Megger HPA 100 AC User manual

HPA 100/110/120 AC / HPA 130 DC
High Voltage Test Unit
USER GUIDE
Issue: A (11/2021) - EN
Item number: 128311818

Consultation with Megger
The present system manual has been designed as an operating guide and for reference. It is
meant to answer your questions and solve your problems in as fast and easy a way as possible.
Please start with referring to this manual should any trouble occur.
In doing so, make use of the table of contents and read the relevant paragraph with great
attention. Furthermore, check all terminals and connections of the instruments involved.
Should any question remain unanswered, please contact:
Megger Limited Megger Germany GmbH (Baunach)
Archcliffe Road
Kent CT17 9EN
T: [phone]
F: [phone]
E: [email protected]om
Dr.-Herbert-Iann-Str. 6
D - 96148 Baunach
T: [phone] – 0
F: [phone]
E: [e-mail]
Megger Germany GmbH (Radeburg) Megger USA
Röderaue 41
D - 01471 Radeburg / Dresden
T: [phone] – 0
F: [phone]
E: [e-mail]
Valley Forge Corporate Centre
2621 Van Buren Avenue
Norristown, PA 19403 USA
T: [phone]
F: [phone]
Megger
All rights reserved. No part of this handbook may be copied by photographic or other means unless Megger have
before-hand declared their consent in writing. The content of this handbook is subject to change without notice. Megger
cannot be made liable for technical or printing errors or shortcomings of this handbook. Megger also disclaim all
responsibility for damage resulting directly or indirectly from the delivery, supply, or use of this matter.

Terms of Warranty
Megger accept responsibility for a claim under warranty brought forward by a customer for a
product sold by Megger under the terms stated below.
Megger warrant that at the time of delivery Megger products are free from manufacturing or
material defects which might considerably reduce their value or usability. This warranty does not
apply to faults in the software supplied. During the period of warranty, Megger agree to repair
faulty parts or replace them with new parts or parts as new (with the same usability and life as
new parts) according to their choice.
Megger reject all further claims under warranty, in particular those from consequential damage.
Each component and product replaced in accordance with this warranty becomes the property
of Megger.
All warranty claims versus Megger are hereby limited to a period of 12 months from the date of
delivery. Each component supplied by Megger within the context of warranty will also be
covered by this warranty for the remaining period of time but for 90 days at least.
Each measure to remedy a claim under warranty shall exclusively be carried out by Megger or
an authorized service station.
To register a claim under the provisions of this warranty, the customer has to complain about
the defect, in case of an immediately detectable fault within 10 days from the date of delivery.
This warranty does not apply to any fault or damage caused by exposing a product to conditions
not in accordance with this specification, by storing, transporting, or using it improperly, or
having it serviced or installed by a workshop not authorized by Megger. All responsibility is
disclaimed for damage due to wear, will of God, or connection to foreign components.
For damage resulting from a violation of their duty to repair or re-supply items, Megger can be
made liable only in case of severe negligence or intention. Any liability for slight negligence is
disclaimed.

List of contents
1Safety Advice.................................................................................................. 1
2Technical Data ................................................................................................ 5
3General ............................................................................................................ 7
4Design ............................................................................................................. 9
5Electrical Connection................................................................................... 10
6Putting into Operation.................................................................................. 12
7Overcurrent Protection ................................................................................ 14
8Discharging the Cable System .................................................................... 16

1
1 Safety Advice
Working with equipment of Megger
All electrical regulations of the country where the system is
operated have to be observed as well as national regulations for
prevention of accidents and existing regulations for the safety and
operation of equipment of the involved companies.
After working with the equipment, make sure to de-energise,
protect against re-energising, discharge, ground and short-circuit
the instrument and installations that have been worked on.
Original accessories ensure safe operation of the equipment. It is
not allowed and the warranty is lost if other accessories than the
original ones are used with the equipment.
Operating personal
Only trained and/or instructed staff is permitted to deal with this
system and its peripherals. Keep any other person away from it.
Only authorised persons with sufficient expertise are allowed to
operate the device.
Repair and maintenance
Repairs and service must only be done by Megger or authorised
service departments of Megger. Megger recommends having the
equipment serviced and checked once per year at a Megger
service location.
Megger also offers direct on-site support. Please
contact our
service office for more information.

2
Intended application
Safe operation is only realised when using the equipment for its
intended purpose. Using the equipment for other purposes may
lead to human danger and damage of equipment of involved
installations.
The limits described under technical data may not be exceeded.
Operating products of Megger in condensing environment may
lead to flash-over, danger and damage. The instruments should
only be operated under tempered conditions. It is not allowed to
operate Megger products at direct contact with humidity, water or
near aggressive chemicals nor explosive gases and fumes.
Behaviour at malfunction of normal operation
The equipment may only be used when working properly. When
irregularities o
r malfunctions appear that cannot be solved
consulting this manual, the equipment must immediately be put
out of operation and marked as not functional. In this case inform
the person in charge who should inform the Megger service to
resolve the problem. The instrument may only be operated when
the malfunction is resolved.
Five safety rules
The five safety rules must always be followed when working with
HV (High Voltage):
1. De-energise
2. Protect against re-energising
3. Confirm absence of voltage
4. Ground and short-circuit
5. Cover up or bar-off neighbouring energised parts

3
Using cardiac pacemaker
Physical processes during operation of high voltage
may endanger persons wearing a cardiac pacemaker
when near these high voltage facilities.
Fire fighting in electrical installations
•According to regulations, carbon dioxide (CO2) is
required to be used as extinguishing agent for
fighting fire in electrical installations.
•Carbon dioxide is electrically non conductive and
does not leave residues. It is safe to be used in
energized facilities as long as the minimum distances
are maintained. A CO2 fire extinguisher must be
always available within electrical installations.
•If, contrary to the regulations, any other extinguishing
agent is used for fire fighting, this may lead to
damage at the electrical installation. Megger
disclaims any liability for consequential damage.
Furthermore, when using a powder extinguisher near
high-voltage installations, there is a danger that the
operator of the fire extinguisher will get an electrical
shock from a voltage arc-over (due to the powder
dust created).
•It is essential to observe the safety instruction on the
extinguishing agent.
•Applicable is DIN VDE 0132.

4
Dangers when operating with HV
Special attention and safety-conscious behaviour is needed when
operating HV facilities and especially non-stationary equipment.
The regulations VDE 0104 abo
ut setting up and operation of
electric test equipment, i.e. the corresponding EN 50191 as well
as country-specific regulations and standards must be observed.
•Safety installations may not be by-passed nor deactivated.
•To avoid hazardous electric charges of metallic parts in the
vicinity, all metallic parts must be grounded.
•To avoid drawing dangerous arcs, switching should only be
done in de energized condition.
•HV test equipment and burn-down equipment is short-circuit
proof. Hazardous voltage may be present if a short circuit is
opened during operation. If measuring short-circuit current is
necessary, it is advisable to connect an arrester in parallel with
the measuring instrument (e.g. 90 V glow arrester).
•The equipment and all accessories must be connected
according to applicable standards VDE, EN or DIN as well as
country-specific regulations.

5
2 Technical Data
Voltage control unit HSG 10 – 1
Output power
5 kVA
Short-time operation
7,5 kVA
Mains voltage
220 V
Adjustable Voltage
0 ... 250 V
Measuring range
50 / 100 / 150 kV
Dimensions
520 x 430 x 465 mm
Weight
75 kg
High voltage transformer HTR 100/110/120
Nominal voltage
100 / 110 / 120 kV AC
Continuous output
5 kVA
Short-time output
7,5 kVA
Frequency
50 Hz or 60 Hz
Short circuit voltage
appr. 5 %
PD at nominal voltage
> 1 pC
Weight
ca. 225 kg
High voltage rectifier
HGL 150
for 130 kV DC tests

6

7
3 General
The Megger High Voltage Test Equipment is designed for
mounting in a cable test van and is used for testing of cable
installations and for burning down high resistance cable faults
with ignition voltages in the high voltage range.
HTR HSG 10
The equipment mainly consists of
a)
The high voltage control unit HSG 10, whereby the
number 10 indicates the power capacity of the control
unit.
b)
The high voltage transformer HTR. This transformer can
be loaded with 5 kVA. On direct mains connection,
i.e. without using the control unit, 10 kVA can be
withdrawn from the transformer for a short period of time.

8

9
4 Design
Figure 1 : Operation panel
1.
Bu.2-Earthing switch
18.
Pilot lamp ”Shock
discharge 100kV”
2.
Bu.7-Indication panel
19.
mA-Range switch
3.
Bu.3-Impulsing/Testing
20.
Milliammeter
4.
Bu.4-Impulsing 50kV/100kV
21.
Operation selection switch
5.
Bu.5-Emergency-Off-Switch
22.
Earth terminal
6.
Bu.6-Spark gap
23.
Regulating transformer
7.
Mains 220V-50Hz
24.
Spark gap ” - ”
8.
HV transformer
25.
Spark gap ” – ”
9.
Bu.1-Pre-switching unit
26.
Fuse 1A
10.
Bu.8-External kV-testing
27.
Fuse 1A
11.
kV-Meter
28.
Switch ”Off“
12.
Timer 0 – 60 min.
29.
Circuit breakers 32A
13.
Pilot lamp ”Ready for mains
connection”
30.
Switch ”On”
14.
Pilot lamp ”Testing”
31.
Bu.9-Secondary current
15.
Pilot lamp ”Ready for
operation”
32.
Bu.10-VSG ”Ventilator”
16.
Pilot lamp ”Shock discharge
50kV”
33.
VSG ”On-Off”
17.
Pilot lamp ”High voltage”
14 13 15 16 17 18
30 28 34 25 24 23 22
11
12
26
29
27
20
19
21
33

10
5 Electrical Connection
Figure 2 : HTR connection panel
* HGL 150 is only to be used in DC operation mode
Figure 3 : Electrical connection
Phase
Operational
earth
HV connection
point
HTR
HGL 150*
HSG 10-1
(8)
(31)
(7)

11

12
6 Putting into Operation
1.
Set variac (23) to position ZERO.
2.
Set current range switch (19) to the largest test range.
3.
Set operation selection switch (21) to the desired
operation mode.
4.
Switch on the circuit breaker (29). Now the green pilot
lamp (15) lights up indicating that the instrument is ready
for operation.
5.
Press push button ON (30). The red pilot lamp (17) lights
up.
6.
Set desired test voltage by means of the variac (23) and
read it off on the kV-meter (11).
7.
Read off the test current on the mA-meter (20) and set
current range switch (19) to suitable test range.
8.
After the full test voltage has been reached, the desired
test period can be set on timer (12). After the test period
set, the instrument switches off automatically.
9.
After the test is completed, set variac (23) to Zero
position. Switch off the control unit by means of push
button OFF (28). If high voltage is still indicated, this
means that the cable under test has not been discharged.
CAUTION !
In the case of DC voltage testing, the cable under test is
still charged. Discharge is effected by operating push
button OFF (35) on the mains operation panel in the test
van.
10.
Push buttons (24, 25) of the control unit serve for
connection of the spark gap, provided this is built-into the
test van.
11.
The voltage present at the output can be read off from
the kV-meter (11).