1840DDBX

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Protection Relays & Systems refer to a set of electric connecting and control system that can detect, identify, understanding, isolate and protect fault, improve power system reliability and safety, reduce maintenance workload and ensure uninterrupted power supply. The 1840DDBX is a type of electric protection device which has a wide application field and working principle.

The 1840DDBX is suitable to be used for the surveillances and protections of motor, transformer, water-cooled cable, generator, load and other electrical equipment. This device is specifically designed to detect the loss of current balance in an ungrounded three-phase system and it can identify and protect against abnormal static conditions. Furthermore, the 1840DDBX also offers higher level of security against ground faults in a 17.2- or 34.5-kilovolt system.

This protection device relies on the resistive relationship between the neutral-point current of various phase lines. When the unbalanced current reaches the rated value, differential protection can be realized. It allows simultaneous monitoring of other protection functions such as line-to-neutral differential protection. Other protection functions includes efficient monitoring of the earth-fault current, phase current, line-to-line current and ground-fault current.

Apart from that, the 1840DDBX is constructed with advanced electronic circuit design and advanced production process which makes it stable in under-voltage, short-circuit and insulation detection. It can accommodate a variety of wiring connection, allowing different voltage levels of up to 10 seconds.

The 1840DDBX also applies advanced signal conditioning principles such as optical isolation and frequency-response filtering to reduce false tripping and mitigate interference due to external voltage, frequency and temperature fluctuations. Since it also has triple monitoring circuits that ensure its unique failure detection levels, it can help reduce downtime without compromising safety.

In conclusion, the 1840DDBX protection device is an essential device for the protection of electrical equipment from over-current, under-voltage, short-circuit and other abnormal conditions. Additionally, it also provides enhanced safety and security to power systems. Its advanced electronic circuit design and signal conditioning features ensure its reliability and accuracy even in the most demanding environments. As such, it is an ideal device for private, industrial and commercial applications.

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