K8AB-VS1 100/115VAC

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K8AB-VS1 100/115VAC application field and working principle

K8AB-VS1 100/115VAC series current and voltage monitor relays are designed for monitoring and protecting power-supply systems. The relays are applicable to 100/115Vac AC supply, AC motor and generator applications. It can detect over voltage, under voltage, over current and under current. The relay has two normally open and two normally closed contacts and a mechanical indicator for each application.

Functional Overview

The K8AB-VS1 relays are designed for current and voltage monitoring with the ability to turn on external alarms when a threshold limit is reached. The relay will maintain its set point when the AC power supply fails and will return sensing to the preset limit when AC power is restored. This ensures a secure and reliable monitoring capability.

The K8AB-VS1 relays are widely used for monitoring and protection of AC power supply, AC motors and generators. The mounting and removal of the relay is simple and safe. It does not use any mechanical contacts and thus provides greater reliability. The limit points in the relays are adjustable in increments of 5%). The relays are highly insulated and come with a built-in surge suppressor for maximum protection.

Topology and working principle

The K8AB-VS1 relays are based on a solid state topology with no moving parts or contacts. The relays are comprised of two sensing circuits: one for voltage and one for current. Each sensing circuit has a respective comparator circuit, which is used to compare the sensed voltage or current against preset thresholds. When either the upper or lower limit is met, the relay will trip and activate one of its two normally open contacts. A mechanical indicator is included with each relay for visual indication.

The K8AB-VS1 also has a built-in surge suppressor which is used to protect the relays from transient voltage surges. The relay will remain in a latched state even after the AC power fails. When the power is restored, the relay will reset itself and resume normal monitoring.

Applications and benefits

The K8AB-VS1 relays are designed for monitoring and protecting AC power supplies, AC motor and generators. The relays are widely used in industrial plants, power plants, airports and schools. They are also used to monitor and control energy use in energy management systems. Some of the benefits include:

• Cost effective and reliable monitoring and protection
• Easy to install and remove
• User adjustable upper and lower limit points
• Built-in surge suppressor for maximum protection
• Latched state in the event of AC power failure

Conclusion

The K8AB-VS1 relays are cost effective current and voltage monitoring relays. They are designed for applications such as AC power supply, AC motor and generator monitoring and protection. The relays are reliable, easy to install and remove and feature a built-in surge suppressor for maximum protection. The limit points are adjustable in increments of 5% and the relays remain latched even after AC power failure. They are widely used in industrial, commercial and energy management applications and provide increased reliability, cost savings and safety.

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