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
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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

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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
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§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.

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2
Safety
Precautions
The test set and the specimen to which it is connected are a possible source of
high-voltage electrical energy and all persons making or assisting in tests must
use all practical safety precautions to prevent contact with energized parts of the
test equipment and related circuits. Also follow all local and company safety
requirements. Persons actually engaged in the test must stand clear of all parts of
the complete high-voltage circuit, including all connections, unless the test set is
de-energized and all parts of the test circuit are grounded. Persons not directly
involved with the work must be kept away from test activities by suitable
barriers, barricades, or warnings.
Treat all terminals of high-voltage power equipment as a potential electric shock
hazard. There is always the potential of voltages being induced at these terminals
because of proximity to energized high-voltage lines or equipment. Always use a
safety ground stick to ground the high-voltage conductor. A safety ground
jumper must then be installed between all terminals of apparatus under test and
ground. Always disconnect test leads from test specimen before attempting to
disconnect them at the test set. The ground connection on the test set must be
the first made and the last removed. Any interruption of the grounding
connection can create an electric shock hazard.
This instrument operates from a single-phase power source. It has a three-wire
power cord and requires a two-pole, three-terminal, live, neutral, and ground type
connector. The voltage to ground from the live and neutral poles of the power
source must be within the following rated operating voltage:
100-240 V ± 10 %, 50/60 Hz, 16A
Before making connection to the power source, determine that the instrument
rating matches the voltage of the power source and has a suitable two-pole,
three-terminal grounding connector.
The power input plug must be inserted only into a mating receptacle with a
ground contact. Do not bypass the grounding connection. Any interruption of
the grounding connection can create an electric shock hazard. Determine that the
receptacle is properly wired before inserting the plug.

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It is not possible to eliminate all potential hazards from, and in using, electrical
test equipment. For this reason, every effort has been made to point out in this
instruction manual the proper procedures and precautions to be followed by the
user in operating this equipment and to mark the equipment itself with
precautionary warnings where appropriate. It is not possible to foresee every
hazard which may occur in the various applications of this equipment. It is
therefore essential that the user, in addition to following the safety rules in this
manual, also carefully consider all safety aspects of the test before proceeding.
§Safety is the responsibility of the user.
§Misuse of this high-voltage equipment can be extremely dangerous.
§The purpose of this equipment is limited to use as described in this
manual. Do not use the equipment or its accessories with any device
other than specifically described.
§Never connect the test set to energized equipment.
§Operation is prohibited in rain or snow.
§Do not use the test set in an explosive atmosphere.
§A qualified operator should be in attendance at all times while the test
equipment is in operation.
§Observe all safety warnings marked on the equipment.
§Corrective maintenance must only be performed by qualified personnel
who are familiar with the construction and operation of the test set and
the hazards involved.
§Refer to e.g. IEEE 510 - 1983, "IEEE Recommended Practices for
Safety in High-Voltage and High-Power Testing," for information.
As a routine safety procedure some users require that rubber gloves be worn, not
only when making connections to the high-voltage terminals, but also when
manipulating the controls.
High-voltage discharges and other sources of strong electric or magnetic fields
may interfere with the proper functioning of heart pacemakers. Persons with
heart pacemakers should obtain expert advice on the possible risks before
operating this equipment or being close to the equipment during operation.

Safety
!
AVTMDELTA4000-EN Rev 6 April 2018
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Warning and Caution Notices
Warning and caution notices are used throughout this manual where applicable
and should be strictly observed. These notices appear in the format shown below
and are defined as follows:
F
WARNING
Warning, as used in this manual, is defined as a
condition or practice which could result in personal
injury or loss of life.
G
CAUTION
Caution, as used in this manual, is defined as a
condition or practice which could result in damage
to or destruction of the equipment or apparatus
under test.

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3
Specifications
Technical Specifications
Input Power:
100-240 V ± 10 %, 50/60 Hz, 16 A max
Output voltage:
0 to 12 kV, continuously adjustable
Test frequency range:
45-70 Hz (12 kV)
15-405 Hz (4 kV)
1-505 Hz (250 V)
Details relating to frequency range:
45Hz – 350Hz - 12 kV – 100mA, continuous
45Hz – 350Hz - 12 kV – 300mA, 4 minutes
45Hz – 400 Hz - 10 kV – 100mA, continuous
45Hz – 400Hz - 10 kV – 300mA, 4 minutes
Max Current
(mA)
Max Voltage
(kV)
Frequenc
y (Hz)
Capacitanc
e (nF)
300
12
60
67
300
8
60
100
300
6
60
133
300
4
60
200
300
2
60
400
300
12
45
89
300
8
45
133
300
6
45
178
300
4
45
267
300
8
30
200
300
6
30
267
300
4
30
400
300
4
15
800
300
2
15
1600

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Output power:
3.6 kVA
Output Current:
>100 mA, continuous output
>300 mA, up to 4 minutes
The output current capacity can be expanded to 4 A
using the optional Resonating Inductor, catalog number
670600-1
Measuring Ranges:
Voltage:
25 V to 12 kV, 1 V maximum resolution
Current:
0 to 5 A, 0.1 A maximum resolution
The measurement can be corrected to either 2.5 kV or
10 kV equivalents
Capacitance:
0 to 100 F, 0.01 pF maximum resolution
Inductance:
6H to 10MH, 0.1 mH maximum resolution
Power Factor:
0 to 100%, 0.001% maximum resolution
Dissipation Factor:
0 to 100, 0.001% maximum resolution
Watt Loss:
0 to 2 kW, actual power, 0 to 100 kW when corrected to
10 kV equivalent. 0.1mW maximum resolution.
The measurement can be corrected to either 2.5 kV or
10 kV equivalents.
Temperature Correction:
Individual temperature correction (ITC) from 5°C to
50°C test temperature to 20°C reference, (using Power
DB)
Standard tables for temperature corrections
Accuracy:
Voltage:
±(1% of reading)
Current:
±(1% of reading)
Capacitance:
±(0.5% of reading + 1 pF)
Inductance:
±(0.5% of reading + 1 mH)
Power Factor:
±(0.5% of reading + 0.02%)
Dissipation Factor:
±(0.5% of reading + 0.02%)
Watt Loss:
±(1% of reading + 1mW)

Specifications
!
AVTMDELTA4000-EN Rev 6 April 2018
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Noise Immunity:
Electrostatic:
15mA induced noise into any test lead with no loss of
measurement accuracy at maximum interference to
specimen current of 20:1
Electromagnetic:
500 T, at 50 Hz in any direction
Computer Interfaces:
Printer:
USB
Communication:
Ethernet and USB
Industrial Controller
(DELTA4310A):
Touchscreen Display (ruggedized for field use)
Size: 300 mm (12 in.)
Resolution: 1024 x 768 (XGA)
Luminance: 1600 nits
Coating: anti-glare
Backlight: LED
Technology: 4-wire resistive touchscreen
Memory: 32 Gigabits (SSD)
Data Storage:
Internal computer:
Up to 100,000 data sets (up to 32GB)
External:
Pending external computer and/or flash memory size
Control Software:
PowerDB and Delta Control
Safety Qualifications:
IEC/ANSI 61010-1
Environment:
Temperature:
Operating: -20 to +55° C
Storage: -50 to +70° C
Relative Humidity:
Operating: 0 to 90% non-condensing
Storage: 0 to 95% non-condensing
Shock and vibration:
ASTM D999.75
EMC:
EN 61326-1
Dimensions:
Control Unit:
290 x 290 x 460 mm (not including handles)
High Voltage Unit:
290 x 290 x 460 mm (not including handles)

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Weight:
DELTA4100 Control Unit
(to be used with external
computer):
14kg (33lbs)
DELTA4300A Control
Unit (with on-board
computer):
15kg (31lbs)
DELTA4110 HV Unit:
22 kg (48lbs)
Standard cables:
14 kg (30lbs)
Test Modes
DELTA4000 supports the following test modes:
UST: Ungrounded Specimen Testing
Test mode
Measure
Ground
Guard
UST-R
UST-B
UST-RB
Red
Blue
Red and Blue
Blue
Red
---
---
---
---
GST: Grounded Specimen Testing
Test mode
Measure
Ground
Guard
GST-GND
GSTg-R
GSTg-B
GSTg-RB
Ground
Ground
Ground
Ground
Red and Blue
Blue
Red
---
---
Red
Blue
Red and Blue

Specifications
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Maximum Specimen Capacitance
Table 1 shows the maximum measurable specimen capacitance at various
voltages and loading time. This can be increased up to 1.2µF at 10 kV (50 Hz)
test voltage using the optional Resonating Inductor.
Table 1: Maximum Measureable Specimen Capacitance at 50/60Hz
Test
Volts
(kV)
Maximum Capacitance
(µF)
(100 mA continuos
service)
Maximum Capacitance
(µF)
(300 mA for 4 minutes)
60 Hz
50 Hz
60 Hz
50 Hz
0.025
11
13
32
38
0.05
5.3
6.3
16
19
0.1
2.6
3.2
7.9
9.5
0.25
1.1
1.3
3.2
3.8
0.5
0.53
0.63
1.6
1.9
1
0.26
0.32
0.79
0.95
2
0.13
0.16
0.40
0.48
3
0.09
0.11
0.27
0.32
4
0.065
0.080
0.20
0.24
5
0.11
0.063
0.16
0.19
6
0.044
0.055
0.13
0.16
8
0.033
0.040
0.099
0.12
10
0.027
0.032
0.080
0.095
12
0.022
0.027
0.066
0.080
ALL FREQUENCIES AND LIMITS ARE LISTED IN SECTION 3 –
FREQUENCY SPECIFICATIONS

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Safety Features
Safety features include;
§External hand plus foot (second external hand switch is optional)
interlock switches must be closed to energize high-voltage circuit.
§Dual ground required to energize high-voltage circuit.
§Circuit breaker for short-circuit protection.
§All controls at ground potential.
§Over-voltage protective devices prevent damage to test set in the event
of specimen breakdown.
§Low-voltage inputs are grounded when the test set is turned off or
between measurements.