Shenhai Explosion-Proof
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 |
| Barotropic Type | px,py,pz,pxb,pyb,pZc | p;pb,pc,pD |
| Increased Safety Type | e,eb | / |
| Flameproof Type | d,db | / |
| Oil Immersed Type | o | / |
| Sand Filled Mold | q,qb | / |
| N-type | nA,nC,nL,nR,nAc,nCc,nLc.,nRc | / |
| Special Type | S | / |
| Shell Protection Type | / | ta,tb,tc,tD |
These identifiers encompass a range of types, such as flameproof “d”, increased safety “e”, intrinsic safety “i”, oil-immersed “o”, sand-filled “q”, encapsulated “m”, type “n”, special type “s”, and designs for dust explosion-proofing, among others.