General Description
The ADR211A is a single element communicable OC /EF (the setting rang cove both phase / EF requirement) relay with Instantaneous high set.
| ANSI | Protection Functions |
| 50/50N | Instantaneous Protection (OC/ EF-Inst.) |
| 51/51N | Time Over current Protection (OC/ EF-IDMT.) |
| *64N | Restricted Earth Fault. |
| * The Relay can be use ether phase or EF or REF. |
| Model | Functional Details | Cabinet Style |
| ADR211A-AM10101 | Communicable Numerical Over current / Earth fault Relay with 10% to 250% setting. | CSA-150 |
| ADR211A-AM10201 | Communicable Numerical Earth fault Relay with sensitive 5% to 100% setting. | CSA-150 |
Numerical Single Pole OC/EF Protection Relay : ADR211A
Specifications
- Back - lit LCD display for settings.
- Display of fault current / Load current.
- Selection of Curve: Six selectable curves (Normal Inverse 1 (C1), Normal Inverse 2 (C2), Very Inverse (C3), Extremely Inverse (C4), Long Time Inverse (C5) & Definite Time (C6).
- Design using DSP technology.
- Latching of fault current up-to last 5 fault.
- Site selectable CT secondary.
- Relay can be made either IDMT or Define time.
- Programmable operating time in instantaneous element.
- Breaker Fail Function.
- Suitable For REF Protection.
- SCADA Compatibility (RS232 and RS485 Communication For model ADR211A).