Green refrigerant compatible
B: Contribution to decarbonization of customers' products
Power relays
(Conforms to IEC/EN 60079-1,60079-15)G5NB, G2RL, G5Q, G5PZ
DMS contributes to ensuring the safety of
air-conditioning equipment that uses
"green refrigerants", which are
expected to become more
widespread in
the future.
Some refrigerants have a global warming potential (GWP) of more than 1000.
The global warming potential of CO2 is 1, which means that common refrigerants have a greater impact on global warming than CO2.
(Source: GHG)
https://ghgprotocol.org/sites/default/files/ghgp/Global-Warming-Potential-Values%20%28Feb%2016%202016%29_1.pdf
In recent years, there has been a growing focus on "green refrigerants *1" which exhibit less global warming effects.
However, many green refrigerants are flammable substances and can cause ignition hazards. Therefore, in order to use green refrigerants, it is necessary to make the related equipment explosion-proof.
In order to make equipment explosion-proof, it is common practice to enclose elements that can become ignition sources with metal casings, etc. to prevent the spread of fire. However, this can result in a relatively expensive product.
Relays are among the components in equipment that can cause ignition, and general relays can be a source of ignition due to arc discharge when the contact opens and closes. For example, in the case of air conditioning equipment that uses refrigerants, the use of explosion-proof standard-conforming relays *2 contributes to making the entire equipment explosion-proof while ensuring safety. Consequently, more people will be able to use air conditioning equipment that uses green refrigerants, thereby contributing more to the reduction of global warming.
If you are interested in OMRON's explosion-proof certified relays, please refer to the related products below.
*1 Green refrigerants refer to chlorofluorocarbon-free refrigerants such as natural refrigerants and low GWP chlorofluorocarbons.
*2 Regarding IEC/EN60079-1, -15
Type of protection：Enclosed-break devices （Group ⅡA*3）(IEC/EN) 60079-1 clause 15.5 testing passed.
Type of protection：Sealed devices (IEC/EN) 60079-15 clause 11.2 testing passed.
Please contact your local OMRON representative for more details on the standards
[The value DMS provides]
- Conforming to IEC/EN 60079-1,60079-15. Can be used to ensure the safety of air conditioning equipment such as air-conditioners and heat pumps.
Products conform to (IEC/EN) 60079-1,60079-15
The conform relays have been tested to meet the standard of (IEC/EN) 60079-15: Explosive atmospheres – Part 15 and confirmed to be nonflammable. Therefore, such relays are not considered an ignition source because they meet the standard for air-conditioners and heat pumps, IEC 60335-2-40.
For air conditioning equipment
Safety standards
Safety standards for household electrical appliances in general
| Product standards | IEC 60335-1 | Household and similar electrical appliances - Safety |
|---|
Standards for air-conditioners and heat pumps
| Product standards | IEC 60335-2-40 | Particular requirements for electrical heat pumps, air-conditioners and dehumidifiers |
|---|---|---|
| <Relay-related content excerpt>
Group IIA gases *3 or refrigerants used shall not be considered a relay ignition source if they comply with IEC 60079-1 clause 15.5 and IEC 60079-15 clause 11.2. |
||
| Standards For Explosive atmospheres | IEC 60079-1 | Explosive Atmospheres - Part 1: Equipment Protection by Flameproof Enclosures “d” |
| IEC 60079-15 | Explosive atmospheres - Part 15: Equipment protection by type of protection “n” | |
*3 Gas protection group definition
– Group IIA: (55 ± 0,5) % hydrogen/air at atmospheric pressure;
– Group IIB: (37 ± 0,5) % hydrogen/air at atmospheric pressure;
– Group IIC: (40 ± 1) % hydrogen, (20 ± 1) % oxygen and the remainder nitrogen at atmospheric pressure or alternatively (27,5 ± 1,5) %
hydrogen/air at an overpressure at a pressure equal to 1,5 times atmospheric pressure.
