ProTech-GII 8237-1600 Overspeed Protection | Voted Relays

Description

Product Description

• ProTech-GII 8237-1600 is a high-reliability overspeed protection device.
• It works with steam, gas, or water turbines of any size.
• The unit uses two-out-of-three voted architecture for safety.
• You can replace one module while the system stays online.
• Modbus communication enables easy integration into existing systems.
• It includes MPU detection and acceleration detection for better diagnostics.
• The coating resists sulfur contamination. Use it in class 3C2 environments.

Technical Specifications

• Brand: ProTech-GII
• Model: 8237-1600
• Dimensions: 13 x 17.5 x 6.25 inches
• Enclosure Type: IP56 – dust and water resistant (when installed properly)
• Input Voltage: 2 High Voltage Inputs OR 1 High Voltage + 1 Low Voltage
• Inrush Current: 10 A at 115 Vac, 20 A at 220 Vac
• Keypad/Display: 4.2 inch display and 15 keys per module
• Operating Temperature: –20 to +60 °C at 95% humidity
• Storage Temperature: –20 to +65 °C at 95% humidity
• Weight: Less than 23 lbs
• Measurement Range (Speed): 4 to 20 mA output
• Frequency Response: Supports MPU and acceleration detection
• Sensitivity: High accuracy for overspeed shutdown
• Linearity: Meets IEC 721-3-3 1994 standards
• Resolution: Trip levels set with precision
• Temperature Range: –20 to +60 °C operating
• Environmental Tolerance: IP56, sulfur resistant, 95% humidity
• Noise Immunity: Overvoltage protection II per IEC 60664-1
• Triple independent trip relays for redundant safety
• Low and high voltage power inputs for flexibility
• Internal generator for routine speed tests

Installation Guide

• Panel mount design with a backplane structure.
• Makes repairs and replacements easy.
• Install properly to maintain IP56 rating.
• No special tools required for mounting.

Debugging & Maintenance Convenience

• Triple module design allows online module replacement.
• Work on one module while two modules operate.
• Routine speed tests run via internal generator.
• Display and keypad per module simplify local debugging.
• No need to shutdown the turbine for most maintenance.

Compatibility

• Works with any turbine powered by steam, gas, or water.
• Integrates easily via Modbus communications.
• Supports MPU detection and acceleration detection inputs.
• Fits into existing turbine control systems.
• Compatible with Modicon Quantum systems for extended integration.

Certifications

• Overvoltage protection II per IEC 60664-1
• IEC 721-3-3 1994 international standards
• Suitable for class 3C2 environments
• Sulfur contamination resistant coating

Package List

• 1 x ProTech-GII 8237-1600 main unit
• Panel mount backplane structure
• User manual (digital copy available)
• No extra cables included – use standard industrial wiring

Warranty & Shipping

• 12 months warranty from date of shipment.
• Covers manufacturing defects only.
• Shipping carriers: FedEx, UPS, DHL.
• Tracking number provided within 24 hours.

Typical Applications

• Steam turbine overspeed protection
• Gas turbine speed control and shutdown
• Hydro turbine over-acceleration safety
• Any critical rotating machinery requiring high reliability voting logic

Diagnostic Capabilities

• Real-time speed readout (4 to 20 mA)
• Acceleration detection for early warning
• MPU detection for sensor health check
• Internal generator for self-test without turbine trip
• Modbus provides remote diagnostic data

FAQ – Frequently Asked Questions

• Can this device work with a small gas turbine?
  Yes. It works with any size turbine powered by steam, gas, or water.
• What happens if one module fails?
  The other two modules continue operation. You can replace the failed module online.
• Does this need special programming tools?
  No. Use the front keypad and display for configuration. Modbus is optional for remote setup.
• How do I perform a speed test without tripping the turbine?
  Use the internal generator. It simulates overspeed conditions safely.
• Is this suitable for outdoor installations?
  Yes. IP56 rating provides dust and water resistance when installed properly.

Experience-Based Buying Guide

• Choose 8237-1600 if you need voted relays for high safety integrity.
• Select this model when online maintenance is critical.
• Use it for environments with sulfur or humidity (class 3C2).
• Avoid this if your system requires only single-module non-redundant protection – then choose a basic model.
• For new turbine projects, this panel mount saves rack space.
• If you already use Modicon Quantum, integration is very smooth via Modbus.

Contact & Inquiries

• Need help selecting the right overspeed protection?
• Call us: +86 158 8020 0923 (WhatsApp)
• Email and online chat also available on request.

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