TAXONOMY: CMP_OLTC
On-Load Tap Changers (OLTC & DETC)
Vacuum & Oil-Break Tap Changers, Motor Drive Units & Regulating Relays
Industry Knowledge Graph Route
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Technical Baseline & Specification Parameters
| Switching Technology | Vacuum Interrupter (300,000 ops) or Oil-Break Diverter |
|---|---|
| Max Voltage | Up to 1,200 kV system voltage |
| Max Through-Current | Up to 3,000 A per phase |
| Step Voltage / Positions | Up to 35 tapping positions standard |
| Drive Mechanism | Motor Drive Unit (MDU) with SCADA/IEC 61850 |
Subcategories & Engineering Architectures
Vacuum In-Tank OLTC
Diverter switch inside separate oil chamber utilizing hermetic vacuum bottles to eliminate contact wear and oil carbonization.
Bell-Type / Selector OLTC
Combined selector switch for medium power transformers and industrial furnace applications.
De-Energized Tap Changers (DETC)
Off-circuit rotary or linear tap changers for seasonal or system tap adjustments.
Smart Motor Drive Units
Integrated tap position monitoring, motor current torque analytics, and optical encoder feedback.
Verified Global Suppliers & Manufacturers (7)
Verified suppliers with independent factory documentation, technical capability certifications, and direct quotation channels.
| Company & Location | Capabilities & Product Lines | Status | Action |
|---|---|---|---|
|
Maschinenfabrik Reinhausen (MR) Regensburg, Germany |
VACUTAP vacuum OLTCs, ECOTAP, and ETOS digital automation | ✓ Verified | Website ↗ · RFQ |
|
Huaming Power Equipment (HM) Shanghai, China |
Full range of vacuum and conventional on-load tap changers | ✓ Verified | Website ↗ · RFQ |
|
Easun MR Chennai, India |
Tap changers, motor drives and accessories for Indian & export markets | ✓ Verified | Website ↗ · RFQ |
|
CTR Manufacturing Pune, India |
On-load and off-circuit tap changers | ✓ Verified | Website ↗ · RFQ |
|
Maschinenfabrik Reinhausen (MR / Reinhausen Group) Regensburg, Germany |
Tap changers (OLTC / DETC), Monitoring / diagnostic devices, Breathers (silica gel), Pressure-relief devices | ✓ Verified | Website ↗ · RFQ |
|
BTRAC Ltd Telford, United Kingdom |
Bushings (HV, LV), Tap changers (OLTC / DETC), Monitoring / diagnostic devices, Buchholz relays | ✓ Verified | Website ↗ · RFQ |
|
SPX Transformer Solutions (Prolec-GE Waukesha) Waukesha, United States |
Bushings (HV, LV), Tap changers (OLTC / DETC), Monitoring / diagnostic devices, Oil treatment devices | ✓ Verified | Website ↗ · RFQ |