Model ISP Isolator/Surge Protector by Dairyland Electrical

The Isolator/Surge Protector (ISP) is a solid-state decoupler. The ISP provides DC blocking and AC continuity that benefits grounding in cathodically protected systems. The ISP is appropriate for applications that require greater than 15 kARMS fault currents. ISP lightning impulse protection levels are 75kA or 100kA - similar to other Dairyland decoupler products.

Attachments

pdf
Installation Guide
(Size: 0.95 MB)
pdf
Technical Literature
(Size: 1.62 MB)

  • ISP Overview

    The Dairyland ISP is the original solid-state AC conducting / DC blocking device designed for the corrosion prevention industry. The ISP product line features the most flexible and wide range of product ratings and applications available to the market. Additionally, the ISP provides the highest levels of AC fault-handling capability – up to the highest typical transmission system faults. With its design features and ratings, the ISP is the preferred device for power utility underground cable decoupling/bonding requirements.

    Features & Characteristics

    • Solid-state design replaces polarization cell technology.
    • No maintenance needed.
    • Fail-safe design.
    • Self-protection features built-in.
    • Simple field testing procedures with standard equipment.
    • Comprehensive testing available with In-Situ Tester (IST)
    • Flashing LED indicates device operation.
    • No energy/power requirements.
    • Unlimited number of operations.
    • Submersible enclosure.

     

     

  • Specifications

    AC FAULT CURRENT (AMPERES-RMS) 50/60HZ
    • 35kA at 1 cycle
    • 68kA at 1 cycle
    • 118kA at 1 cycle
    Threshold Voltage
    • 20V

    AC Steady-State Current (amperes – rms) 50 Hz

    • 90A
    • 120A

    Lightning Surge Current

    • 75kA crest (8 x 20 µs waveform)
    • 100kA (optional)

    Environmental rating:

    • NEMA 4X or 6P

    Model Number Description Chart

    Model Number Description

  • There is currently only 1 accessory for the Dairyland ISP. For more information and pricing, contact a Farwest representative today.

    ISP Tester
    (ISP Tester)
    Automated ISP Test Device