Explosion-proof markings on electrical equipment represent the specific explosion-proof construction employed in these devices.
Explosion Proof Type | Gas Explosion-proof Symbol | Dust Explosion-proof Symbol |
---|---|---|
Intrinsically Safe Type | ia,ib,ic | ia,ib,ic,iD |
Exm | ma,mb,mc | ma,mb,mc,mD |
Barotropysk type | px,py,pz,pxb,pyb,pZc | p;pb,pc,pD |
Ferhege feiligens Type | e,eb | / |
Flameproof Type | d,db | / |
Oalje ûnderdompele Type | o | / |
Sand Fold Mold | q,qb | / |
N-type | nA,nC,nL,nR,nAc,nCc,nLc., nRc | / |
Spesjaal type | S | / |
Shell Protection Type | / | facing,tb,tc,tD |
These identifiers encompass a range of types, such as flameproof “d”, ferhege feiligens “e”, yntrinsike feiligens “ik”, oil-immersed “o”, sand-filled “q”, encapsulated “m”, type “n”, special type “s”, and designs for dust explosion-proofing, ûnder oaren.