RS PRO Digital Voltage Monitoring RelaysRS PRO is proud to present a complete range of control monitoring relays designed for single-phase or 3 phase systems. Each relay is packed with excellent features to ensure effective protection against all types of low voltage faults. These high-quality monitoring devices offer over-voltage and under-voltage protection, protect against voltage phase sequence, phase loss, and phase asymmetry, over & under frequency, and neutral open.Display ScreenThe front panel details on the display screen include fault window and menu feature parameter, line or phase voltage, delay timer status, time in seconds, percentage asymmetry, frequency in Hz, voltage, Instantaneous voltage, or other settable parameters and relay status.Four key programmingEscape, scroll up, scroll down and enterConnectionConnection for supply voltage and relay is illustrated on the side of the device.Features and BenefitsLCD Display with Green Backlight DIN Rail mounting True RMS Measurement @ 2kHz sampling rate Protection against Phase loss, Phase Sequence, Phase Asymmetry, Under Voltage, Over Voltage, Neutral fault, Over Frequency & Under Frequency Can be configured for 3-Phase 3-Wire or 3-Phase 4-Wire supplies,145-500VAC (DMA220 50-500VAC) Selectable overvoltage/ undervoltage, Asymmetry, Phase Loss, Phase Sequence, Over Frequency Under Frequency & Neutral Fault monitoring Prominent FeaturesAdjustable ON-OFF time delay Time Delay in seconds/minutes 5A Single and Dual relay outputs Two Separate Relay outputs with independent Programming Password protection Log of 5 previous faults for better monitoring Fail-safe/Non-Fail-safe relay configuration Latch (Manual-reset) and Non-Latch (Auto-reset) alarm modesRS PRO Digital Voltage Monitoring Relay Variants145-500 VAC, Digital Voltage Monitoring Relay, 1C/O = RS stock no: (223-7788) 223-7788 145-500 VAC, Digital Voltage Monitoring Relay, 1C/O + 1C/O = RS stock no: (223-7789) 223-7789 50-500 VAC, Digital Voltage Monitoring Relay with 85-300Vac/dc Auxiliary supply, 1C/O + 1C/O = RS stock no: (223-7790) 223-7790ApplicationsSwitchgear Control Gear Machine Control Mains Distribution Systems Meer informatie:  | | Monitoring Application: | Phase, Voltage | Electrical Phase: | 3 | Contact Configuration: | SPDT | Voltage Sensitivity: | Overvoltage Protection, Undervoltage Protection | Mounting Type: | DIN Rail | Phase Sensitivity: | Phase Loss, Phase Sequence, Phase Asymmetry | Time Delay: | 2 → 999s | Dimensions: | 36 x 90 x 67mm | Frequency Sensitivity: | Overfrequency, Underfrequency | Length: | 66.21mm | Maximum Frequency Sensed: | 45Hz | Maximum Operating Temperature: | +60°C | Minimum Frequency Sensed: | 65Hz | Minimum Operating Temperature: | -10°C | Operating Temperature Range: | -10 → +60°C |
|