Electrical connection
DANGER
Risk of fatal injury due to electrical current!
Improper conduct when carrying out electrical work can lead to death due to electric shock!
- Electrical work must be carried out by a qualified electrician!
- Observe local regulations!
- Always connect the mixer to an electrical outlet outside the explosive area. If the connection has to be made within the explosive area, then the connection must be carried out in an Ex-rated housing (ignition protection class according to DIN EN 60079‑0)! Non-compliance will lead to a risk of fatal injury from explosion! The connection must always be carried out by a qualified electrician.
- All monitoring devices outside the “spark-proof areas” must be connected via an intrinsically safe circuit (e.g. Ex-i relay XR-4...).
- The voltage tolerance may not be higher than max. ±10 %.
Overview of possible monitoring devices for submersible mixers with Ex rating:
Type | OPTI-TR 20-1 ... | EXCEL-TRE 20 ... | OPTI-TR 22 ... | OPTI-TR 28-1 ... | OPTI-TR 30-1 ... | EXCEL-TRE 30 ... | OPTI-TR 40-1 ... | EXCEL-TRE 40 ... |
|---|---|---|---|---|---|---|---|---|
Motor compartment | o | o | − | o | − | − | − | − |
Sealing chamber (external pencil electrode) | o | o | o | o | o | o | o | o |
With ATEX approval | ||||||||
Motor winding: Temperature limiter | o | o | o | o | o | o | o | o |
Motor winding: Temperature controller and limiter | • | • | • | • | • | • | • | • |
With FM-/CSA-Ex rating | ||||||||
Motor winding: Temperature limiter | • | • | • | • | • | • | • | • |
Motor winding: Temperature controller and limiter | o | o | o | o | o | o | o | o |
Key
− = not possible, o = optional, • = standard