TRANSFORMERS & ELECTRICAL COMPONENTS
Protection coordination
Review the monitored circuit and trip chain with the equipment protection schedule.
Measurement, Monitoring & Protection
Series reference image. Appearance, terminals and included accessories vary by configuration. Manufacturer image source ↗
03 / Measurement, Monitoring & Protection
Sieyuan IES-521 Transformer Protection
Configurable protection and monitoring for power-transformer projects. Selection starts with the transformer winding arrangement, CT circuits, protection philosophy and station communications.
- Brand
- Sieyuan
- Manufacturer
- Sieyuan
- Series / range
- IES-521 configuration selection
- Supply
- Component sourcing on enquiry
- Document reference
- Sieyuan official English IES-521 protection platform and specifications
- Platform
- IES-521; hardware and function configuration required
- Transformer arrangements
- Two-winding, three-winding and autotransformer applications
- Differential scope
- Up to 6 transformer sides, configuration-dependent
Technical data & selection
Series selection
| Parameter | Reference data |
|---|---|
| Platform | IES-521; hardware and function configuration required |
| Transformer arrangements | Two-winding, three-winding and autotransformer applications |
| Differential scope | Up to 6 transformer sides, configuration-dependent |
| Full chassis W × H × D | 455 × 266.7 × 233.5 mm; 6U; mounting bracket excluded |
| Half chassis W × H × D | 221.3 × 266.7 × 233.5 mm; 6U; mounting bracket excluded |
| Enclosure protection | Front IP54 / side IP40 / rear IP30 |
| Network options | 2 or 4 100Base-TX RJ45; 2 or 4 100Base-FX optical ports |
| Clock synchronisation options | IRIG-B, PPS, IEEE 1588 and SNTP |
Port counts and chassis dimensions are alternatives. Confirm auxiliary supply, CT/VT inputs, I/O allocation, communications implementation, firmware and protection settings in the agreed configuration. Relay settings and commissioning require project-specific engineering.
Application & integration
Maintenance planning
Record the existing settings, wiring and hardware version before selecting a replacement.
Manufacturer documents
Use the document for the complete order reference and delivered revision. Manufacturer links open the original source.
Prepare your enquiry
- Equipment single-line diagram, monitored voltage and CT/VT details.
- Protection function, contact/trip requirements and auxiliary supply.
- Communication protocol, mounting arrangement, quantity and destination.
A nameplate photograph or equipment list is enough to start. Mingkong provides component sourcing on enquiry; the offered brand, complete code, documentation and delivery terms are confirmed in the quotation.
Plan your enquiry
Use these guides to prepare the information for equipment selection and quotation.