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To ensure accuracy, please note that images may be representative. Refer to the product data sheet for detailed specifications.
| Manufacturer | TimeMark |
| Manufacturer Product Number | 27/SG |
| Description | Current Monitor Relay; 24V DC; 2...15 s (adjustable) |
| Datasheet | Download Datasheet |
The TimeMark 27/SG is a true RMS current monitor. It measures the true RMS current and trips on low or high current, each with its own delay or disabled; the relay operation is user selectable.
Sensing: direct 1-5 A; external CT above 5 A (TimeMark 276). Current: 0.5-5 A AC direct; up to 1200 A with an external CT (5:5 to 1200:5). Control supply: 24 V DC. Trip point: low set point +1% to 1200 A, in 0.5 A steps. Drop-out: 1 A to the high set point -1%, in 0.5 A steps. Hysteresis: 1-15% of set point (1% steps). Start delay: 2-15 s (adjustable). Trip delay: 0-20 s (adjustable, high and low independent). Reset delay: 1-300 min (adjustable). Reset: automatic or manual (selectable).
Output: 2 x SPDT (silver with gold flash), 10 A at 240 V AC resistive; 4 A general use at 120 V AC; 2 A general use at 240 V AC; C300 pilot duty. Mounting: DIN rail. Approvals: cULus Listed. It operates from -29 to +54 °C.
| Category | |
| Manufacturer | TimeMark |
| Model | 27 |
| Monitoring Function | Over and Under Current (True RMS; each trip enabled or disabled) |
| Sensor Type | Direct 1-5 A; external CT above 5 A (TimeMark 276) |
| Current Range | 0.5-5 A AC direct; up to 1200 A with an external CT (5:5 to 1200:5) |
| Pickup Current Setting | low set point +1% to 1200 A, in 0.5 A steps |
| Dropout Current Setting | 1 A to the high set point -1%, in 0.5 A steps |
| Input Voltage | 24V DC |
| Trip Delay | 0...20 s (adjustable, high and low independent) |
| Sensing Delay on Power-Up | 2...15 s (adjustable) |
| Hysteresis | 1-15% of set point (1% steps) |
| Reset Delay | 1...300 min (adjustable) |
| Reset Method | Automatic or manual (selectable) |
| Contact Configuration | 2 x SPDT (silver with gold flash) |
| Number of Poles | 2 |
| Output Rating | 10 A at 240 V AC resistive; 4 A general use at 120 V AC; 2 A general use at 240 V AC; C300 pilot duty |
| Mounting Type | DIN Rail |
| Rated Power | 2 W (24VDC) |
| Operating Temperature (Storage) (°C) | -29...+54 |
| Approvals | cULus Listed |