Questions and Answers
What is the primary purpose of the technical document for the MSENSE® DGA 9?
Who is responsible for customer inquiries about the MSENSE® DGA 9?
Which company manufactures the MSENSE® DGA 9?
What should accompany the technical document to ensure completeness?
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What is reflected in a new edition of the technical file?
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What is the required thread depth for the threaded flange used in the installation of the MSENSE® DGA 9?
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What is the recommended method of connection for the MSENSE® DGA 9 to ensure no turning of the device during installation?
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What type of valve is suitable for the installation of the MSENSE® DGA 9?
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How much free space is required around the center of the connecting flange for the flange connection of the MSENSE® DGA 9?
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What should be specified when ordering the MSENSE® DGA 9?
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What should you do immediately after noticing no more air bubbles escaping from the sample hose?
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What should be used to seal the threaded joint during indirect mounting of the MSENSE® DGA 9?
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What is the correct procedure to clean the external thread of the connecting unit?
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Before installing the MSENSE® DGA 9, what should you ensure about the protective cap?
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How should the MSENSE® DGA 9 be positioned on the threaded joint during installation?
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What should be done before installing or removing the MSENSE® DGA 9?
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Which of the following practices is recommended when mounting the MSENSE® DGA 9?
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What can lead to the expiry of the warranty claim for the MSENSE® DGA 9?
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What type of tools should not be used for handling the MSENSE® DGA 9?
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What is required if the MSENSE® DGA 9 is to be installed over 1 m high?
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What does the filling level L1 indicate?
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Which component is monitored for the filling time?
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What occurs during the degassing process?
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Which error is detectable by the filling sensors?
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What happens if the filling level drops according to fault detection?
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The device is designed to detect very fast developing faults and protect itself from them.
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Using personal protective equipment is essential to minimize risks during installation and operation of the product.
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The intended use of the device includes operating it without adhering to the technical specifications provided.
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Wearing loose clothing and jewelry is recommended when working near rotating parts of the device.
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All necessary work on the device should be performed by untrained personnel to ensure effective operation.
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The MSENSE® DGA 9 is manufactured by Maschinenfabrik Reinhausen GmbH exclusively.
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Legal provisions regarding the MSENSE® DGA 9 are mentioned in the document.
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MTE Meter Test Equipment AG holds all copyright rights for the MSENSE® DGA 9 documentation.
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The installation and operating instructions for the MSENSE® DGA 9 may be modified without prior notice.
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The contact information provided includes physical addresses located in France and Spain.
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The connection terminals X403 are used for relay outputs 1... 4.
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Relay outputs 5 and 6 are connected through terminals X302.
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The RS485 interface is exclusively used for analogue outputs.
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Analogue outputs can range from 0 to 20 mA DC as stated in the terminal specifications.
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Relay outputs 7 through 10 are accessible via connection terminals X401.
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The MSENSE® DGA 9 can safely be installed on a knee pipe or pipe bend.
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It is permissible to clean the MSENSE® DGA 9 with a solvent.
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The protective cap should be used after dismantling the device to prevent damage.
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External cables can be laid above the heating units without concern.
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The MSENSE® DGA 9 must be removed before every gas release or filling of the transformer.
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The MSENSE® DGA 9 uses a 64-bit processor with a frequency of 240 MHz.
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The flash memory of the MSENSE® DGA 9 has a capacity of 128 Mbyte.
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Each alarm status change in the MSENSE® DGA 9 requires 20 bytes of storage space.
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When using additional sensors, the storage capacity of the MSENSE® DGA 9 is determined by the number of sensors and the chosen storage interval.
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The relative moisture of the oil is displayed continuously on the main screen of the MSENSE® DGA 9.
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Study Notes
Introduction
- Technical file provides guidance for the installation, connection, commissioning, and monitoring of MSENSE® DGA 9.
- Intended for specially trained and authorized personnel.
Contact Information
- Contact for inquiries: MR Service & Complaint at Maschinenfabrik Reinhausen GmbH, Regensburg, Germany.
- Email: [email protected], [email protected].
- Notable manufacturers: EMH Energie-Messtechnik GmbH (Germany) and MTE Meter Test Equipment AG (Switzerland).
Safety and Handling
- Open aeration screw before installation or removal to avoid accidents.
- Avoid mounting on galvanized connections to prevent erroneous readings.
- Do not use high-pressure cleaners for maintenance to avert damage.
- Recommended tools include an M55 open-ended spanner or a 1½" adjustable spanner.
- Incorrect handling, such as the use of solvents or improper tools, voids the warranty.
Installation Guidelines
- Visual inspections of the MSENSE® DGA 9 required prior to installation.
- Connection options include G 1½" ISO DIN 228-1 or 1½" NPT ANSI B 1.20.1.
- Device should be installed on a gate valve with full passage or a ball valve on the transformer.
- Ensure ample space (430 mm diameter) is available for direct flange connections.
Connection Types
- Flange Connection: Directly screws to the threaded flange; requires at least 25 mm thread depth.
- Threaded Joint: Uses a union nut and flat sealing for easier installation without twisting the device.
Voltage and Sample Hose Connection
- MSENSE® DGA 9 is available in 4 voltage configurations.
- Sample hose must be secured to eliminate air bubbles and oil residues must be cleaned with a dry cloth.
Indirect Mounting
- Involves fixing the device with a union nut on a threaded joint; requires a gasket as a seal.
- Protective cap should remain in place until installation.
Device Alignment
- Align the device with vent screw at the 12 o'clock position after installation.
- Ensure gasket is in place between the MSENSE® DGA 9 and the screw connection.
Monitoring and Safety Functions
- Monitored components include filling sensors and pressure sensors.
- Detects errors with filling levels, flow measurement, and operational timing.
Degasification Process
- Releases dissolved gases from oil through circulation into the air, achieving a balance in gas proportions between oil and air.
Contact Information
- For inquiries about the MSENSE® DGA 9, contact MR Service & Complaint at Maschinenfabrik Reinhausen GmbH in Regensburg, Germany.
- Additional manufacturer details: EMH Energie-Messtechnik GmbH (Germany) and MTE Meter Test Equipment AG (Switzerland).
- Emails for service and complaints: [email protected], [email protected].
Product Overview
- MSENSE® DGA 9 is designed for detecting gas-in-oil through microprocessor control.
- Utilizes a 32-bit “Cold-fire” processor operating at 240 MHz.
- Capable of storing measured data for approximately 10 years in a 128 Mbyte flash memory.
Safety Guidelines
- Not designed to detect fast-developing faults; requires additional safety devices for such protection.
- Installation must ensure compliance with operating conditions to minimize risks to personnel, property, and the environment.
- Personal protective equipment (PPE) is crucial; avoid damaged gear and loose clothing near moving parts.
- Avoid contact with hydrocarbon compounds and do not use solvents for cleaning; only dry cloth recommended.
- Ensure proper ventilation and avoid exposing the device to a vacuum.
Installation Requirements
- Position MSENSE® DGA 9 at least 100 cm below the oil filling level.
- Avoid installation near pipes or bends to prevent turbulence-related issues.
- Always switch off power supply before servicing and ensure the device is removed from the transformer valve before gas release or filling.
Connection Details
- Features multiple relay output terminals (X402, X403) for connecting to relay systems.
- Analogue outputs (X301, X302, X303) available for data monitoring, each supporting 0/4 - 20 mA DC.
- RS485 interface (X304) for digital communication intended for service purposes.
Memory and Data Management
- Memory calculations account for the number of sensors and storage intervals; additional sensors decrease memory availability.
- Each alarm status change consumes 12 bytes of memory, affecting overall storage capacity.
- Regular data reading using MR MSET DGA software is recommended to avoid data loss.
Main Screen Functionality
- Displays relative and absolute oil moisture alternately with a 3-second change interval, providing crucial real-time data for users.
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Description
This quiz covers the installation, connection, and commissioning of the MSENSE® DGA 9 device. It includes essential safety precautions, recommended tools, and handling instructions to ensure proper setup and maintenance. Designed for specially trained personnel, it emphasizes the importance of correct procedures to avoid warranty voiding issues.
