Product Description
Description: Monitors • Current Monitor Relays • Function: Undercurrent • Operating Voltage : 120VAC • Frequency : 50/60Hz • Power Consumption : 2W • Drop-out Adjustment : 0.1 - 1 A • Pick-up Set Point : Fixed at 5% above Drop-out set point • Output Contacts : SPDT 10A at 240VAC resistive • Mounting : 8-pin socket
| Product Information | Resources |
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| Specifications |
| Product Attribute | Attribute Value |
| Function | Undercurrent |
| Operating Voltage | 120VAC |
| Frequency | 50/60Hz |
| Power Consumption | 2W |
| Drop-out Adjustment | 0.1 - 1 A |
| Pick-up Set Point | Fixed at 5% above Drop-out set point |
| Repeat Accuracy | +/- 0.5% of set point |
| Trip Delay | 0.1 - 10 sec |
| Restart Delay | 0.1 - 300 sec |
| Timing Accuracy | +/- 5% |
| Reset Type | Automatic |
| Output Contacts | SPDT 10A at 240VAC resistive |
| Expected Relay Life | Mechanical: 10 million operations Electrical: 100,000 at rated load |
| Operating Temperature | - 20 to +131 oF |
| Humidity Tolerance | 0 - 97% w/o condensation |
| Enclosure Material | NORYL cover; 6/6 Nylon base |
| Mounting | 8-pin socket |
| Weight | 6.3 oz |
| Series Features |
| MODEL 171 1 AMP CURRENT MONITOR |
| Series Description: The Model 171 is an AC current monitor for detecting undercurrent conditions. The monitor contains a proprietary microcontroller-based circuit monitoring current passed through an internal shunt resistor and driving an electromechanical SPDT relay. Two status lights are provided to indicate relay status, fault condition, and timing. An adjustable trip delay is provided to prevent nuisance tripping and an adjustable restart delay has been provided for applications requiring a delay to start an additional load. When AC current is 5% or greater than the drop-out set point, the relay will pick-up after the completion of the restart delay. The RUN status light will blink during the restart delay and remain on when the relay energizes. When the AC current remains at or below the drop-out set point for a period longer than the trip delay, the relay will drop-out. The RUN status indicator will remain on during the trip delay time indicating the relay is still energized. The FAULT status indicator lights during an undercurrent condition. |
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