Installation & User Guide QualConnex On-Line Transformer Monitor Installation & User Guide DGALT1-11120, DGA-LT1 GTW-RF-3311, QGateway, USA GTW-RF-3311-CA, QGateway, Canada Version: 2.0: July 2022 www.qualitrolcorp.
Legal Information in this document is subject to change without notice. This document is provided to purchasers or users of Qualitrol products for use in the installation, operation, and servicing of such products. No other use, nor any reproduction, distribution, or the making of any derivatives of this document is authorized, without the express prior written permission of Qualitrol Corporation.
Contents Table of Contents Product Overview .......................................................................................... 3 DGA-LT1 .................................................................................................................... 3 QGateway .................................................................................................................. 4 QualConnex® Web Application ............................................................................... 4 Symbols ..
Contents Assembling the QGateway Antenna and Mount .................................................. 14 Determining the Magnetic Base Mount Angle and Configuration .................................................. 14 Assembling the Magnetic Mount .................................................................................................... 17 Connecting QGateway to Magnetic Base ......................................................................................
Installation & User Guide Product Overview DGA-LT1 QGateway QualConnex RF The QualConnex platform consists of 3 main parts. The DGA-LT1, QGateway, and QualConnex web portal. DGA-LT1 The DGA-LT1 is a transformer oil sensor array reporting oil hydrogen ppm, moisture, and temperature. The DGA-LT1 sensor is directly mounted to an existing valve on the transformer and provides a continuous reading of the transformer oil.
Installation & User Guide QGateway The QGateway receives and transmits data wirelessly from the DGA-LT1 sensors to a central monitoring platform. The QGateway is battery powered with solar battery charging. The QGateway receives and transmits encrypted raw signals via RF frequency to and from the DGA-LT1 sensors. That data is then transmitted via cellular transmission through TCP/IP to the remote monitoring system. This data is viewed via Qualitrol’s QualConnex® web portal.
Installation & User Guide Product Specifications Environmental Specifications The DGA-LT1 and QGateway units are designed to operate within the following environmental conditions: CHARACTERISTIC Altitude Maximum Humidity Range Ambient Temperature Range VALUE 8,000 ft.
Installation & User Guide CHARACTERISTIC Solar charging temp range Expected Availability Ambient Temperature Range RF Range Communications Certifications Enclosure Rating VALUE -4°C < t < 130°C (-20°C < t < 55°C) >90% below 55° latitude -40°F to +150°F (-40oC to 65oC) 600m (~2000 ft) at ≥ 1.5m (~5ft) mounting height 1,500m (~5000ft) at > 10m (30ft) mounting height IC RSS-210 Issue 8 / FCC Part 15.
Installation & User Guide DGA-LT1 site items to be confirmed: • Adequate location with proper clearance for mounting the DGA-LT1 monitor has been identified o The system is optimized for transformers that are oil-filled. o The recommended installation point for the DGA-LT1 is the transformer oil drain valve o Qualitrol requires a 1” NPT for the transformer oil supply valve. A DGA-LT1 configured with a 2” to 1” reducing adapter is available to order o A 5” (12.
Installation & User Guide Transformer Elevation Evaluation Large terrain variations can also lead to reduced signal strength due to earth obstructions. The elevation of each transformer should be noted with any variations of hills or other land masses between the transformers noted. This can again be accomplished with a web-based tool like https://en-us.topographic-map.com/, which provides free topographical maps, or site surveying or site maps as available.
Installation & User Guide Accounting for Elevation Changes It is always preferred to have the QGateway located at the highest elevation possible to ensure maximum communication range. Avoid locating the QGateway in low lying areas where hills will obstruct wireless communications to the surrounding transformers. Accounting for this may increase the number of QGateways needed depending on location availability.
Installation & User Guide Transformer Details to Prepare for Installation Qualitrol recommends collecting the following information during site preparation to enable configuration of the QualConnex website prior to installation. If this is not possible, the information can be collected during installation and set up in the field. The required section is the information required for the creation of a transformer in the QualConnex website (see QualConnex Website Guide for setup details).
Installation & User Guide Monitor Installation Note: Do not attempt to install your DGA-LT1 On-Line Transformer Monitor until you have read and fully understand the procedures outlined in this document.
Installation & User Guide Part Number DGALT1-11110 Description DGA LT1, Wireless Online Dissolved Gas Analyzer Measuring Hydrogen Concentration, Moisture Concentration and Oil Temperature, 1" Connection, RF Bleed Tube Tubing for bleeding air from DGA LT1 after installation GTW-RF-23310 Qualitrol QGateway, Wireless Sensor Transceiver for RF to Cellular Communication, Battery Powered with recharging through Solar Power (LoRa antenna shipped detached)
Installation & User Guide Part Number Description QGateway mount Qualitrol QGateway adjustable magnetic mount 2” Male to 1” Female NPT Reducing Bushing ADP-251-1 (Optional) Configuration in QualConnex Website With the DGA-LT1 and QGateway serial numbers confirmed with the shipping list and the transformer details collected during the site survey (see Transformer Details to Prepare for Installation list), the website should be configured prior to site installation.
Installation & User Guide Required Tools for Installation • 1 3/8” (33mm) fixed wrench or adjustable wrench of an adequate size for leverage (12-14 inch / 30 – 35 cm) • Extra high density Teflon tape (0.0032” or ~0.08 mm thick) • PTFE pipe-thread sealant • Bleed tube ¼” (6.5 mm) ID, oil resistant (Tygon) • Bleed container with ~1 inch (2 cm) of compatible transformer oil in the bottom. • Absorbent towels and containers to prevent oil spills during installation.
Installation & User Guide Table 1 - QGateway Mount Configuration Installation Surface Installation Angle (from horizon) Horizontal 30° Horizontal 45° Horizontal 60° Picture Mounting Hardware Configuration
Installation & User Guide Installation Surface Installation Angle (from horizon) Vertical 30° Vertical 45° Vertical 60° Picture Mounting Hardware Configuration
Installation & User Guide Assembling the Magnetic Mount The magnetic mount is shipped as shown in Figure 2 below. 1. First open the adjustable magnetic base and attach (2) support struts using (2) flange head screws as shown in Figure 3. 2. Do not fully tighten the screws. Figure 2: Magnetic mount components shipped. From left to right: (1) adjustable magnetic base, (2) support struts, (6) flange head screws Figure 3: Attaching the support struts 3.
Installation & User Guide Figure 4: Support strut orientation 4. Adjust the angle of the adjustable base and align the threaded end of the support strut with the desired mounting hole per the configuration chosen as shown in Table 1. 5. Secure both support struts using (2) flange head screws as shown in Figure 5. 6. Once the supports are in the desired position, tighten all (6) flange head screws to secure the adjustable magnet mount in position.
Installation & User Guide Connecting QGateway to Magnetic Base After the base has been configured to the correct installation angle, the QGateway must be attached to the base. 1. Place the QGateway on its mounting surface on the adjustable magnet mount with the front of the QGateway facing the hinge of the adjustable magnet mount (See Figure 6 & Figure 7). Figure 6: QGateway mounting surface Figure 7: Front of QGateway facing the same direction as the adjustable mount hinge 2.
Installation & User Guide Figure 8: Align holes on QGateway tabs with threaded holes on the adjustable magnet mount Figure 9: Secure QGateway to the adjustable magnet mount with (2) flange head screws Attaching LoRa Antenna to QGateway The QGateway is shipped without the LoRa antenna connected to help protect the antenna during shipment. The antenna must be attached and configured during site installation.
Installation & User Guide Figure 10: LoRa antenna and SMA connector Figure 11: Screw on LoRa antenna using knurled thumb screw
Installation & User Guide Figure 12: LoRa antenna vertically oriented to the ground Installing the QGateway The QGateway positions should be determined during the site prep portion. A powered on and functioning QGateway is required to enable the DGA-LT1 sample confirmation during commissioning. The position of the QGateway to the DGA-LT1 will also indicate the success of the communication link or that adjustments are needed.
Installation & User Guide QGateway Positioning The QGateway relies on solar panels to charge the onboard batteries. To ensure adequate power, during installation, the QGateway must be oriented to maximize solar collection. 1) Using a physical compass or cell phone compass app, identify south (for installations north of the equator) 2) Install the QGateway on the magnetic surface: a. Securely grab the QGateway with (2) hands on the sides. b.
Installation & User Guide Figure 14: Securely holding QGateway Figure 15: Rolling the magnet mount onto the magnetic surface
Installation & User Guide Figure 16: Rolling the magnet mount onto the magnetic surface (cont.) Power on and Confirm QGateway Cell Signal After placing the QGateway in the correct install position, follow the steps to ensure the QGateway is powered on and has cellular signal.
Installation & User Guide Notes for troubleshooting: If the green LED does not light up, first ensure that the power button is depressed. If the button is depressed, try cycling power by pressing the power button (to turn the power off) and pressing the button again (turning the system back on).
Installation & User Guide 4. Verify DGA-LT1 housing is free from external cracks 5. Note the DGA-LT1 serial number 6. Have all tools and bleed tube and container for oil collection ready DGA-LT1 Installation steps 1. Check to make sure drain valve is closed. Failure to close the drain valve could drain a significant amount of the transformer oil and cause personal or environmental harm. 2. Remove the existing plug from the transformer drain valve and the plastic shipping cap from the LT1. Save both. 3.
Installation & User Guide Bleeding the DGA-LT1 Monitor Warning! To prevent atmospheric air from entering the transformer, there must be positive oil pressure to install and bleed the DGA-LT1 monitor. Check the headspace pressure gauge to make sure that it is zero or positive. 1. Place an absorbent pad below the monitor to collect oil drips during bleeding. 2. Unscrew and remove bleed valve cap (blue box in Figure 20) Figure 20: DGA-LT1 Bleed Cap 3. Install ¼" (6.
Installation & User Guide Figure 21: DGA-LT1 Ready to Bleed Air from Unit 5. Slowly open the transformer drain valve. 6. Open the bleed valve by turning the top stainless-steel knob counterclockwise. 7. Allow all air to bleed from the system. Watch the tube to confirm oil flow. Keep the bleed fixture open until oil is flowing with no air bubbles present. 8. Close the bleed fixture valve by turning clockwise by hand until it is firmly closed. 9.
Installation & User Guide 2. 3. 4. 5. 6. 7. 8. 9. c. Absorbent towels. d. Drain valve plug and LT1 shipping cap. e. Extra high density Teflon tape, 0.0032” or ~0.08 mm and sealant. f. Thread cleaning brush. Close transformer oil drain valve. Place catch tray beneath drain valve/LT1 connection. Remove bleed valve cap, place oil container under bleed valve sample port, and open the needle valve to relieve the internal pressure of the LT1. a. If oil pressure is above 10 psig (1.
Installation & User Guide Le présent émetteur radio [IC: 24985-GW200] a été approuvé par Innovation, Sciences et Développement économique Canada pour fonctionner avec les types d'antenne énumérés cidessous et ayant un gain admissible maximal. Les types d'antenne non inclus dans cette liste, et dont le gain est supérieur au gain maximal indiqué pour tout type figurant sur la liste, sont strictement interdits pour l'exploitation de l'émetteur.
