Transformer Protection RET615
Warranty: 365 days
Qualification: original model
Conditions: New / Used
Warehouse: Spot
Delivery date: shipped within 3 days after payment
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Microtaxi/phone: 18030183032
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RET615 Introduction
1. Product Features
- Multifunctional Integration
RET615 integrates protection, control, measurement and monitoring functions into a single unit, delivering comprehensive protection and management for two-winding transformers.
- Flexible Configuration
Eight standard configurations are available to adapt to various earth fault protection schemes for transformers with high-impedance or low-impedance neutral earthing modes. Digital compensation is built in to offset transformer ratio discrepancies and phase shifts of all connected transformers.
- Comprehensive Communication Support
It complies with the IEC 61850 substation communication standard, supporting GOOSE messaging and IEC 61850‑8‑1 based parameter transmission. Meanwhile, it is compatible with DNP3 and IEC 60870‑5‑103 protocols, and supports PROFIBUS DP V1 via the SPA‑ZC 302 adapter. Redundant Ethernet communication is enabled through optional Ethernet interface modules.
- User‑Friendly HMI
Equipped with a large LCD screen displaying editable single-line diagrams. Local access is available via the front panel HMI, plus remote browser-based web HMI access.
- Easy Installation & Maintenance
Quick-connect, testable wiring terminals simplify on-site installation and routine maintenance work.
2. Core Functions
- Protection Functions
Transformer differential protection with voltage supervision and measurement capabilities, compatible with high-resistance and low-resistance neutral earthing schemes. Optional arc flash protection and high-speed trip outputs further boost equipment safety.
- Measurement Functions
Supports process bus communication for sampled value transmission per IEC 61850‑9‑2LE, acquiring analog voltage sampled measurements.
- Control Functions
Local and remote control of transformer high-voltage side circuit breakers for remote operational management.

3. Application Scenarios
4. Operation & Maintenance Guide
- Operating Interface
The human-machine interface consists of display screens, single-line diagrams, measurement panels and a main menu navigation system.
- Status & Fault Indicators
Built-in diagnostic LEDs including Ready, Start and Trip for real-time device status and fault alarm indication.
- Parameter Configuration
Users can navigate between the main menu, single-line diagram view and measurement panels to view and modify all setpoint parameters.
Component Part Number List
Product Scope of Our Department
PLC modules, DCS processors, IO modules, DI digital input modules, DO digital output modules, network communication modules, Ethernet modules, motion control modules, analog input modules, redundant power supply modules, relay input modules, relay output modules, CPU processor modules.
Distributed Control System (DCS)
Programmable Logic Controllers (PLC)
- Allen‑Bradley:
SLC500: 1747/1746 series MicroLogix: 1761/1763/1762/1766/1764
CompactLogix: 1769/1768 series Logix5000: 1756/1789/1794/1760/1788 series PLC‑5: 1771/1785
- GE Fanuc:
IC693 / IC695 / IC697 / IC698 / IC200 / IC660 / IC670 CPU modules, communication modules, analog & digital I/O modules;
EX2000 / EX2100 excitation system boards, IS200 & DS200 series control boards.
Safety Instrumented System (SIS) & Vibration Monitoring (Bently Nevada)
Motorola VME Industrial Hardware
XYCOM: VME bus I/O boards and CPU processor modules