Product Description
Description: 3-Phase OL Relay/190-480V/RD1 Min./UCTD Min./Plus
| Product Information | | Resources |
| Manufacturer | Littelfuse - Symcom | | Product Category | Monitors | | Product Sub Category | Phase Monitor Relays | | Series | 777 Series |
| | |
Product Attribute
| Attribute Value
|
| Input Voltage (V) | 200 - 480 Vac |
| Maximum Input Power | 10 |
| Input AC Line Frequency (Hz) | 50 / 60 |
| Output Form | SPDT - Form C |
| Output Load Rating (VA) | Pilot Duty: 480 VA @ 240 Vac B300; General Purpose: 10 A @ 240 Vac |
| Full Load Amp Range (A) | 2 - 25 (looped conductors required); 25 - 90 (direct); 80 - 800 (external CTs required) |
| Timing Accuracy (%) | 5% ±1 s |
| Rapid Cycle Timer (s) | 0; 2 - 500 m |
| Restart Delay Range | All faults: 2 - 500 m; # of Restarts: All faults except undercurrent: 0; 1; oc1; 2; oc2; 3; oc3; 4; oc4; A; ocA (Automatic); Undercurrent: 0; 1; 2; 3; 4; A (Automatic) |
| Repeat Accuracy (%) | Voltage: ±0.5% of nominal voltage; Current: ±1% (<100 A direct) |
| Overvoltage Trip Voltage (%) | 172 - 528 V |
| Undervoltage Trip Voltage | 170 - 524 V |
| Voltage Unbalance Trip Point (%) | 2 - 15% or 999 |
| Voltage Accuracy (%) | ±1% |
| Overcurrent Trip Point | (20 - 100 A)
MULT of 80 - 140% of CT primary |
| Overcurrent Trip Class | 02 - 30; J02 - J30; L00 - L60; or OFF |
| Undercurrent Trip Point | 0; 10 - 98 A
MULT or 40 - 140% of CT primary |
| Undercurrent Trip Delay (s) | 2 - 255 m (standard) |
| Current Unbalance Trip Point (%) | 2 - 25% or 999 (disabled) |
| Current Accuracy (%) | ±3% (<100 A direct) |
| Ground Fault Current Trip Point (A) | (3 - 20)
MULT or 12 - 80% of primary CT or OFF |
| Ground Fault Accuracy (%) | ±15% |
| Sensor Hole Size | Max conductor size: 0.65 in (with insulation) |
| Short Circuit (kA) | 100 |
| Surge Protection | IEC: 61000-4-5 Level 3 2 kV line-to-line; Level 4 4 kV line-to-ground |
| Protection Class | IP20 (finger safe) |
| Pollution Degree | 3 |
| CT Ratio | 1 - 10; 100; 150; 200; 300; 400; 500; 600; 700; 800 |
| Address | A01 - A99 |
| Termination Type | Torque: 7 in-lbs |
| Mounting Method | Surface mount (4 - #8 screws) or DIN rail mount |
| Operating Temperature | -20° to 70°C (-4° to 158°F) |
| Storage Temperature (F/C) | -40° to 80°C (-40° to 176°F) |
| Humidity | 10 - 95% non-condensing per IEC 68-2-3 |
| Dimensions | 3.05 H x 3.85 W x 5.05 D in. (77.5 x 97.8 x 128.3 mm) |
| 777 Series - 3-Phase Current & Voltage Monitor |
Series Description: The 777 unit is a fully-programmable, electronic overload relay designed to protect any motor drawing 2-800 full load A (external CTs are required above 90 A). The 777 (family of products) is used for 3-phase, 200-480 V ac applications, with several specialized units for other voltage ranges and unique applications. Common applications include conveyor systems, HVAC equipment, saws and grinders, fan motors, and almost any pumping application. Some unique applications include use with a Subtrol* equipped Franklin submersible motor to detect high motor temperatures and applications where a fast linear trip is required
All of the overload relays provide unsurpassed protection by combining overload, voltage, phase loss and reversal, voltage and current unbalance, power monitoring, and underload based on current all in one package. For standalone applications, the units incorporate a 3-digit LED display that is used for programming, providing real-time operational information, and displaying diagnostic codes to aid in troubleshooting a fault condition. The units also feature a communications network port that can be used with communication modules listed in the 777 accessories section to form a Modbus, DeviceNet*, Profibus, or Ethernet network. Up to 99 units can be remotely monitored and controlled from a PC, PLC, or SCADA system, and data logging through a PC with the optional Solutions software. This capability allows for a simple, cost-effective way to meet new requirements for arc-flash safety. |
| Series Applications: Conveyor systems, HVAC equipment, Saws and grinders, Fan motors |
- Built-in display: Visual indication for programming, viewing real-time voltage or current, and last fault code
- Programmable voltage and current settings: Allows usage on wide range of systems
- 3 selectable restart options: Choose from automatic, semi-automatic, or manual to best meet individual application needs
- 3 programmable restart delay timers: Program separate restart delay time for rapid cycle protection, motor cool down, and dry-well recovery
- Remote display compatibility: Increases safety through remote display of real-time data and fault history without the need to open the cabinet. Aids with arc flash safety regulations
- Flexible reset: Reset can be done through a push button on the relay or remotely with optional 777-MRSW or OL-Reset remote reset kit
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