Woodward

Woodward 8237-1247 ProTech-GII Over-Speed Detection System

SKU 8237-1247

Disponibile
  • 12-month warranty
  • Free returns within 30 days
  • Manufacturer: Woodward
  • Product No.: 8237-1247
  • Origin United States
  • Product Type: Turbine Protection Systems
  • Payment: T/T, Western Union
  • Weight: 12.5 kg
  • Dimensions: 153 mm x 330 mm x 486 mm (H x W x D)
  • Shipping port: Xiamen
  • Warranty: 12 months

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Product Description

Description

The Woodward 8237-1247 is a triple modular over-speed detection system designed to monitor turbine rotor speed and acceleration for industrial turbines. Operating via active or passive magnetic pickups (MPUs), the unit issues a precise shutdown command to the turbine trip valve or corresponding trip system. The 8237-1247 features a bulkhead mount enclosure with IP56 dust and water resistance, integrating 4 to 20 mA speed readouts and Modbus communications. It utilizes two redundant trip relays and supports high-voltage power inputs to ensure reliable safety instrumented protection across hydro, steam, and gas turbine applications.

Features

  • Triple modular design enabling online replacement of individual modules during operation
  • Active or passive MPU detection for rotor speed and acceleration monitoring
  • Two redundant trip relays for reliable emergency shutdown execution
  • 4 to 20 mA speed readouts and Modbus communication support
  • Resistance to sulfur contamination, H2S, and CO2 gases
  • Built-in routine testing functionality using an internal frequency generator

Applications

  • Hydro turbines
  • Steam turbines
  • Gas turbines
  • Turbine over-speed and over-acceleration protection systems

Technical Specifications

Parameter Specification
Manufacturer Woodward
Model 8237-1247
Series ProTech-GII
Dimensions 330 mm x 486 mm x 153 mm
Enclosure Type IP56 dust and water resistant
Current Limit 500 mA
High Input Voltage 100 to 150 Vdc at 30 W per module
Interrupt Time 3 ms when on 1 power supply
Keypad / Display 45 Keys Total
Low Input Voltage Nominal 24 Vdc
Operating Temperature -20 to +60 degC (-4 to +140 degF)
Storage Temperature -20 to +65 degC (-4 to +158 degF)
Communication Ports RS-232 Com Port (3)
Weight 26 lbs 12 oz

Installation Guidelines

  • Mount the bulkhead unit securely in a standard industrial cabinet door environment.
  • Wire active or passive MPUs to the designated signal inputs for accurate turbine speed and acceleration monitoring.
  • Connect high-voltage (100 to 150 Vdc) or low-voltage (nominal 24 Vdc) power supplies according to the module rating specifications.
  • Verify redundant trip relay connections to the turbine trip valve prior to system commissioning.

Compliance and Certifications

  • IEC 721-3-3 1994 classification
Shipping & Returns

Global Express Shipping

  • Standard Delivery: 4–6 business days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our technical warranty.
FAQ
What is the primary function of the device?
The device monitors turbine rotor speed and acceleration using MPUs and issues shutdown commands to the turbine trip system.
What communication interfaces are available on the module?
The unit features three RS-232 communication ports and supports Modbus communications.
What power supply voltage ranges are supported by the module?
The module supports a high input voltage range of 100 to 150 Vdc and a low input voltage with a nominal rating of 24 Vdc.
What is the operating temperature range for the device?
The recommended operating temperature range is from -20 to +60 degC.
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8237-1247

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Woodward 8237-1247 ProTech-GII Over-Speed Detection System

Only 2 item(s) left in stock
  • Manufacturer: Woodward

  • Product No.: 8237-1247

  • Country of origin:United States

  • Product Type: Turbine Protection Systems

  • Payment: T/T, Western Union

  • Weight: 12500g

  • Dimensions: 153 mm x 330 mm x 486 mm (H x W x D)

  • Shipping port: Xiamen

  • Warranty: 12 months

Quantità
Visualizza dettagli completi

Product Description

Description

The Woodward 8237-1247 is a triple modular over-speed detection system designed to monitor turbine rotor speed and acceleration for industrial turbines. Operating via active or passive magnetic pickups (MPUs), the unit issues a precise shutdown command to the turbine trip valve or corresponding trip system. The 8237-1247 features a bulkhead mount enclosure with IP56 dust and water resistance, integrating 4 to 20 mA speed readouts and Modbus communications. It utilizes two redundant trip relays and supports high-voltage power inputs to ensure reliable safety instrumented protection across hydro, steam, and gas turbine applications.

Features

  • Triple modular design enabling online replacement of individual modules during operation
  • Active or passive MPU detection for rotor speed and acceleration monitoring
  • Two redundant trip relays for reliable emergency shutdown execution
  • 4 to 20 mA speed readouts and Modbus communication support
  • Resistance to sulfur contamination, H2S, and CO2 gases
  • Built-in routine testing functionality using an internal frequency generator

Applications

  • Hydro turbines
  • Steam turbines
  • Gas turbines
  • Turbine over-speed and over-acceleration protection systems

Technical Specifications

Parameter Specification
Manufacturer Woodward
Model 8237-1247
Series ProTech-GII
Dimensions 330 mm x 486 mm x 153 mm
Enclosure Type IP56 dust and water resistant
Current Limit 500 mA
High Input Voltage 100 to 150 Vdc at 30 W per module
Interrupt Time 3 ms when on 1 power supply
Keypad / Display 45 Keys Total
Low Input Voltage Nominal 24 Vdc
Operating Temperature -20 to +60 degC (-4 to +140 degF)
Storage Temperature -20 to +65 degC (-4 to +158 degF)
Communication Ports RS-232 Com Port (3)
Weight 26 lbs 12 oz

Installation Guidelines

  • Mount the bulkhead unit securely in a standard industrial cabinet door environment.
  • Wire active or passive MPUs to the designated signal inputs for accurate turbine speed and acceleration monitoring.
  • Connect high-voltage (100 to 150 Vdc) or low-voltage (nominal 24 Vdc) power supplies according to the module rating specifications.
  • Verify redundant trip relay connections to the turbine trip valve prior to system commissioning.

Compliance and Certifications

  • IEC 721-3-3 1994 classification

What is the primary function of the device?

The device monitors turbine rotor speed and acceleration using MPUs and issues shutdown commands to the turbine trip system.

What communication interfaces are available on the module?

The unit features three RS-232 communication ports and supports Modbus communications.

What power supply voltage ranges are supported by the module?

The module supports a high input voltage range of 100 to 150 Vdc and a low input voltage with a nominal rating of 24 Vdc.

What is the operating temperature range for the device?

The recommended operating temperature range is from -20 to +60 degC.

Global Express Shipping

  • Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).


For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Country of origin
United States

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