General Electric IS220PPRAH1A
General Electric IS220PPRAH1A
General Electric IS220PPRAH1A
General Electric IS220PPRAH1A
General Electric IS220PPRAH1A
General Electric IS220PPRAH1A
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IS220PPRAH1A

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General Electric IS220PPRAH1A turbine protection I/O pack is a high-reliability module used for turbine protection applications, integrating speed measurement, trip relay control, and dual IONet communication.
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Technical specifications for IS220PPRAH1A

  • Manufacturer:
    General Electric
  • Part Number:
    IS220PPRAH1A
  • Product Family:
    GE Mark VIe Distributed I/O
  • Product Type:
    Turbine Protection I/O Pack
  • Stock:
    1
  • Input:
    28 Vdc, 0.5 A max
  • Power Supply:
    Min 27.4 V dc, Max 28.6 V dc
  • Ambient Temperature Rating:
    -30 to + 65°C (-22 to + 149°F)
  • Protection rating:
    IP20
  • Network interface:
    Dual 100 Mbps IONet
  • Speed ​​measurement channels:
    6 pulse inputs
  • Frequency range:
    2 Hz to 20 kHz
  • Trip relays:
    3 magnetic latching relays
  • Contact capacity:
    125 VDC @ 5 A
  • Weight:
    0.4 kg
  • Estimated shipping dimensions:
    6x12.8x8.3cm
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Installation Firmware Application Scenarios

Features:

  • Processes six pulse inputs across a wide frequency range for accurate rotational speed detection.
  • Dual 100 Mbps IONet interfaces ensure stable and redundant data exchange with control systems.
  • Three magnetic latching relays provide high-capacity switching for emergency shutdown operations.
General Electric IS220PPRAH1A is widely used in turbine protection systems where real-time monitoring and rapid response are required. It supports critical applications involving steam, gas, and hydro turbines by processing speed inputs and executing protection logic. The module integrates directly into turbine control architectures and provides stable performance under industrial conditions. Its electrical design supports consistent operation across a defined voltage range, ensuring reliability in demanding environments.

In operation, IS220PPRAH1A continuously processes six pulse signals to monitor turbine speed across a broad frequency range. This data is transmitted through dual 100 Mbps IONet interfaces, allowing seamless integration with control and protection systems. The module's trip logic relies on magnetic latching relays that deliver fast and stable switching performance. These features make IS220PPRAH1A suitable for applications requiring precise overspeed detection and immediate shutdown capability.

IS220PPRAH1A also supports flexible system configuration through compatibility with IS200TREAH1A terminal boards and IS200WREAH1A daughter boards. These combinations allow deployment in hazardous locations while maintaining safety performance. The module's robust design and environmental tolerance from -30°C to +65°C enhance its usability across various industrial sectors. As a result, IS220PPRAH1A provides a dependable solution for turbine protection and emergency control scenarios.

The IS220PPRAH1A General Electric Turbine Protection I/O Pack may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
General Electric IS220PPRAH1A Turbine Protection I/O Pack Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
General Electric IS220PPRAH1A Turbine Protection I/O Pack Specs

General

  • Manufacturer General Electric
  • Model IS220PPRAH1A
  • Condition New Original ready stock
  • Product Family IS220PIOAH1A,IS220PPDAH1A,IS220PPRAS1A
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Insertion/Removal Method: Supports full-load hot-swapping, can be directly inserted into the TREA terminal block without disconnecting the control cabinet's main power supply.
  • Fastening Structure: Employs a double-sided anti-loosening integrated screw design to ensure a stable connection between the module and the base plate under mechanical vibration.
  • Grounding Specification: The module base integrates a grounding metal spring, automatically completing safe grounding and shielding current distribution when inserted into the rail.
  • Spacing Requirements: At least 2 cm of air convection clearance must be maintained at both ends to ensure natural heat dissipation of the module within the cabinet without a fan.
  • Redundancy Synchronization: Built-in dynamic lockstep monitoring firmware, comparing the logic execution flow and arithmetic state of the internal dual microprocessors in real time.
  • Online Upgrade: Supports online flash download of firmware via ToolboxST software, ensuring uninterrupted protection circuitry during upgrades.
  • Signature Verification: The firmware features a digital encryption signature mechanism to prevent unauthorized or maliciously modified code from running within the module.
  • Anomaly Recovery: Integrates dual hardware watchdog reset firmware, enabling safe restart within microseconds in the event of code crashes.
  • Gas Turbines: Serves as the core for distributed overspeed tripping and emergency safety shielding in heavy-duty gas turbines such as the GE 9FA and 7FA.
  • Industrial Steam Turbines: Deployed in petrochemical drive steam turbines for monitoring unit shaft voltage and transient reverse leakage flux speed regulation protection.
  • Compressor Units: Used in the power turbine section of bulk chemical air compressors to perform emergency braking in the event of a sudden runaway accident.
  • Nuclear Power Steam Turbines: Serves as the end-effector of the Mark VIeS safety system in half-speed saturated steam turbines in the conventional island of nuclear power plants.
Description
General Electric IS220PPRAH1A operates as a turbine protection I/O pack within industrial control and safety systems. It works with a 28 Vdc power input with a maximum current of 0.5 A and maintains stable operation within a supply range of 27.4 Vdc to 28.6 Vdc. Designed for harsh environments, the module supports an ambient temperature range from -30°C to +65°C and features an IP20 protection rating.

IS220PPRAH1A integrates dual 100 Mbps IONet network interfaces to ensure reliable communication with control systems. It processes six pulse speed measurement channels, covering a frequency range from 2 Hz to 20 kHz. These capabilities enable precise turbine speed monitoring, which is critical for overspeed detection and protection logic execution in rotating equipment systems.

The module is equipped with three magnetic latching trip relays, providing fast and stable switching performance during protection events. Each relay supports a contact capacity of 125 VDC at 5 A, allowing direct control of shutdown circuits. This structure ensures that IS220PPRAH1A can respond effectively to emergency turbine conditions.

IS220PPRAH1A is designed for use with approved accessory combinations, including terminal board IS200TREAH1A and daughter board IS200WREAH1A. These configurations enable deployment in hazardous locations, expanding its suitability across power generation and industrial turbine environments. The modular architecture improves system integration flexibility while maintaining safety compliance.

In turbine protection systems, IS220PPRAH1A plays a key role in monitoring operational speed and executing shutdown commands when abnormal conditions are detected. Its dual-network redundancy enhances communication reliability, while robust electrical specifications ensure consistent operation under industrial stress conditions. This makes IS220PPRAH1A suitable for high-demand turbine protection and control applications.
Revisions

Revision Part #

Also known as

IS220PPRAH1AB
IS220PPRAH1A-B, Series B, Rev B
Alternative Names
IS22OPPRAH1A IS220PPRAHIA IS220PPDAH1B IS220PIOAH1A IS220PDIAH1A IS220PPDAH1A IS220PPRAS1A IS220PPRFH1A
Technical notes
Purpose-built for zero-fault turbine trip loops, the GE IS220PPRAH1A deploys dual-core lockstep microprocessors to execute critical overspeed protection diagnostics in less than 15 milliseconds.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What role does General Electric IS220PPRAH1A play in turbine safety systems?
General Electric IS220PPRAH1A processes turbine speed signals and manages protection logic to support emergency shutdown operations.
How does IS220PPRAH1A measure turbine speed?
IS220PPRAH1A uses six pulse input channels operating within a 2 Hz to 20 kHz frequency range for accurate speed measurement.
Can IS220PPRAH1A operate in harsh environmental conditions?
IS220PPRAH1A supports operation from -30°C to +65°C and includes an IP20 protection rating for industrial environments.
Does IS220PPRAH1A support direct shutdown control?
IS220PPRAH1A uses three magnetic latching relays with 125 VDC at 5 A contact capacity for turbine trip functions.

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