GE Kelman Minitrans Installation Manual
  1. Manuals
  2. Brands
  3. GE Manuals
  4. Transformer
  5. Kelman Minitrans
  6. Installation manual

GE Kelman Minitrans Installation Manual

Transformer oil dissolved gas and moisture monitor
Hide thumbs Also See for Kelman Minitrans:
Table of Contents

Advertisement

Quick Links

Download this manual
GE
Grid Solutions
Kelman™ Minitrans
Installation Manual
Transformer Oil
Dissolved Gas and Moisture Monitor
GEDE-GA_M-DLIS-TE.MA-005
Rev 4.5
13-Aug-20

Advertisement

Table of Contents
loading

Related Manuals for GE Kelman Minitrans

Summary of Contents for GE Kelman Minitrans

  • Page 1 Grid Solutions Kelman™ Minitrans Installation Manual Transformer Oil Dissolved Gas and Moisture Monitor GEDE-GA_M-DLIS-TE.MA-005 Rev 4.5 13-Aug-20...

  • Page 2: Table Of Contents

    Contents Page 1 Introduction ......................7 Product Overview ..............................7 Scope ..................................7 2 Safety ........................8 Symbols ..................................8 Safety Statements ............................... 8 3 Requirements ....................10 Pre-installation ..............................10 Handling & Storage ............................10 4 Technical Specification ..................11 5 Compliance .......................13 6 Transformer Criteria ..................14 7 Mounting ......................15 PGA Transit Lock ..............................16...
  • Page 3 Appendix E Product Dimensions ..............43 Appendix F Mounting Stand Dimensions .............44 Appendix G Footprint Dimensions ..............45 Appendix H Sun Canopy Dimensions .............46 Appendix I Input Board ..................48 Appendix J Heat Trace Cable ................51 Appendix K Direct Mount Cradle Vibration Levels ........52 Appendix L Direct Mount Cradle Installation ..........54 Appendix M Transit Locks .................65 Contact &...
  • Page 4 List of Tables and Figures Page Table 4-1: Technical specification ............................11 Table 5-1: Type tests .................................. 13 Figure 7-1: PGA lock – engaged (one bracket) ....................... 16 Figure 7-2: PGA lock – disengaged (two brackets) ...................... 16 Figure 7-3: The product mounted on a stand ......................... 17 Figure 7-4: Direct mount cradle ............................
  • Page 5 Figure L-12: Bottom isolators tools and fittings ......................60 Figure L-13: The product positioned over the isolators .................... 60 Figure L-14: Isolator with O ring ............................61 Figure L-15: Attach fittings to isolators..........................62 Table L-5: Failsafe tools and fittings ........................... 62 Figure L-16: Failsafe tools and fittings ..........................
  • Page 6 Figure M-44: Surplus nuts & washers stored securely on bracket bolts ............85 Related Documents Ref# Title MA-005 Minitrans Operator Guide Abbreviations & Definitions Abbreviation Meaning Polychlorinated biphenyl Personal Protective Equipment MA-005 – Minitrans Installation Manual – Rev 4.5 13-Aug-20 Page 6 of 86...

  • Page 7: Introduction

    INTRODUCTION Product Overview The Minitrans™ (herein referred to as the product) is an on-line DGA (Dissolved Gas Analysis) system for transformer diagnostics. The product measures the following key fault gases in transformer oil: hydrogen, carbon monoxide and acetylene as well as moisture in the oil and the transformer load current.

  • Page 8: Safety

    SAFETY Symbols The meaning of symbols used on the Kelman™ Minitrans: Refer to the Installation Manual / Operator Guide to prevent death, injury, equipment damage or loss of data. Electrical Hazard. Risk of electric shock. Primary Protective Earth connection. Hot surfaces may be present. The meaning of symbols used in this manual: Warning: A procedure, practice, or condition could cause death or serious injury and/or significant equipment damage.
  • Page 9 IP55 thresholds depending on the location, pressure and direction of the water jets. Should customers require testing a water deluge system in the area in which the product is installed, GE recommends powering down the product and draping it with a suitable waterproof covering.

  • Page 10: Requirements

    In addition, the GE Customer Service Centre representative will need specific information in order to provide recommendations for a trouble-free installation. If GE is to perform the installation, the installation will not be scheduled until all pre-installation tasks outlined in this manual are complete (as performed by the customer and GE).

  • Page 11: Technical Specification

    10 metres or less from oil supply or return valve to product connection point, and on transformer oil supply valve volumes of 200 ml or less. For oil temperatures colder than −10 ºC, GE recommends the use of heat trace cabling on piping. Low oil viscosity reduces oil flow.
  • Page 12 Note: The weight depends on the order specification. The stated weight is for a base product without packaging and excludes options such as a mounting stand. Check the shipping document for the exact packaged weight. Note: Maximum DC breaking capacity for a resistive load. Note: Use only the approved and recommended fuse to ensure continued fire protection and compliance.

  • Page 13: Compliance

    COMPLIANCE The product is designed to meet the following type tests as listed in Table 5-1. Table 5-1: Type tests CATEGORY STANDARD CLASS/ TEST LEVEL EMC Emissions CISPR 11 / EN55011 Radiated & Conducted Emissions IEC 61000-3-2 Harmonic Current Emissions Limits IEC 61000-3-3 Limitation of voltage changes, voltage fluctuations and flicker in public low-...

  • Page 14: Transformer Criteria

    TRANSFORMER CRITERIA The transformer shall meet the following criteria: ▪ The transformer contains mineral type oils (paraffinic or naphthenic) that meet the requirements of IEC 60296, BS EN 60296, VDE 0370 or ASTM D 3487. ▪ The transformer oil must be certified PCB free. ▪...

  • Page 15: Mounting

    (see Section 7.2) or direct mounted to the body of a transformer using the GE direct mount cradle (see Section 7.3). When considering where and how to mount the product, observe the following points to...

  • Page 16: Pga Transit Lock

    Mounting Stand Installation It is important that the product be installed in a secure manner. For this reason, GE offers an optional mounting stand. If the GE-manufactured mounting stand has not been purchased, a stand must be constructed as outlined in Section 7.

  • Page 17: Mounting The Product To The Stand

    See Appendix F for a drawing of the stand with the product mounted. 7.2.1 Mounting the product to the stand The product must be installed on an appropriate mounting structure, such as the optional but recommended mounting stand as shown in Figure 7-3. The product weighs up to 30.5 kg (68 lb) so it is important to take precautions prior to lifting.

  • Page 18: Direct Mount Cradle

    See Appendix K for vibratory guidance on when the GE Direct Mount Cradle should be used. See Appendix L for the Direct Mount Cradle installation instructions.
  • Page 19 are available to order separately. The required type depends on the mounting arrangement: ▪ Mounting-stand canopy (24-0395 or a stainless-steel version 24-0522) ▪ Cradle-mount canopy (KITT00100 or a stainless-steel version KITT00101) Figure 7-5: Cradle-mount sun canopy See Appendix H for drawings and dimensions. MA-005 - Minitrans Installation Manual - Rev 4.5 13-Aug-20 Page 19 of 86...

  • Page 20: Plumbing

    PLUMBING The product removes oil from the transformer, extracts the gases, analyses the gases and then returns the oil to the transformer. The locations from which the oil is removed and to which it is returned are important for the accurate analysis of the gases (see Figure 8-1 and Figure 8-2).

  • Page 21: Transformer Valves

    Transformer Valves Figure 8-3 shows the location of the following valves: Figure 8-3: Possible valve locations of a transformer 8.1.1 Fill valve If the transformer is nitrogen blanketed, the fill valve or any other valve at the top of the transformer should not be used as an oil supply valve because there is no guarantee that there will always be oil at this position.

  • Page 22: Cooling Loop Valves

    8.1.4 Cooling loop valves The product should only be supplied with oil from a cooling loop valve if there are no other valves available. Note: If oil must be taken from an oil-forced cooling loop, the oil supply valve must be located on the high-pressure side of the oil pump. Do not return oil to the cooling loop unless the cooling is not directed flow and that there are no other alternative valves in which to connect the...

  • Page 23: Oil Return

    (see Figure 8-9). Note: An optional manual oil sampling arrangement can be fitted to the oil inlet on the base of the product. For more information, contact the GE Customer Service Centre. Tubing Stainless steel tubing is used to connect the product to the transformer. The amount of tubing required is based on the location of the product in relation to the valves on the transformer.

  • Page 24: Fitting Requirements

    ▪ When measuring the routes chosen for the tubing between the product and the transformer oil supply and return valves – corners, bends and other obstacles may add to the overall length and must therefore be taken in to consideration. ▪...

  • Page 25: Fitting Instructions

    Blank cable grommet Ambient temperature sensor Power-in gland Condensation plug M8 earth connection point Oil out Cable grommets Oil in Figure 8-4: Product connections - bottom view 8.3.2 Fitting instructions Insert one end of the tubing into the Swagelok or Ham-Let fitting body as shown in Figure 8-5.

  • Page 26: Connection To Oil Supply Valve

    Do not open the valves on the transformer or the stainless steel tubing. This is performed by GE-trained and certified personnel during the commissioning phase to prevent air bubbles from entering the transformer. 8.3.3 Connection to oil supply valve Oil is typically taken from a valve midway up on the transformer or from an active cooling loop (see Section 8 for information on valve selection).
  • Page 27 Bleed Port (must be oriented upwards) Check Valve Figure 8-8: Bleed assembly on flange-type oil return valve ▪ If a flange-type valve is to be used to return the oil and the flange is drilled and tapped to a ¼ in. female NPT fitting, then the drilled hole should be offset to the top of the internal valve diameter to prevent an air pocket from being trapped behind the flange (see Figure 8-9).
  • Page 28 Both of these items are included in the product installation kit. Note: GE recommends two wraps of PTFE tape or three wraps for large pipe fittings. Figure 8-11 depicts the proper arrangement of the Return Assembly.

  • Page 29: Power

    POWER This section outlines the power requirements, electrical connections and related aspects that must be observed. The power source must be rated 90 V AC to 264 V AC, 47 Hz to 63 Hz. A 10 A to 15 A circuit meeting these requirements must be available at the time of installation.
  • Page 30 Cable Power-in (gland) grommet (blank) M8 earth connection Cable grommets Ambient temperature sensor Condensation plug Figure 9-1: Bottom plate connections The mains fuse holders with modular fuses for the product are shown in Figure 9-2. Figure 9-3 shows the location of the power supply terminals for the mains supply. Earth Neutral Live...

  • Page 31: Battery

    Figure 9-5: Coin cell battery The following steps describe how to change the battery: Back up the product data – contact your GE representative. Open the inner door to locate the battery on the system board (see Figure 9-5). Slide the battery out of its housing.
  • Page 32 Close the inner door. There is a danger of a new battery exploding if installed incorrectly. Dispose of the used battery in accordance with local regulations — not in a fire or with household waste. Contact your local waste disposal agency for the address of the nearest battery deposit site.

  • Page 33: Electronics

    ELECTRONICS 10.1 Input Board The product has an input board and a marshalling board for connections. The input board is located on the internal bottom tier of the product and has screw terminals to provide connections to the alarms, PSTN, serial communications and transformer load sensor (see Appendix I).

  • Page 34: External Sensors

    Figure 10-1: Accessory power points for 12 V and 24 V 10.4 External Sensors A transformer load sensor is provided in the product installation kit to measure and record the transformer load. The transformer load sensor is a split core current sensor that can be installed unobtrusively around a CT line receiving a feed from the main bushing secondary wiring (usually located within the marshalling / control cabinet of the transformer).

  • Page 35: Communications

    Channel A is disabled when DNP3 over Ethernet is selected. The options listed above are available at the time of printing – other options may become available. (Contact the GE Customer Service Centre for further information.) MA-005 - Minitrans Installation Manual - Rev 4.5...

  • Page 36: Appendix A Installation Tools And Supplies

    The following tools and supplies are needed on site to secure the mounting stand (if used), tighten the 2 in. pipe fittings (if used) and complete the installation. GE is unable to bring the following items due to size and weight restrictions, so the customer should provide them.

  • Page 37: Appendix B Customer Checklist

    Appendix B Customer Checklist The following checklist details items that the customer must acquire prior to the installation:  Prepared, flat mounting surface (unless direct mounted using the cradle)—see Section 7).  Parts needed to fabricate a mounting stand (if the product mounting stand or cradle has not been purchased)—see Section 7.

  • Page 38: Appendix C Installation Record

    Appendix C Installation Record Customer Contact and Site Details Company: Address: City, State and Postcode (Zip): Country: Phone: Installation Site Name: Site Address: City, State: Postcode (Zip): Country: Primary Corporate Contact: Name: Title: Address: City, State and Postcode (Zip): Country: Phone: Mobile: Email address:...
  • Page 39 Transformer Details Make: Year: Years in Service: Type: Conservator  Nitrogen Blanketed  Other: MVA Rating: CT ratio: Condition of Desiccant: Attach several photos showing the transformer and surrounding area  Attach all available DGA data  Total Dissolved Gas: ___________ ppm (sum of all measured gases) Please describe (or attach separately) details of any major maintenance actions, such as a rebuild, vacuum degassing or filtering etc.
  • Page 40  Alternative Supply valve location  Alternative Return valve location  Secondary Shut-Off valve location (if needed)  Oil supply & return routing (the ¼ in. stainless steel tubing) C.3.2 Proposed product location:  Overview from front  Overview from left side ...

  • Page 41: Appendix D Tubing Specification And Ordering Details

    Swagelok representative). Do not use copper tubing (See Section D.6). Tubing Unions Tubing Unions connect two pieces of the above ¼ in. tubing together. GE recommend: ▪ Swagelok: SS-400-6 Stainless Union, ¼ in. OD ▪ Ham-Let: 762L SS 1/4 Stainless Union, ¼ in. OD Shut-Off Valve If the oil supply or return valve is located more than 6 ft (1.82 m) above the base of the...
  • Page 42 Stainless steel is the only material that should be used. The use of any other tubing material will cause reliability issues or inaccurate results and void the warranty of the product. GE does not support the use of copper tubing for the installation of its transformer analysis products. The reasons for this are outlined below.

  • Page 43: Appendix E Product Dimensions

    Appendix E Product Dimensions Figure E-1 and Figure E-2 show the dimensions of the product. All dimensions are in millimetres (mm). Tolerance is ±5 mm. The total weight of the product is 30.5 kg (68 lb). 1 metre clearance Figure E-1: Front and side dimensions Figure E-2: Base dimensions MA-005 - Minitrans Installation Manual - Rev 4.5 13-Aug-20...

  • Page 44: Appendix F Mounting Stand Dimensions

    Appendix F Mounting Stand Dimensions Figure F-1 shows the product mounting stand dimensions. The mounting stand weighs 20 kg (45 lb). All dimensions are in millimetres (mm). Tolerance is ±5 mm. Figure F-1 Front and side dimensions with stand MA-005 - Minitrans Installation Manual - Rev 4.5 13-Aug-20 Page 44 of 86...

  • Page 45: Appendix G Footprint Dimensions

    Appendix G Footprint Dimensions Figure G-1 shows the product footprint dimensions. All dimensions are in millimetres (mm). Tolerance is ±5 mm. Figure G-1: Footprint dimensions MA-005 - Minitrans Installation Manual - Rev 4.5 13-Aug-20 Page 45 of 86...

  • Page 46: Appendix H Sun Canopy Dimensions

    Appendix H Sun Canopy Dimensions Figure H-1 to Figure H-4 show the two canopies and dimensions with the product mounted. All dimensions are in millimetres (mm). Tolerance is ±1 mm. Figure H-1: Mounting-stand canopy front dimensions Figure H-2: Mounting-stand canopy side dimensions MA-005 - Minitrans Installation Manual - Rev 4.5 13-Aug-20 Page 46 of 86...
  • Page 47 Figure H-3: Cradle-mount canopy front dimensions Figure H-4: Cradle-mount canopy side dimensions MA-005 - Minitrans Installation Manual - Rev 4.5 13-Aug-20 Page 47 of 86...

  • Page 48: Appendix I Input Board

    Appendix I Input Board Figure I-1 shows the product input board labelled with each terminal and corresponding signal. Figure I-1: Input board MA-005 - Minitrans Installation Manual - Rev 4.5 13-Aug-20 Page 48 of 86...
  • Page 49 Table I-1 provides a description of each terminal. Table I-1: List of terminals Terminal Signal Description RX-/TXD Channel 2 Comms RX+/RXD SGND RX-/TXD Channel 1 Comms RX+/RXD SGND RING PSTN Interface Relay 1 (Service) Relay 2 (Alarm) INPUT A Load Sensor INPUT B +24V Accessory Power (0.5 A)
  • Page 50 Optional communications modules Figure I-2 illustrates the connections for the RS-232 and RS-485 connections, including DNP3. Figure I-2: RS-232 & RS-485 connections MA-005 - Minitrans Installation Manual - Rev 4.5 13-Aug-20 Page 50 of 86...

  • Page 51: Appendix J Heat Trace Cable

    −10 °C. The customer is responsible for supplying the heat trace cable, which must be installed by a qualified electrician. GE Service Personnel are available to advise the customer and work with the company’s electrician to install the heat trace cable.

  • Page 52: Appendix K Direct Mount Cradle Vibration Levels

    K.1.1 Purpose and scope The purpose of this appendix is to give guidance as to when the ‘GE Direct Mount Cradle’ should be used to directly mount the product to a transformer. This guidance is based on the study of the: ▪...
  • Page 53 Figure K-1: Product vibration limits MA-005 - Minitrans Installation Manual - Rev 4.5 13-Aug-20 Page 53 of 86...

  • Page 54: Appendix L Direct Mount Cradle Installation

    Direct Mount Cradle Installation Purpose and Scope The purpose of this appendix is to provide a detailed description of how to install the product onto a transformer using the ‘GE Direct mount cradle’ (Figure L-1) in the following scenarios: ▪...
  • Page 55 studs are larger than M6 x 40 mm, then the studs must be removed and replaced with the supplied A2 stainless steel M6 bolts torqued to 12 Nm. ▪ [In a retrofit scenario only.] Clearance is required at each side of the product in its original position.
  • Page 56 Standard Kit The standard GE Direct Mount Cradle kit is listed in Table L-1. Table L-1: MINI DM-Cradle retrofit kit - KITT00071 Item No. Description 21-1318 Minitrans - Direct mount support bracket 21-1317 Minitrans - Direct mount right frame 21-1316...
  • Page 57 Figure L-4: Product positioned on the foam skid L.5.2 Attach the right and left brackets to the product The following tools and fittings as listed in Table L-2 and as shown in Figure L-5 are required in order to attach the brackets to the product. Table L-2: Bracket tools and fittings Item No.
  • Page 58 ▪ Attach the right bracket and assemble the fittings as shown in Figure L-6. Large flat M6 flat M6 nut washer washer M6 flat M6 spring washer washer M6 x 20 bolt, M6 flat M6 nut, M6 spring, M6 flat & washer M8 flat washers Figure L-6: Attach bracket fittings to the product...
  • Page 59 Note: GE recommends the use of grade A2 stainless steel bolts (supplied as part of the installation kit - KAN01056) to connect the support bracket to the transformer. ▪ Place the support bracket (21-1318) at the mounting position on the transformer and bolt in position with the fittings as shown in Figure L-9 (recommended torque is 12 Nm).
  • Page 60 L.5.4 Suspend the product on the support bracket and attach the bottom isolators The following tools and fittings as listed in Table L-4 and as shown in Figure L-12 are required in order to suspend the product to the support bracket and attach the bottom isolators.
  • Page 61 On the remaining two isolators, place an O ring (MECH00249) over the thread of each isolator (one O ring per isolator) as shown in Figure L-14. Position the isolators between the bottom lugs of the support bracket and the bottom holes on the right and left brackets.
  • Page 62 Large flat washers M6 nut, spring and flat washers M6 nut, spring and flat washers Figure L-15: Attach fittings to isolators L.5.5 Fit the failsafe mechanism The following tools and fittings as listed in Table L-5 and as shown in Figure L-16 are required in order to fit the failsafe mechanism to the support bracket.
  • Page 63 M6 nut, washer and spring washer Figure L-17 Fitting the failsafe mechanism L.5.6 Connect the flexible braided tubing to the inlet and outlet ports of the product. ▪ Two 1 metre lengths of flexible braided tubing are supplied in each installation kit. These need to be connected to the inlet and outlet ports of the product to –...
  • Page 64 Checks and Measurements ▪ Isolator Alignment: Inspect all six isolators to ensure proper alignment. If required, unscrew the nuts and adjust the isolators so that the opposing threaded portions of each isolator are aligned. ▪ Measure skew distance: Report any skew which is greater than 4 mm (measured from bolt centre to bolt centre) as shown in Figure L-18.

  • Page 65: Appendix M Transit Locks

    Appendix M Transit Locks Introduction M.1.1 Purpose and scope This appendix details how to remove and attach the following Minitrans transit locks: ▪ interior PGA lock (the product ships with this engaged) ▪ exterior cradle lock (only required where the product is directly mounted to the body of a transformer using the direct mount cradle) M.1.2 Transit considerations...
  • Page 66 M.1.4 Safety considerations It is important to follow the procedures defined in this document to maintain the warranty and avoid: ▪ A safety risk during installation, operation and transit. ▪ Impaired functionality, since increased noise to the sensor would invalidate the readings as noise test results are logged for every measurement.
  • Page 67 M.2.2 Remove the PGA lock Open the door of the product. Use a flathead screwdriver to remove the five screws holding the black inner panel and carefully pull outwards as shown in Figure M-5. Note: The inner panel has several cables attached that must first be disconnected. Loosen screws and remove panel Figure M-5 Remove the inner panel MA-005 - Minitrans Installation Manual - Rev 4.5...
  • Page 68 ▪ Disconnect the display cable shown in Figure M-6 from the display board. Disconnect this cable from the display board Figure M-6: Disconnect the display cable ▪ Disconnect the USB cable shown in Figure M-7 from the rear of the USB port connector on the door.
  • Page 69 ▪ Locate the PGA locks as shown in Figure M-9 and use a 4 mm Allen key to unscrew the M5 × 30 screws that hold the PGA locks in place. Figure M-9: PGA lock (one of two) with screws loosened ▪...
  • Page 70 ▪ Reconnect the fan cable shown in Figure M-14 to the ‘Z3 fan’ connector on the marshalling board. Reconnect the fan cable at point Z3 Figure M-14: Reconnect the fan cable ▪ Reconnect the USB cable shown in Figure M-15 to the rear of the USB port connector. Reconnect this cable to the USB port Figure M-15: Reconnect the USB cable...
  • Page 71 ▪ Carefully replace the black inner panel with all cables attached and use a flathead screwdriver to secure in place with the previously removed screws as shown in Figure M-17. Replace panel and tighten screws Figure M-17: Replace the inner panel ▪...
  • Page 72 M.2.3 Attach the PGA lock Open the door of the product. Use a flathead screwdriver to remove the five screws holding the black inner panel and carefully pull outwards as shown in Figure M-18. Note: The inner panel has several cables attached that must first be disconnected. Loosen screws and remove panel Figure M-18: Remove the inner panel MA-005 - Minitrans Installation Manual - Rev 4.5...
  • Page 73 ▪ Disconnect the display cable shown in Figure M-19 from the display board. Disconnect this cable from the display Figure M-19: Disconnect the display cable ▪ Disconnect the USB cable shown in Figure M-20 from the rear of the USB port connector on the door.
  • Page 74 ▪ Take one of the PGA locks (21-0598) and attach it to the right-hand side of the PGA between the top and bottom PGA brackets as shown in Figure M-22. ▪ Use two M5 × 30 mm bolts and two rib lock washers to fasten the PGA lock and tighten with a 4 mm Allen key.
  • Page 75 ▪ Reconnect the USB cable shown in Figure M-24 to the rear of the USB port connector on the door. Reconnect this cable to the USB port Figure M-24: Reconnect the USB cable ▪ Reconnect the display cable to the display board as shown in Figure M-25. Reconnect this cable to the display board Figure M-25: Reconnect the display cable...
  • Page 76 ▪ Carefully replace the black inner panel with all cables attached and use a flathead screwdriver to secure in place with the previously removed screws as shown in Figure M-26. Replace panel and tighten screws Figure M-26: Replace the inner panel ▪...
  • Page 77 But can apply to any scenario where there is a requirement to move or relocate a transformer with a pre-installed Minitrans. If the transformer and monitoring product (mounted to the transformer using the GE Direct Mount Cradle) are to be transported together, then it is essential to fit both the cradle and PGA transit locks.
  • Page 78 M.3.2 Checks and measurements ▪ Isolator Alignment: Inspect all six isolators to ensure proper alignment. If required, unscrew the nuts and adjust the isolators so that the opposing threaded portions of each isolator are aligned. ▪ Measure skew distance: Report any skew which is greater than 4 mm (measured from bolt centre to bolt centre as shown in Figure M-28).
  • Page 79 M.3.3 Required tools The following tools and fittings as listed in Table M-2 and as shown in Figure M-30 are required in order to attach the brackets to the product. Table M-2: Cradle lock tools & fittings Item No. Description 10 mm nut spinner 5 mm Allen key 10 mm Spanner...
  • Page 80 ▪ Place the top locking piece (21-1341) over the isolator threads and into the cutout of the top arm as shown in Figure M-32. Locking Piece Top 21-1341 Figure M-32: Locking Piece Top ▪ Replace the fittings, failsafe configuration and fasten as shown in Figure M-33. M6 x 40 Bolt, (failsafe) M6 Nut, spring...
  • Page 81 M.3.4.2 Bottom isolators ▪ Partially unscrew the fittings from the front of the bottom two isolators. Pull the large flat washer forward to allow room to install the locks on the bottom isolators as shown in Figure M-34. [pull forward] Figure M-34: Bottom isolators with partially unscrewed fittings ▪...
  • Page 82 ▪ Attach the two bottom locks (21-1339) over the two bottom isolators by sliding them over the isolator threads as shown in Figure M-36. Note: Fitting the locks may require a little pressure to compress the isolators. This is achieved by pushing the bottom of the product towards the transformer. ▪...
  • Page 83 M.3.5 Remove the cradle lock The locks on the exterior isolators must be disengaged after transit, but before the product is powered on. M.3.5.1 Bottom isolators ▪ Loosen the nut at the front of the bottom isolator with a 10 mm nut spinner as shown in Figure M-37.
  • Page 84 M.3.5.2 Top isolators ▪ Unscrew both failsafe bolts and remove the failsafe configuration shown in Figure M-40 using a 5 mm Allen key or a 10 mm spanner. ▪ Then unscrew the M6 nut from the isolator and remove the fittings from all four top isolators as shown in Figure M-40 and Figure M-41.
  • Page 85 ▪ Remove the top locking pieces, then replace the failsafe configuration securely and invert the top locking pieces over the threads of the isolators as shown in Figure M-42. ▪ Use the front isolator threads to store the bottom locking pieces. ▪...

  • Page 86: Contact & Copyright Details

    Other company or product names mentioned in this document may be trademarks or registered trademarks of their respective companies. GE reserves the right to make changes to specifications of products described at any time without notice and without obligation to notify any person of such changes.

Table of Contents