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- ABB
- RET615E-1G/RET615E_1G
- Transformer Protection and Control
- Sweden
- 177 × 214 × 270 mm
- 4.1kg
- Xiamen, China
- New & In Stock
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We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
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Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
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We provide 7*24 hours service to our customers. We will be there whenever you need us.
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All our products are priced very favorably because we have our own warehouse and supply.
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RET615E-1G / RET615E_1G — Detailed Product Overview
1. Product Introduction
The RET615E-1G (RET615E_1G) is a compact transformer protection and control relay designed for medium-voltage distribution and sub-transmission systems. It is part of the Relion® 615 series, which is widely deployed in modern power automation environments.
This device integrates protection, control, monitoring, and measurement functions into a single intelligent electronic device (IED). It is primarily intended for protecting two-winding power transformers, ensuring safe and stable operation under normal and fault conditions.
The relay is engineered for flexibility and ease of use, allowing configuration for different transformer sizes and applications. Its modular design and standardized communication support make it suitable for both conventional and digital substations.
2. Key Technical Parameters
| Parameter | Specification |
|---|---|
| Product Model | RET615E-1G / RET615E_1G |
| Product Type | Transformer Protection & Control Relay |
| Series | Relion® 615 Series |
| Rated Auxiliary Voltage | 24–250 V DC / 100–240 V AC |
| Rated Current | 1 A / 5 A |
| Frequency | 50 / 60 Hz |
| Power Consumption | ≤ 20 W |
| Protection Functions | Differential, Overcurrent, Earth Fault, Thermal |
| Control Functions | Breaker control, interlocking logic |
| Communication Protocols | IEC 61850, Modbus RTU/TCP, DNP3, IEC 60870-5-103 |
| Ethernet Ports | 1–2 ports (depending on configuration) |
| Digital Inputs | Up to 24 |
| Digital Outputs | Up to 16 |
| Analog Inputs | Current & voltage inputs supported |
| Event Recording | ≥ 1000 events |
| Operating Temperature | -25°C to +55°C |
| Storage Temperature | -40°C to +85°C |
| Humidity | 5%–95% non-condensing |
| Mounting Type | Flush / Panel mounting |
| Dimensions | 177 × 214 × 270 mm |
| Weight | 4.1 kg ( ) |
3. Functional Features
The RET615E-1G provides a complete set of transformer protection and automation features.
It includes transformer differential protection with high sensitivity and stability, ensuring fast detection of internal faults such as winding short circuits.
Backup protection functions such as overcurrent and earth fault protection ensure system safety even if primary protection fails.
Thermal overload protection monitors transformer heating conditions and helps prevent insulation damage.
The relay also provides breaker failure protection and voltage-based protections to enhance system reliability.
In addition, the device supports disturbance recording, event logs, and waveform capture, which are essential for fault analysis and maintenance.
4. Applications
The RET615E-1G is widely used in different power system environments.
It is commonly installed in utility substations for transformer protection in distribution networks.
In industrial plants, it protects transformers used in heavy industries such as metallurgy, petrochemical processing, and manufacturing.
It is also suitable for renewable energy applications, including wind and solar farms, where transformer reliability is critical for power conversion and grid connection.
The relay can be used in commercial infrastructure such as airports, hospitals, and large buildings where uninterrupted power supply is required.
5. Product Advantages
1. Integrated Design
Combines protection, control, and monitoring in a single unit, reducing panel space and wiring complexity.
2. Reliable Protection
Provides accurate and fast fault detection, minimizing equipment damage and downtime.
3. Flexible Configuration
Supports multiple application configurations, making it adaptable to different transformer types.
4. Strong Communication Capability
Compatible with modern and legacy protocols, ensuring smooth integration into existing systems.
5. User-Friendly Interface
Equipped with a local HMI and configurable logic for easy operation and maintenance.
6. Compact Structure
Optimized size and weight make it suitable for space-constrained installations.
6. Brand & Series Information
| Category | Details |
|---|---|
| Brand | ABB |
| Series | Relion® 615 Series |
| Product Family | Transformer Protection Relay |
| Technology | Numerical Protection Relay |
7. Recommended Models (Same Series / Related)
| Model | Description | Key Parameters |
|---|---|---|
| RET615E-D | Transformer protection variant | 24–250V DC, differential protection, 4.0 kg |
| RET615E-G | Extended transformer protection | Supports advanced communication, 4.2 kg |
| REF615E-1G | Feeder protection relay | 1/5A input, compact, ~3.5 kg |
| REM615E-1G | Motor protection relay | Thermal + overload protection, ~2.5 kg |
| REU615E-1G | Voltage protection relay | Fast response, voltage monitoring |
8. Recommended Popular Models (Same Brand)
| Model | Description | Key Parameters |
|---|---|---|
| REG670 | Generator protection relay | High-voltage support, modular system |
| RET670 | Transformer protection relay | Advanced differential protection |
| REL670 | Line protection relay | Distance protection, HV systems |
| REC670 | Bay control relay | Control + monitoring integration |
| REF615 | Feeder protection relay | Compact MV protection |
9. FAQ (10 Q&A)
Q1: What is the primary function of RET615E-1G?
A: It is used for transformer protection, control, and monitoring.
Q2: What type of transformers can it handle?
A: It is mainly designed for two-winding transformers.
Q3: Does it support modern communication standards?
A: Yes, it supports IEC 61850 and other industrial protocols.
Q4: Is it suitable for industrial use?
A: Yes, it is widely used in industrial and utility environments.
Q5: What protection functions are included?
A: Differential, overcurrent, earth fault, and thermal protection.
Q6: Can it record faults?
A: Yes, it includes event logs and disturbance recording features.
Q7: What is the installation method?
A: It supports panel and flush mounting.
Q8: Is the configuration customizable?
A: Yes, it allows flexible configuration based on application needs.
Q9: What is the approximate weight?
A: About 4.1 kg ( ), depending on configuration.
Q10: Can it be used in renewable energy systems?
A: Yes, it is suitable for wind and solar applications.