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EATON EGF Series CurrentWatch Ground Fault Sensors
Eaton CurrentWatch EGF Series ground fault sensors are designed to protect equipment, industrial processes and personnel from damage due to ground fault conditions. They sense and monitor all current-carrying conductors in grounded single-and three-phase delta and wye systems.
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UWorking Mechanism
- These EGF Series ground fault sensors work by measuring the current flow in the circuit and comparing it to a reference level.
- The system includes a toroidal current transformer that is installed around the power conductor.
- This transformer measures the current flowing through the conductor and sends the signal to the sensor's circuitry.
- The circuitry of the sensor then compares the current signal to a reference level and detects any differences.
- If the current is flowing at a higher rate than the stated current flow, the sensor trips and opens the circuit to interrupt the current flow and prevent damage.
Features
- They feature a solid-state design that provides unlimited switching capability, zero off-state leakage, high switch speeds, high input-output isolation and superior resistance to shock and vibration.
- They have a flammability-rated plastic enclosure that offers excellent durability as well as resistance to heat & flame. They are ideal for protecting sensitive components by self-extinguishing flames in the event of a fire hazard.
- They are capable of withstanding temperatures ranging between -4 and 122 degrees Fahrenheit.
- They are available in NO / NC, solid-state or mechanical / latching relays, normally energised or normally de-energised contact options to meet different application needs.
Compatible Accessories
- Eaton's Din Rail Mounting Kit: This accessory allows for easy mounting of Eaton CurrentWatch ground fault sensors using the hardware included in the kit.
Standards and Approvals
- UL
- CE
- RoHS
Frequently Asked Questions
What is the difference between normally energised and de-energised contacts?
- A normally energised contact is the one that is closed when power is not being applied to the coil. When the coil is energised, the contact opens. It is also known as NC (normally closed) contacts and is ideal for applications like control systems for motors or valves.
- A normally de-energised contact, on the other hand, is in the open position when power is not being applied to the coil. As the coil is energised, the contact closes. It is also known as NO (normally open) contacts and is mostly used in applications which require emergency shutoff.
What is the function of a latching relay?
A latching relay is designed to maintain its position without power being applied to the coil. When the relay is activated, it switches its contacts from one position to another and the contacts remain in that position until the relay is deactivated by a second pulse of current. This type of relay is ideal for certain machinery or appliances which need to maintain a specific state even when power is removed.
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