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Before Installation
Confirm the dry-type transformer rating, voltage, and enclosure (IP class) match the site. Verify the foundation can bear the weight, clearances meet fire codes, and ventilation is adequate — airflow is the only cooling medium.
Step-by-Step Installation
- Position on a level, vibration-isolated base with required clearances.
- Connect the earthing system to both tank frame and core.
- Terminate primary and secondary cables with correct torque.
- Check fan (if AF class) rotation and control setpoints.
- Perform insulation resistance and ratio tests before energizing.
Key Installation Parameters
| Item | Guideline |
|---|---|
| Clearance to wall | ≥ 0.8–1.0 m for airflow |
| Ventilation | Adequate air changes; avoid hot-air recirculation |
| Humidity | Keep below limits; use space heaters in storage |
| IP rating | IP20 indoor, IP54+ for dusty/damp |
Maintenance Routine
- Clean dust from windings and enclosures periodically.
- Verify fan operation and alarm setpoints.
- Check connections for tightness and discoloration.
- Inspect resin for cracks after shocks or faults.
Frequently Asked Questions
Can it share a room with switchgear?
Yes, if ventilation and clearances are sufficient and the room meets fire separation rules.
Do dry-type units need oil checks?
No — that is the main maintenance advantage over oil-immersed units.
Still deciding between technologies? See the dry vs oil guide before you install.