Panasonic ASCT1F46E manual Usage ambient condition

12.Usage ambient condition

1.Temperature,

humidity, air pressure

2.Dust

3.Silicon

4.Magnetism

5.Vibration

6.Shock

7.Dew condensation

10

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

The allowable specifications for environments suitable for usage, storage, and transportation are given below.

1.Temperature: The allowable temperature range differs with each relay, so refer to the relay's individual specifications. In addition, in the case of transporting and storing relays in a tube package, the temperature may differ from the allowable range of the relay. So, please contact us for individual specifications.

2.Humidity: 5 to 85 % R.H.

3.Pressure: 86 to 106 kPa

Furthermore, the humidity range varies with the temperature. So, use relays within the range indicated in the graph below.

(The allowable temperature range differs for each relay.)

-Be sure the usage ambient temperature does not exceed the value listed in the catalog.

-When switching with a load which easily generates arc in high-humidity environment, the NOx generated 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 using them at an ambient humidity of 85%RH or higher (at 20°C). If it is unavoidable to use them in such environment, please consult us.

-Plastic sealed type relays are especially not suited for use in environments which require airtight relays. Although there is no problem if they are used at sea level, avoid using them in atmospheric pressures beyond 96±10kPa. Also avoid using them in an atmosphere containing flammable or explosive gases.

It is recommendable to use relays in a normal temperature and humidity with less dust, sulfur gases (SO2, H2S), and organic gases.

Sealed types (plastic sealed type) should be considered for applications in an adverse environment. Silicon-based substances (silicon rubber, silicon oil, silicon-based coating material, silicon caulking compound, etc.) emit volatile silicon gas. Note that when silicon is used near relay, switching the contacts in the presence of its gas causes silicon to adhere to the contacts and may result in contact failure.

Therefore, please use a substitute that is not silicon-based. Plastic also has air permeability so please avoid using them in a silicone atmosphere.

If relays are proximately installed each other or installed near highly-magnetized parts such as motor and speaker, the relay may change its operational characteristics or cause malfunction. So, please verify in actual installation and operational condition.

Vibration of the area where relay is installed may be enhanced more than expected depending on installation condition of PCB. So, please verify in actual use condition. NO contact is the recommended contact for the use at the vibration-frequent area because the vibration resistance performance of NC contact is generally inferior to that of NO contact.

It is ideal for mounting of relay that the movement of the contacts and movable parts is perpendicular to the direction of vibration or shock. Especially note that the vibration and shock resistance of NC contacts while the coil is not excited is greatly affected by the mounting direction of the relay.

Condensation forms when vapors when there is a sudden change in temperature under high temperature, high humidity conditions. Note that condensation may cause deterioration of the insulation, breaking of coil, and rusting.

Note that if a relay is connected or installed with a high heat-capacity such as bas bar, connector, harness, and PCB, heat removal phenomenon will accelerate cooling of the relay inside and promote condensation. So, please verify in actual installation condition.