WIND FARM FAULT INDICATORS

Features and Benefits

• Line-powered operation for longer life and limited maintenance (no batteries required)
• Current trip value up to 1500 A with delayed trip response time
• Remote display options that allow quick determination of indicator status without the need to open medium-voltage compartments
• Easy installation on separable connector components with capacitive test points
• For installation in transformers, switches, and junction boxes
• Units available that work with cold-shrink silicone medium- voltage terminations
• Auxiliary contact output option for connection to SCADA for remote monitoring

Wind turbine outputs are fed through a transformer and distributed overhead or underground to a collector substation. The voltage will then be stepped up by the collector substation transformer to the utility transmission voltage. A single fault can disable from one to an entire line of turbines.

SEL fault indicators help operations personnel quickly deter- mine the location of the fault, isolate the faulted section, and restore the balance of the wind farm.

Electrostatic Reset

• High-voltage ac electric field powers the ERL.
• ERL automatically resets upon restoration of system voltage.
• Inrush restraint feature prevents false tripping during recloser operations.
• Reflective red target (the largest display in the industry) is easy to spot, both at night and during the day.
• Zero maintenance: there is no battery to replace or monitor.

Test Point Reset (shown with remote display)

• Most economical solution for underground applications.
• Powered from voltage present at T-body test point.
• Easy to install on most brands of 600 A class elbows with capacitive test points.
• Automatically resets upon restoration of system voltage.
• Works independently of load current.
• Ideal for pad-mounted transformer and switchgear applications.
• Features remote display versions that eliminate the need to open an enclosure cabinet to determine indicator’s status.
• Allows access to the test point with simple removal of the fault indicator.
• Compatible with SCADA through the auxiliary contact option.
• Prevents false tripping due to adjacent phase effects with junction shield option.

Three-Phase Voltage Reset Device

• No batteries required.
• Voltage powered from BIP.
• No T-body capacitive test point required.
• Automatic reset after BIP voltage restoration.
• Operation is independent of load current.
• Up to 1500 A trip value (higher on request).
• Several remote display options available.
• Auxiliary contact option for SCADA compatibility.

CR—Current Reset

• Automatic reset upon restoration of load current.
• Closed-core design provides adjacent phase immunity.
• Available for single- and three-phase applications.
• Choose from BEACON™ LED, target, and combination displays, depending on your application and operating practices.
• Ideal for installation in pad-mounted equipment without elbow test points; install the fault indicator outside of the influence of the ground return path of the cable’s concentric neutral.
• Installation on low-voltage secondary lines is an ideal fault-finding solution in industrial environments.
• Choose the auxiliary contact option for SCADA compatibility.
• Fault-powered current reset models also available for low-load current applications. Please consult factory.

Contact the WECS New Construction Team at (760) 251-0040 ex2667