MVAX31S1DE0754A
Areva Trip Circuit Supervision Relay MVAX31S1DE0754A
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Areva Trip Circuit Supervision Relay MVAX31S1DE0754A
['Protection Relays', 'Areva', 'MVAX31 Trip Circuit Supervision'] Need Areva MVAX31S1DE0754A? Trip Circuit Supervision Relay for …
Specifications
| Brand | Areva |
|---|---|
| Model Number | MVAX31S1DE0754A |
| Official Product Name | MVAX31 Trip Circuit Supervision Relay |
| Applicable System | Medium-Voltage Circuit Breaker Trip Circuit Monitoring |
| Product Type | Trip Circuit Supervision Relay |
| Equivalent Standard | IEC 60255 / IEEE C37.20.7 (per distributor) |
| Product Status | Legacy / Available as Spare (AREVA now GE Grid Solutions) |
| Supervised Circuit Voltage | 110 to 125 V DC |
| Response Time | < 100 ms fault detection; ~400 ms drop-off delay |
| Enclosure | Size 2 drawout case, panel mounted, IP30 |
| Operating Temperature | -25 to +70 deg C |
| Outputs | Form C relay contacts for alarm and trip block |
| Dimensions | approx 82 x 122 x 60 mm |
| Weight | approx 0.5 to 0.6 kg |
| Rated Auxiliary Voltage | 110 to 125 V DC (per S1DE0754A suffix) |
Product Description
['Protection Relays', 'Areva', 'MVAX31 Trip Circuit Supervision']
The Areva MVAX31S1DE0754A is a trip circuit supervision relay that continuously monitors the integrity of medium-voltage breaker trip circuits, detecting open circuits, short circuits, ground faults and supply loss in both open and closed breaker states, then issuing alarm or block signals.
Basic Product Information
- Detects open, short, ground faults and auxiliary supply loss
- Hand-reset mechanical flag and LED status indicators
- Supports Modbus RTU and IEC 60870-5-103 communication
- Continuous supervision of trip coil, wiring and auxiliary contacts
Technical Specifications
Version & Model Difference
The MVAX31 family supervises trip circuits in both breaker states (open and closed), an improvement over MVAX21 (closed-only). The S1DE0754A suffix indicates a Size 2 case and 110/125 V DC rating. AREVA T&D became Alstom then GE Grid Solutions; modern migration paths point to GE MiCOM P-series relays.
Application Scenarios
- 11 kV to 35 kV substation breaker monitoring
- Power generation plant breaker protection
- Industrial and refinery power distribution
Frequently Asked Questions
What does the MVAX31S1DE0754A supervise?
It continuously monitors breaker trip circuit integrity, detecting open circuits, shorts, ground faults and loss of auxiliary supply in both open and closed states.
What voltage rating applies?
The S1DE0754A suffix denotes a 110 to 125 V DC auxiliary and supervised-circuit rating.
Who manufactures it now?
It originated with AREVA T&D, later Alstom and now GE Grid Solutions; it is a legacy spare with migration options to GE MiCOM P-series.
What communication is supported?
It supports Modbus RTU and IEC 60870-5-103 for remote monitoring and SCADA integration.
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