Huawei Smartkits V100R002C00 Manual

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Smartkits

V100R002C00

Guide to Transformer Low Voltage

Bushing Replacement (No

Handhole Replacement)

Issue

Date

2021-11-22

HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.

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Page 1 Smartkits V100R002C00 Guide to Transformer Low Voltage Bushing Replacement (No Handhole Replacement) Issue Date 2021-11-22 HUAWEI DIGITAL POWER TECHNOLOGIES CO., LTD.
Page 2 Notice The purchased products, services and features are stipulated by the contract made between Huawei Digital Power Technologies Co., Ltd. and the customer. All or part of the products, services and features described in this document may not be within the purchase scope or the usage scope. Unless otherwise specified in the contract, all statements, information, and recommendations in this document are provided "AS IS"...
Page 3: Table Of Contents
3 Replacement Procedure......................7 3.1 Cut off the power supply of STS............................7 3.2 Replacement Procedure................................ 7 3.3 Restore the power supply of STS.............................36 3.4 Observe the STS repair............................... 36 Issue 01 (2021-11-22) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 5: Tool Introduction
Oil filling port position: middle of the top Valves: with Flange sealing cap: with Quantity: 1 pump Voltage: 12 V Power: ≥ 500 W Inner diameter of matching tubing: 25 mm Issue 01 (2021-11-22) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 6 Length 2: 4 m x 1 Flange Quantity: 2 Inner diameter of matching tube: 25 mm Outer diameter 1: matching top drain valve Outer diameter 2: matching bottom drain valve Issue 01 (2021-11-22) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 7 Quantity: 1 -ble Hole opening range: > 30 mm wrench Hold Quantity: 8 hoop Size: matching inner diameter 25 mm casing Obtained locally (not available materi by air) al belt Issue 01 (2021-11-22) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 8 Obtained locally (not available by air) Battery Obtained locally (not available by air, car batteries are available) cleanin Obtained locally g cloth (consumables) buckets Locally obtained Issue 01 (2021-11-22) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 9 Smartkits Guide to Transformer Low Voltage Bushing Replacement (No Handhole Replacement) 2 Tool Introduction Materi picture Remarks Low- Quantity: on demand voltage bushin Issue 01 (2021-11-22) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 10: Replacement Procedure
Step 2 Switch off the ACB of low-voltage cabinets LVA and LVB. ----End 3.2 Replacement Procedure Step 1 Connect the oil storage bag, oil pump and flange with oil pipe, and fix the oil pipe with throat hoop. Issue 01 (2021-11-22) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 11 Guide to Transformer Low Voltage Bushing Replacement (No Handhole Replacement) 3 Replacement Procedure Step 2 Connect flange and drain valve at the bottom of transformer. Step 3 Connect oil pump and battery Issue 01 (2021-11-22) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 12 , keep the engine running. Step 4 Remove the dehydrating breather. Step 5 Remove the fixing clip of the breathing tube. Issue 01 (2021-11-22) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 13 Step 6 Take down and remove the breathing tube. Step 7 Loosen the air exhausting plug at the top of the oil conservator and cover it with a cleaning cloth. Issue 01 (2021-11-22) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 14 3. When the first oil storage bag is full of oil, stop oil draining, close the transformer oil drain valve, and close the oil storage bag valve. Issue 01 (2021-11-22) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 15 Smartkits Guide to Transformer Low Voltage Bushing Replacement (No Handhole Replacement) 3 Replacement Procedure Step 9 Close the gas relay valve. Issue 01 (2021-11-22) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 17 Step 12 Remove the connection between the faulty bushing and the soft copper bar. Step 13 Remove the box cover bolts and collect the bolts in a box or jar to avoid loss. Issue 01 (2021-11-22) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 18 Smartkits Guide to Transformer Low Voltage Bushing Replacement (No Handhole Replacement) 3 Replacement Procedure Step 14 Install the lifting screws at the four corners of the box cover. Issue 01 (2021-11-22) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 19 4. Install the other 3 lifting guides in the same way 5. Check whether the cables hinder the lifting of the box cover to prevent cables from being damaged by the lifting of the box cover. Issue 01 (2021-11-22) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 20 Smartkits Guide to Transformer Low Voltage Bushing Replacement (No Handhole Replacement) 3 Replacement Procedure Step 15 Lift box cover approx. 3 cm Issue 01 (2021-11-22) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 21 Use a wrench to fix the nut, rotate the screw by ratchet wrench, and slowly lift the box cover. When one corner is raised up 1cm, change to the other corner, and evenly lift the box cover. (Uneven lifting may cause cover to deviate) Issue 01 (2021-11-22) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 22 Replacement (No Handhole Replacement) 3 Replacement Procedure Step 16 Install 2 limit screws (In order to limit the offset of the case cover and prevent the case cover from falling over) Issue 01 (2021-11-22) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 23 3. Install another nut at the bottom of the screw and tighten the two nuts. 4. Install another limiting screw in the same way on the short side of the other box cover. Issue 01 (2021-11-22) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 24 Replacement (No Handhole Replacement) 3 Replacement Procedure Step 17 Continue to lift the box cover to the maximum height (the top of the oil conservator contacts the top of the container). Issue 01 (2021-11-22) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 25 Replacement (No Handhole Replacement) 3 Replacement Procedure Step 18 Clean the seal grooves and remove oil stains and dirt. Step 19 Remove the soft connection copper bar from the faulty bushing. Issue 01 (2021-11-22) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 26 Replacement (No Handhole Replacement) 3 Replacement Procedure Step 20 Remove the low-voltage bushing, and remove the bushing and bushing fastener. Check the cause of the fault and take photos. Issue 01 (2021-11-22) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 27 Smartkits Guide to Transformer Low Voltage Bushing Replacement (No Handhole Replacement) 3 Replacement Procedure Step 21 Replace the low-voltage bushing with a new one. Issue 01 (2021-11-22) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 28 3. Install the fixing steel plate and tighten the bolts. Tighten the bolts gradually in the diagonal sequence to avoid directly locking a single bolt at a time. Installation torque: 45 Nm. Step 22 Lower the lid height to 3 cm. Issue 01 (2021-11-22) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 29 NO TE If the gasket is visible from the screw hole, there is interference. If it interferes, lift the box cover again and arrange the sealing gasket. Issue 01 (2021-11-22) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 30 Therefore, all bolts shall be tightened for no less than 3 times in sequence. Installation torque: 45 Nm. Step 27 Open gas relay valve Issue 01 (2021-11-22) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 31 Step 29 Open the oil drain valve at the bottom of the transformer, open the oil storage bag valve, start the oil pump, and start the oil filling. Issue 01 (2021-11-22) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 32 2. In the late stage of oil injection, fold the oil storage bag to allow the oil to flow to the flange. 3. When the oil filling is nearly completed, lift the capsule and try to fill the oil in the oil storage bag into the transformer. Issue 01 (2021-11-22) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 34 5. Deflate all radiator in the same manners. 6. After the completion of the deflation, the transformer oil level will decrease relative to that before the deflation. Issue 01 (2021-11-22) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 35 Smartkits Guide to Transformer Low Voltage Bushing Replacement (No Handhole Replacement) 3 Replacement Procedure Step 32 Gas relay deflates. Issue 01 (2021-11-22) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 37 Step 34 Install the connecting flange between the transformer and the low-voltage cabinet. Step 35 Install the cover plate of the bus compartment of the low-voltage cabinet. Step 36 The capsule is inflated. Issue 01 (2021-11-22) Copyright © Huawei Digital Power Technologies Co., Ltd.
Page 39: Restore The Power Supply Of Sts
If there is gas in the gas relay, it is necessary to deflate. Step 2 Keep the customer observing for one week. If no oil leaks, the repair is completed. ----End Issue 01 (2021-11-22) Copyright © Huawei Digital Power Technologies Co., Ltd.

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Summary of Contents for Huawei Smartkits V100R002C00

Page 3: Table Of Contents

Page 4: Overview

Page 5: Tool Introduction

Page 10: Replacement Procedure

Page 39: Restore The Power Supply Of Sts