Description
1. At-A-Glance Executive Brief
- Model: MVTT14B1BA0772C (MVTT 14 Series)
- Brand: Alstom (ABB / ASEA Heritage)
- Part Type: Static Digital Time Delay / Protection Relay
- Lifecycle status: Legacy Substation Hardware Support
- Weight: ~1.2 kg
- Core Function: Precision Time Delay and Auxiliary Protection Tripping
2. Technical Introduction
Substation protection schemes require highly dependable timing devices to coordinate tripping sequences and prevent cascading faults across power transmission grids. When legacy electromechanical or early static timers drift out of calibration, utility operators face risks of mistripping or delayed fault clearance. The Alstom MVTT14 series static time delay relay provides dependable, repeatable timing logic for high-voltage switchgear and control spaces, ensuring proper discrimination margins and safeguarding critical power apparatus without requiring complex software configurations.
3. Core Technical Specifications
| Parameter | Value |
| Manufacturer | Alstom (ABB / ASEA Heritage) |
| Product Series | MVTT 14 Static Time Delay Relay |
| Part Code Structure | MVTT14B1BA0772C |
| Mounting Type | Flush / Panel / Rack Mount Case Options |
| Contact Configuration | Output Tripping and Signaling Contacts |
| Auxiliary Supply | Standard Substation Control Voltages |
| Environmental Tolerance | Please refer to the OEM datasheet for complete environmental tolerances. |
4. Field Engineer’s Tech Notes
- Auxiliary Voltage Verification: Before energizing, verify that the station auxiliary DC voltage matches the relay’s rated input range, as supplying incorrect control power can inhibit internal timing oscillators or damage power supply components.
- Timing Calibration Check: Periodically inject test signals into the input terminals using a secondary injection test set to verify drop-out and pick-up delays against the front-panel dial or digital setting configurations.
5. Adaptive QA & Testing Protocol
Prior to inventory dispatch, each relay is mounted on a specialized test bench to verify internal power supply regulation, time-delay accuracy across multiple setpoints, and output contact closure reliability. We conduct insulation resistance (megger) testing on terminals against the relay housing to ensure dielectric strength and personnel safety. Complete test documentation and inspection reports are available upon request.
6. Buyer’s FAQ
- Q: What warranty coverage is included with this relay?
A: All hardware purchases are backed by a standard 12-month replacement warranty covering structural and operational performance from the invoice date.
- Q: How is the unit packaged to prevent transit damage?
A: Every relay is carefully wrapped in protective cushioning materials, surrounded by dense foam, and packed inside a heavy-duty cardboard carton.
- Q: Is this part supplied as new surplus or refurbished?
A: Inventory status is precisely classified as either New Surplus (NSFP) or fully tested factory-refurbished hardware; contact our sales team to verify current batch availability.
