Siemens 7UT6125-5EB91-1AA0-L0D Digital Differential Protection Relay
Siemens 7UT6125-5EB91-1AA0-L0D Digital Differential Protection Relay
The Siemens 7UT6125-5EB91-1AA0-L0D is a digital differential protection relay designed for transformers, generators, motors, and short cables. This unit features a 1/3 x 19" case with 3 binary inputs (BI), 4 binary outputs (BO), and 1 watchdog contact. It includes a 5A current transformer (CT) and operates on a supply voltage of 110-250V DC or 115-230V AC. Key functions include differential protection for transformers, generators, motors, and busbars (87 TGM L), overload protection (49), lock-out (86), and various time overcurrent protections (50/51).
This relay is essential for safeguarding critical power system components, ensuring selective fault clearing and preventing extensive damage. Its differential protection capabilities are vital for transformers, while its other functions provide robust backup protection for various electrical assets.
Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 7UT6125-5EB91-1AA0-L0D. We provide reliable access to essential industrial automation components, ensuring your systems remain operational and protected.
| Case | 1/3 x 19" |
| Binary Inputs | 3 |
| Binary Outputs | 4 |
| Watchdog Contact | 1 |
| Current Transformer | 5A |
| Supply Voltage | DC 110-250V, AC 115-230V |
| Trigger Level Binary Input | 88V |
| System Port | Modbus RS485 |
| Service Interface | DIGSI 4/Modem (RS232) |
| Functionality | Differential Protection (87 T G M L), Overload (49), Lock Out (86), Time Overcurrent (50/51) |