The IS220PTURH1AD serves as a primary turbine protection pack within GE's Speedtronic Mark VIe control architecture.

This module delivers critical safety functions including overspeed protection and turbine trip logic for gas and steam turbine applications.

Technical Specifications Overview

Pre-Installation Requirements

Before mounting the IS220PTURH1AD, verify the control cabinet meets environmental standards. The module requires IP54 protection class minimum and adequate ventilation to prevent thermal buildup.

Ensure the TTURH1C terminal board is properly secured and all power sources are de-energized per NFPA 70E safety protocols.

Physical Installation Procedure

Mount the IS220PTURH1AD to the TTURH1C terminal board using the integrated locking mechanism.

The module features Euro-style terminal blocks compatible with standard Mark VIe wiring practices. Connect the DC-62 pin interface carefully, ensuring proper alignment to prevent pin damage.

Torque specifications for terminal connections typically range 0.5–0.6 N·m for reliable electrical contact.

Electrical Configuration

The IS220PTURH1AD accepts 24 V DC nominal power input through a 3-pin connector. Speed sensor inputs support passive magnetic pickups with voltage ranges of -15 to +15 V DC.

The TRPA voltage detection inputs handle 16–140 V DC signals for trip solenoid monitoring. All E-stop input circuits operate within 18–140 V DC parameters.

Network Integration

Configure dual Ethernet connections for redundant communication paths. The module supports auto-reconfiguration capabilities, enabling automatic firmware and parameter downloads from the controller. Enable this function through Toolbox ST Component Editor to streamline commissioning. Network configuration follows standard Mark VIe topology with SRTP protocol support.

Calibration and Testing

Verify speed input sensitivity using a signal generator simulating 2 RPM minimum detection threshold. The median speed signal serves both control functions and primary overspeed trip protection.

LED indicators on the front panel display operational status: green for normal operation, red for fault conditions, and amber for configuration mode.

Commissioning Checklist

1. Verify all mechanical connections secure

2. Confirm power supply voltage stability within 27.4–28.6 V DC range

3. Test speed input channels with calibrated signal source

4. Validate Ethernet communication redundancy

5. Execute trip function tests in manual mode

6. Record baseline diagnostic data

Operational Statistics

Industrial data indicates proper installation of primary trip modules reduces unplanned turbine outages by approximately 35%.

The Mark VIe platform, including IS220PTURH1AD modules, monitors over 12,000 turbines globally with average availability exceeding 99.7% in combined cycle applications.

Troubleshooting Common Issues

Maintenance Recommendations

Schedule annual inspection of terminal connections and cooling vents.

Maintain spare inventory for critical applications.

Contact Information

For technical support or procurement inquiries regarding IS220PTURH1AD modules:

Apter Power
Sales Manager: May
Email: sales8@apterpower.com