Megger MAGNUS Step-up Transformer
The Megger Magnus is a compact, high-performance step-up transformer designed for fast and reliable verification of instrument transformers during commissioning, fault investigation and routine maintenance. Supplied as standard with special high-voltage leads and a robust transport case, Megger Magnus helps you create precise excitation curves, carry out voltage transformer ratio checks, and safely demagnetise current transformer cores directly on site.
Why choose Megger Magnus?
Megger Magnus delivers a stable, adjustable AC output with clear measurement terminals, so engineers can work quickly and confidently. Two-hand control improves operator safety during energisation, while the rugged build and complete accessory set make Megger Magnus the dependable choice for substations, industrial plants and field-service teams who value precision and durability.
Megger Magnus Key Features:
- Quick preparation of excitation (saturation) curves for current transformers with smooth voltage adjustment.
- Built-in demagnetisation function to remove residual magnetism from CT cores after testing.
- Simple turn-ratio checks on voltage transformers with clear measurement connections.
- Two-hand control system and status indication enhance operator safety during testing.
- Delivered ready to work, complete with all essential cables and a rugged protective case.
Choose Megger Magnus for consistent, repeatable measurements and a reliable power source that travels easily from site to site.
Typical Applications
- Excitation curves for CTs: Identify the knee point quickly and verify transformer performance.
- Demagnetisation: Remove remanence to restore CT cores before service reinstatement.
- VT ratio confidence checks: Validate voltage transformer ratios and polarity during commissioning.
- Ancillary testing: Provide a controlled AC source for on-site verification tasks.
Whether commissioning a new installation or performing diagnostic testing, Megger Magnus keeps your workflow efficient and your results accurate.
Safety and Good Practice
Operate Megger Magnus only by qualified personnel. Always connect the protective earth before energising, follow local safety procedures, and use only the supplied high-voltage cables. Two-hand control prevents accidental operation, and the clear indicator lamps give instant status feedback throughout testing.
Technical Highlights (at a glance)
- Stable, variable AC output for CT and VT testing.
- Dedicated measurement outputs for accurate, repeatable readings.
- Compact, robust design suitable for tough site conditions.
- Designed and built to Megger’s renowned UK quality standards.
Engineered for reliability and precision, Megger Magnus brings laboratory-level performance to the field.
What comes with the Megger Magnus?
- 2 × 10 m high-voltage test leads rated 5 kV.
- 1 × 5 m protective earth lead.
- Rugged, shock-resistant transport case.
- User documentation and quick-start guide.
- Factory calibration and verification certificate.
Everything you need to start testing immediately, with Megger’s trusted quality and long-term reliability built in.
❓ Frequently Asked Questions (FAQ)
Q1. What is the purpose of the Megger Magnus?
A. The Megger Magnus provides a controllable AC source to test current and voltage transformers. It helps create excitation curves, perform ratio tests and demagnetise CT cores safely and efficiently.
Q2. Can I use the Megger Magnus on-site in substations?
A. Yes. The Megger Magnus is designed for field use with a durable case and accessories suitable for substation and industrial environments.
Q3. Does the Megger Magnus require any special training?
A. It should be operated by trained electrical professionals familiar with high-voltage testing procedures and local safety regulations.
Q4. Is the Megger Magnus compatible with 230 V mains supply?
A. Yes. It is available in both 115 V and 230 V versions, each supplied with the correct accessories for your region.
Q5. How is safety ensured during testing?
A. The Megger Magnus uses two-hand control and protective earthing, with clear indicator lamps to prevent unintentional energisation and ensure safe operation at all times.