 

During usage, storage, or transportation, avoid locations subjected to direct sunlight and maintain normal temperature, humidity and pressure conditions. 

## **Temperature/Humidity/Pressure** 

When transporting or storing relays while they are tube packaged, there are cases the temperature may differ from the allowable range. In this case be sure to check the individual specifications. Also allowable humidity level is influenced by temperature, please check charts shown below and use relays within mentioned conditions. (Allowable temperature values differ for each relays, please refer to the relay's individual specifications.) 

## 1) Temperature: 

The tolerance temperature range differs for each relays, please refer to the relay’s individual specifications 

## 2) Humidity: 5 to 85 % RH 

3) Pressure: 86 to 106 kPa 

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## **Dew condensation** 

Condensation occurs when the ambient temperature drops suddenly from a high temperature and humidity, or the relay is suddenly transferred from a low ambient temperature to a high temperature and humidity. Condensation causes the failures like insulation deterioration, wire disconnection and rust etc. 

Panasonic Industry Co., Ltd. does not guarantee the failures caused by condensation. 

The heat conduction by the equipment may accelerate the cooling of device itself, and the condensation may occur. 

Please conduct product evaluations in the worst condition of the actual usage. (Special attention should be paid when high temperature heating parts are close to the device. Also please consider the condensation may occur inside of the device.) 

## **Icing** 

Condensation or other moisture may freeze on relays when the temperature become lower than 0°C.This icing causes the sticking of movable portion, the operation delay and the contact conduction failure etc. Panasonic Industry Co., Ltd. does not guarantee the failures caused by the icing. 

The heat conduction by the equipment may accelerate the cooling of relay itself and the icing may occur. Please conduct product evaluations in the worst condition of the actual usage. 

## **Low temperature and low humidity** 

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

## **High temperature and high humidity** 

Storage for extended periods of time (including transportation periods) at high temperature or high humidity levels or in atmospheres with organic gases or sulfide gases may cause a sulfide film or oxide film to form on the surfaces of the contacts and/ or it may interfere with the functions. Check out the atmosphere in which the units are to be stored and transported. 

Panasonic Industry Co., Ltd. Electromechanical Control Business Division industrial.panasonic.com/ac/e/ 

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> Panasonic Industry Co., Ltd. 2022 ASCTB412E   202204 

## GUIDELINES FOR POWER, HIGH-CAPACITY DC CUT OFF AND SAFETY RELAYS USAGE 

## **Package** 

In terms of the packing format used, make every effort to keep the effects of moisture, organic gases and sulfide gases to the absolute minimum. 

## **Silicon** 

When a source of silicone substances (silicone rubber, silicone oil, silicone coating materials and silicone filling materials etc.) is used around the relay, the silicone gas (low molecular siloxane etc.) may be produced. 

This silicone gas may penetrate into the inside of the relay. When the relay is kept and used in this condition, silicone compound may adhere to the relay contacts which may cause the contact failure. Do not use any sources of silicone gas around the relay (Including plastic seal types). 

## **NOx Generation** 

When relay is used in an atmosphere high in humidity to switch a load which easily produces an arc, the NOx created by the arc and the water absorbed from outside the relay combine to produce nitric acid. 

This corrodes the internal metal parts and adversely affects operation. 

Avoid use at an ambient humidity of 85%RH or higher (at 20°C). If use at high humidity is unavoidable, please contact our sales representative. 

## **Others** 

## **Cleaning** 

- Although the environmentally sealed type relay (plastic sealed type, etc.) can be cleaned, avoid immersing the relay into cold liquid (such as cleaning solvent) immediately after soldering. Doing so may deteriorate the sealing performance. 

- Cleaning with the boiling method is recommended(The temperature of cleaning liquid should be 40°C or lower ). 

- Avoid ultrasonic cleaning on relays. Use of ultrasonic cleaning may cause breaks in the coil or slight sticking of the contacts due to ultrasonic energy. 

Please refer to **"the latest product specifications"** when designing your product. 

•Requests to customers: https://industrial.panasonic.com/ac/e/salespolicies/ 

Panasonic Industry Co., Ltd. Electromechanical Control Business Division industrial.panasonic.com/ac/e/ 

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ASCTB412E   202204 

Panasonic Industry Co., Ltd. 2022 

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Electromechanical Control Business Division 1006, Oaza Kadoma, Kadoma-shi, Osaka 571-8506, Japan industral.panasonic.com/ac/e/ 

Specifications are subject to change without notice. ASCTB101E   202204 

©Panasonic Industry Co., Ltd. 2022 

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