Megger DELTA4000 User manual

AVTMDELTA4000-EN
Rev 6
April 2018
Instruction Manual
DELTA4000
12-kV Insulation Diagnostic System
HIGH VOLTAGE EQUIPMENT
Read this entire manual before operating.
M
Valley Forge Corporate Center
2621 Van Buren Avenue
Norristown, PA 19403-2329
U.S.A.
610-676-8500
www.megger.com

DELTA4000
12-kV Insulation Diagnostic System

Copyright© 2018 by Megger. All rights reserved.
The information presented in this manual is believed to be adequate for the intended use of the product.
If the product or its individual instruments are used for purposes other than those specified herein,
confirmation of their validity and suitability must be obtained from Megger. Refer to the warranty
information below. Specifications are subject to change without notice.
WARRANTY
Products supplied by Megger are warranted against defects in material and workmanship for a period of
one year following shipment. Our liability is specifically limited to replacing or repairing, at our option,
defective equipment. Equipment returned to the factory for repair must be shipped prepaid and insured.
Contact your MEGGER representative for instructions and a return authorization (RA) number. Please
indicate all pertinent information, including problem symptoms. Also specify the serial number and the
catalog number of the unit. This warranty does not include batteries, lamps or other expendable items,
where the original manufacturer’s warranty shall apply. We make no other warranty.
The warranty is void in the event of abuse (failure to follow recommended operating procedures) or
failure by the customer to perform specific maintenance as indicated in this manual.
M
Valley Forge Corporate Center
2621 Van Buren Ave
Norristown, PA 19403-2329
610-676-8500 (Telephone)
610-676-8610 (Fax)
www.megger.com

AVTMDELTA4000-EN Rev 6 April 2018
i
Table of Contents
!
1 Introduction........................................................................................................................................................... 1!
Receiving Instructions..................................................................................................................................... 1!
General Information........................................................................................................................................ 1
2 Safety....................................................................................................................................................................... 3!
Precautions........................................................................................................................................................ 3!
Warning and Caution Notices........................................................................................................................ 5
3 Specifications......................................................................................................................................................... 7!
Technical Specifications.................................................................................................................................. 7!
Test Modes......................................................................................................................................................10!
Maximum Specimen Capacitance................................................................................................................11!
Safety Features................................................................................................................................................ 12!
Accessories...................................................................................................................................................... 13!
Included Accessories .....................................................................................................................................13!
Optional Accessories..................................................................................................................................... 13
4Controls, Indicators, and Connectors ............................................................................................................. 15!
Control Unit Side Panel ................................................................................................................................15!
High Voltage Unit Connector Panel........................................................................................................... 18!
DELTA4310A Top Panel Features ............................................................................................................19
5 Setup and Operation ..........................................................................................................................................21!
Safety Precautions ..........................................................................................................................................21!
Setup.................................................................................................................................................................22
6 Delta Control User Interface ............................................................................................................................ 27!
Introduction.................................................................................................................................................... 27!
Operation ........................................................................................................................................................ 28!
Test Mode . .....................................................................................................................................................28!
UST mode . .....................................................................................................................................................28
GST mode. .....................................................................................................................................................28
Test Mode Examples.....................................................................................................................................29!
Two winding transformer test................................................................................................................. 29!
Three winding transformer test............................................................................................................... 30!
Frequency and Temperature ........................................................................................................................31!
Test Type......................................................................................................................................................... 31!
Voltage Control.............................................................................................................................................. 33!
Start and Stop ................................................................................................................................................. 34!
Oscilloscope....................................................................................................................................................34!
Results..............................................................................................................................................................34!
Indicators.........................................................................................................................................................35!
Menu ................................................................................................................................................................ 36!
Settings.............................................................................................................................................................37!
General........................................................................................................................................................37!

AVTMDELTA4000-EN Rev 6 April 2018
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Power Factor/Tan-Delta ......................................................................................................................... 37!
Excitation Current..................................................................................................................................... 38!
Auto Tip-up Test....................................................................................................................................... 38!
Results ......................................................................................................................................................... 38!
Frequency Sweep....................................................................................................................................... 38!
Manual......................................................................................................................................................... 38!
Language..................................................................................................................................................... 38!
Graph .......................................................................................................................................................... 39!
Log............................................................................................................................................................... 39
7 PowerDB User Interface................................................................................................................................... 41!
Introduction.................................................................................................................................................... 41!
Minimum Recommended System ............................................................................................................... 41!
Software Installation (PC portion only) ..................................................................................................... 42!
Using DELTA4000 with PowerDB............................................................................................................ 44!
Test Form Controls - General ..................................................................................................................... 45!
General Options............................................................................................................................................. 46!
Nameplate Header Input ......................................................................................................................... 48
8 Performing Tests within Forms ....................................................................................................................... 51!
Description of Tests...................................................................................................................................... 52!
Transformer Overall Tests....................................................................................................................... 52!
Overall Test Options ................................................................................................................................ 53!
Bushing C1 Tests....................................................................................................................................... 55!
Bushing C2 Tests....................................................................................................................................... 56!
Surge Arresters........................................................................................................................................... 57!
Bushing Hot Collar Tests......................................................................................................................... 58!
Ratio Tests.................................................................................................................................................. 58!
Exciting Current Tests.............................................................................................................................. 60!
Multiple Quick Tests................................................................................................................................. 61
9 Maintenance and Calibration ............................................................................................................................ 63!
Maintenance.................................................................................................................................................... 63
Calibration....................................................................................................................................................... 63!
Troubleshooting............................................................................................................................................. 64!
General Guidelines ........................................................................................................................................ 64!
Open Air Test................................................................................................................................................. 64!
Repair............................................................................................................................................................... 65!

AVTMDELTA4000-EN Rev 6 April 2018
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Upon Receipt of Product
Prior to operation, check for loosened hardware or damage incurred during
transit. If these conditions are found, a safety hazard is likely, DO NOT attempt
to operate equipment. Please contact Megger as soon as possible.
DELTA4110 Transformer Test Set
DELTA4300A Transformer Test Set

AVTMDELTA4000-EN Rev 6 April 2018
1
1
Introduction
Receiving Instructions
Check the equipment received against the packing list to ensure that all materials
are present. Notify Megger of any shortage.
Examine the instrument for damage received in transit. If damage is discovered,
file a claim with the carrier at once and notify Megger, giving a detailed
description of the damage.
This instrument has been thoroughly tested and inspected to meet rigid
specifications before being shipped. It is ready for use when set up as indicated
in this manual.
General Information
The DELTA4000 is used for shop and field testing of high-voltage electrical
insulating systems at test voltages up to 12 kV. Test results can be used to
evaluate the nature and quality of electrical insulating materials and
manufacturing processes to reveal contamination, fractures, punctures, and other
defects that accompany the aging of insulation. The test set comprises of a
control unit, a high-voltage unit, cables, and canvas carrying bags. Refer to the
Specifications section for a list of included accessories.
Tests are made by measuring the capacitance and dissipation factor (power
factor) of a specimen. The values measured will change when undesirable
conditions exist, such as moisture on or in the insulation; presence of conductive
contaminants in insulating oil, gas or solids; presence of internal partial
discharges etc.
The test set measures insulation properties in high-voltage power equipment
such as transformers, bushings, rotating machines, cables, circuit breakers,
capacitors, surge (lightning) arresters etc. In addition, the test set can also
measure transformer excitation current and transformer turns ratio (with
optional TTR capacitor).
DELTA4000 makes all standard Ungrounded Specimen Tests (UST) and
Grounded Specimen Tests (GST) on high-voltage apparatus and key features
include:

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AVTMDELTA4000-EN Rev 6 April 2018
2
§Two-piece design for easy transportation Rugged and robust and only
14+22 kg (31+48 lb)
§Handling up to 15 mA interference current into any lead of the
instrument or a signal to noise ratio of 1:20, secures stable readings and
correct data even in the highest interference switchyards.
§Standard 50/60 Hz measurements as well as 1-500 Hz frequency sweep
reveals more details in the insulation characteristics.
§Variable frequency source allows larger capacitance specimen to be tested
without the need for special resonating inductors
§Advanced signal acquisition and noise suppression circuitry results in 25-
50% shorter measurement times
§Individual temperature correction (ITC) feature enables an accurate
temperature correction of measurements taken at high and low
temperatures. Temperature table corrections are no longer required.
§Two operation modes; Form-based, automated testing with PowerDB or
run your specific test manually controlled with Delta Control.
§Enhanced safety features with safety hand switches, foot switch, warning
strobe light and a ground interlock system.
§Optional resonating inductor provides capability of testing high
capacitance samples at high voltage.