Cable Gland and Entry Selection
Cable gland and entry selection determines how each cable passes into a control panel or field enclosure while preserving the enclosure's IP rating, providing strain relief, and — where required — maintaining EMC shielding continuity or hazardous-area sealing. It's a small BOM line item that, if specified incorrectly, quietly undermines an otherwise well-rated enclosure.
- Sealing field cable entries into IP65/IP66/IP69K rated enclosures.
- Providing 360° shield termination for EMC-sensitive VFD and servo power cables.
- Strain-relieving multicore and instrumentation cables at panel entry points.
- Sealing entries in hazardous-area enclosures per ATEX/IECEx cable entry requirements.
Gland selection depends on the cable outer diameter range, the enclosure's IP target, whether EMC shield bonding is required (typically via a 360° shielded gland rather than a pigtail ground), and the entry plate material and thickness. Unused entries must be sealed with blanking plugs of matching rating, and multi-cable transit systems are sometimes used where many small cables must enter through a single, densely packed cutout without individual glands. Gland torque and installation technique also affect whether the rated IP seal is actually achieved in practice, not just on paper.
- Selecting a gland sized for the cable's nominal diameter without accounting for the actual sheath range tolerance.
- Using a pigtail ground wire for shield termination on a VFD cable instead of a proper 360° shielded gland.
- Leaving unused enclosure entries unsealed or capped with a lower-rated blanking plug.
- Ignoring entry plate material compatibility, causing galvanic corrosion between dissimilar metals.
- Under-torquing glands during installation, which fails to achieve the rated IP seal despite correct part selection.
ClusterVise carries the enclosure's target IP rating through to the cable entry BOM automatically, flagging EMC-sensitive cables that need 360° shielded glands instead of standard entries, so the enclosure's rating isn't quietly compromised at the gland plate.
| Item | Selection | Basis |
|---|---|---|
| Cable type | Shielded VFD motor cable, 12mm OD | Requires EMC-aware entry, not standard gland |
| Selected gland | 360° shielded EMC gland, IP68 | Maintains shield bonding and enclosure IP rating |
| Entry plate | Separate gland plate for power vs signal | Reduces noise coupling into signal cables |
| Unused entries | Sealed with IP68 blanking plugs | Preserves overall enclosure rating |
| Installation check | Gland torqued to manufacturer spec | Confirms rated seal is actually achieved |
