70EA06A-E Relay protection device

70EA06A-E Relay protection device

70EA06A-E is a relay protection device that can monitor the operating status of the power system in real time and detect various electrical faults, such as short circuit, overload, ground fault, etc. By detecting the abnormal changes of electrical volume such as current, voltage and frequency, the type and location of the fault are determined.
Fault isolation:
When a fault is detected, the relay protection device will act quickly to isolate the faulty device from the normal device and prevent the fault from expanding.
This is usually achieved by controlling the action of devices such as circuit breakers and isolation switches.
Protection selectivity:
When the relay protection device is in operation, only the faulty equipment or line should be cut out from the system as far as possible to avoid misoperation and unnecessary power failure.
It is necessary to realize the coordination between the upper and lower protection devices to ensure the selectivity of fault removal.
Reliability:
The relay protection device should have high reliability to ensure that it can operate correctly when needed to avoid rejection and misoperation.
It is necessary to improve the reliability of the device by means of redundant design and self-check function.
Rapidity:
The action of the relay protection device should be as fast as possible to reduce the impact of the fault on the equipment and system.
It is necessary to improve the speed of operation by optimizing the algorithm and improving the performance of the device.
Sensitivity:
The relay protection device should have a high sensitivity and be able to detect a variety of electrical faults, including minor faults.
It is necessary to improve the sensitivity of the device by selecting suitable protection principle and setting reasonable setting value.