Product Description

Dold BD9080.12/61

The Dold BD9080.12/61 is a versatile multifunction measuring relay from the VARIMETER PRO series, designed for comprehensive monitoring of 3-phase AC mains. It reliably detects and signals various network faults, including overvoltage, undervoltage, incorrect phase sequence, phase failure (even with regenerated voltage), and asymmetry. Featuring an LCD display for easy visualization of measured values and parameters, the BD9080.12/61 offers adjustable thresholds and time delays to prevent nuisance tripping. This model, with its specific /61 variant features (requiring an AC 230V auxiliary supply), is suitable for demanding industrial applications requiring precise and dependable mains protection to safeguard equipment and ensure operational continuity.

Technical Specifications:

Type: Multifunction Measuring Relay
Model: BD9080.12/61
Monitored System: 3-phase AC mains (3P+N or 3P selectable)
Nominal Voltage (Monitored Un): 3 AC 400 / 230 V (L-L / L-N)
Auxiliary Supply Voltage (Us): AC 230 V, 50/60 Hz
Frequency Range: 45 … 65 Hz
Monitoring Functions:
- Overvoltage (Umax): Adjustable 1.0 … 1.3 Un
- Undervoltage (Umin): Adjustable 0.7 … 1.0 Un
- Phase Sequence
- Phase Failure (detection with regenerated voltage > 60% Un)
- Asymmetry: Adjustable 5 … 25 %
Measuring Principle: True RMS
Display: LCD for measured values, parameters, and fault indication
Output Contacts: 2 changeover contacts (2 CO)
Contact Switching Capacity (AC1): 5 A / 250 VAC
Contact Switching Capacity (DC1): 5 A / 24 VDC
Time Delays:
- Start-up delay (tv): Adjustable 0 … 60 s
- Tripping delay (ta) for Umin, Umax, Asymmetry: Adjustable 0.1 … 60 s
- Tripping delay for phase sequence/failure: < 200 ms
Operating Temperature: -25 °C to +60 °C
Storage Temperature: -40 °C to +70 °C
Degree of Protection (Housing / Terminals): IP40 / IP20
Mounting: DIN rail (35 mm) according to EN 60715
Overall Width: 35 mm
Standards: IEC/EN 60255-1, IEC/EN 60947-5-1