Protective Relays could be characterized as circuit managers with varying degrees of supervisory and control capabilities depending on the complexity and criticality of the circuit. They are designed to recognize abnormal or fault conditions, and to isolate the affected portion or the electrical system. Not only does this allow the unfaulted portion of the electrical system to continue to function normally, but it diminishes the impact of the faulted portion of the system. Changes to power system circuits and the coordination of protective devices can change due to age, loading, environmental impacts, new construction, etc. It is therefore critical that these devices function properly and are appropriately coordinated when they are called into action.READ MORE >>
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Relays are often utilized in electrical facilities as isolated switches or protective devices for various electrical equipment. Due to the mechanical operation of relays, the contacts are prone to contact degradation, so it is important to regularly test for the electromechanical, electronic and protection schemes to ensure safe and reliable operation, and to avoid a faulty relay system acting up during critical operations. To assess relays and protections schemes, consider investing in a relay test set or a power system simulator.READ MORE >>
Relays play a critical role in the protection of electrical power systems. They are used to monitor and control the operation of power system components. For example, if a protective relay were to senses a fault condition, it could tell a circuit breaker or some other protective device to open and thereby isolate the faulted portion of the circuit.READ MORE >>
The Doble M4000 M4100 Power Factor Insulation Analyzer sets the standard for power apparatus and insulation testing.
With its unique combination of test capabilities and artificial intelligence analysis software the M4000 M4100 is known in the industry as a highly trusted Power Factor/Tan-Delta instrument.READ MORE >>
The effective and efficient operation of a power grid is largely dependent on the relay scheme. The importance of this critical electrical component makes it essential to regularly test its health status using high-grade electrical test equipment.READ MORE >>
Time sensitive information such as protection tripping commands are a high priority and require a quick means of communication. In IEC 61850 environments, the GOOSEs (Generic Object Oriented Substation Events) are the mechanism for delivering status information. Published as multicast messages without being addressed to a specific receiver, this information is then distributed across the network allowing any IED or test set to retrieve it.READ MORE >>
Power factor tests compare the capacitive current to the resistive current used by a piece of equipment. If the capacitive current becomes large in relation to the resistive current, it indicates a potential problem with the insulation. Insulation breakdown often leads to equipment breakdown.
Protec Equipment Resources offers many power factor test sets for rent. These units apply voltage to the conductors while measuring losses to ground. By comparing the results to historical results, abnormal conditions can be easily identified. Further tests can help determine exactly where the problem exists.
While power factor testing usually involves transformers and breakers, tests can be useful on other types of equipment such as switches, motors and voltage regulators.
Each Protec office maintains a full complement of electrical test and measurement equipment. Offering equipment from all of the premiere manufacturers for rent, lease or purchase, Protec has the electrical testing equipment you need to get the job done.
Whether you're in the market for a Micro-Ohmmeter like the AEMC 6250 10A Micro-Ohmmeter, offering output up to 10 Amps, this test set is uniquely designed to conduct tests on both resistive and inductive material, with operator selection directly from the front panel.READ MORE >>