True RMS Current Monitor (Silver/Gold Contacts)
The MODEL 27 True RMS Current Monitor, SKU 27SG, provides precise current monitoring for diverse industrial applications. Its silver with gold flash contacts ensure reliable performance, particularly in low current scenarios. This unit accommodates an input AC current range from 0.5A to 1200A with an external CT, offering broad application flexibility. True RMS measurement capability ensures accuracy regardless of waveform distortion. Configurable settings include high and low trip delays from 0 to 20.0 seconds, adjustable hysteresis from 1 to 15%, and flexible automatic or manual restart options. With a repeat accuracy of ± 0.5% and an expected mechanical relay life of 10 million operations, the 27SG delivers consistent and durable operation. It is designed for DIN Rail 35mm mounting, simplifying installation and integration into existing control panels. Its robust Lexan 920 Polycarbonate enclosure further enhances durability.
1Ph Current Monitor
Specifications
| Contact Material | silver with gold flash contacts for low current |
|---|---|
| Input AC Current Range | 0.5A - 1200A with External CT |
| Input AC Current Range (at Terminals) | 0.5A - 5A at Terminals |
| Input Amps | 5A |
| Input Frequency | 50/60Hz (400Hz optional with jumper) |
| Input DC Power | 24 Volts, 2 watts |
| Output Rating (Resistive) | 240V AC, 10A |
| Output Rating (General Use) | 120V AC, 4A |
| Output Rating (General Use) | 240V AC, 2A |
| Output Rating (Pilot Duty) | C300 |
| Max Voltage on Current Terminals | 600V |
| Start-up Delay | 5 secs. Min. or Automatic reset delay setting (to allow for solid lock) |
| Output Contacts | SPDT x 2 10 Amps @ 240VAC |
| Repeat Accuracy | ± 0.5% (fixed conditions) |
| Reset Type | Manual or Automatic |
| Expected Relay Life (Mechanical) | 10 million operations |
| Expected Relay Life (Electrical) | 100,000 min. at rated load |
| Operating Temperature | -20°F to +130°F |
| Humidity Tolerance | 0-97% w/o condensation |
| Enclosure Material | Lexan 920 Polycarbonate UL 94 V-0 1.5 mm UL E45329 |
| Mounting | DIN Rail 35mm |
| Display Accuracy | +/- 0.5% |
| Display Update Rate | updated every second and re-initialized every 30 seconds |
| Config: High current | Enable/Disable |
| Config: High current Set Range | Low Set + 1% to 1200A in 0.5A steps |
| Config: High trip delay | 0 to 20.0 seconds in 0.1Sec steps |
| Config: Low current | Enable/Disable |
| Config: Low current Set Range | 1A to High Set -1% in 0.5A steps |
| Config: Low trip delay | 0 to 20.0 seconds in 0.1Sec steps |
| Config: Relay operation | Current High/Low option, Separate High/Low relays, DPDT, Other faults DPDT |
| Config: Relay operation on fault | De-energize on fault, Energize on fault |
| Config: High/Low Hysteresis range | As a % of set point 1 to 15% in 1% increments |
| Config: External CT ratio | 5:5 to 1200:5 |
| Config: Start-up delay | 2 to 15 seconds |
| Config: Restart | Automatic or Manual |
| Config: High or No High Restart when Automatic | High Restart, No High Restart |
| Config: Automatic Restart Delay range | 1 to 300 Minutes in 1 Minute steps |
