Megger CSU600A User manual

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User’s Manual
CSU600A/AT
Current Supply Units
Art No. ZP-BF05E Doc. BF0217CE V01 2014

CSU600A/AT
Current Supply Units
NOTICE OF COPYRIGHT & PROPRIETARY RIGHTS
© 2013, Megger Sweden AB. All rights reserved.
The contents of this manual are the property of Megger Sweden AB. No part of this work may be reproduced or transmitted in any form or
by any means, except as permitted in written license agreement with Megger Sweden AB. Megger Sweden AB has made every reasonable
attempt to ensure the completeness and accuracy of this document. However, the information contained in this manual is subject to change
without notice, and does not represent a commitment on the part of Megger Sweden AB. Any attached hardware schematics and technical
descriptions, or software listings that disclose source code, are for informational purposes only. Reproduction in whole or in part to create
working hardware or software for other than Megger Sweden AB products is strictly prohibited, except as permitted by written license
agreement with Megger Sweden AB.
TRADEMARK NOTICES
Megger® and Programma® are trademarks registered in the U.S. and other countries. All other brand and product names mentioned in this
document are trademarks or registered trademarks of their respective companies.
Megger Sweden AB is certified according to ISO 9001 and 14001.
User’s Manual
Postal address:
Megger Sweden AB
Box 724
SE-182 17 DANDERYD
SWEDEN
T [phone]
F [phone]
[e-mail]
www.megger.com
Visiting address:
Megger Sweden AB
Rinkebyvägen 19
SE-182 36 DANDERYD
SWEDEN
BF0217CE ZP-BF05E CSU600A/AT 3

4CSU600A/AT ZP-BF05E BF0217CE
1 SAFETY
1Safety
Important
Read the manual and comply with the fol‑
lowing instructions before using
CSU600A/AT.
Always comply with local safety regula‑
tions.
WARNING
Protective ground (earth)
Single ground system. This equipment can be used
only in electrical systems with single ground.
The user must verify before connecting this unit to
power, that High Voltage Ground and Low Voltage
Protective Ground create a single protective ground
with no measurable voltage potential existing be-
tween these ground systems. If a voltage potential
is found between the ground systems please consult
local safety regulations.
Mains cord with protective conductor. The CSU600A/
AT is equipped with a power cord with integrated
safety ground pin. Do not defeat the safety ground in
any manner. The equipment must be connected to a
grounded mains outlet. Not doing so may result in fire
or electric shock.
Separate ground wire. The CSU600A/AT case must
also be grounded by the separate protective ground
wire with connection to the Protective Conductor
Terminal on top of the CSU600A/AT.
Check the continuity of the protective ground wire
before each use. Make sure the connector is fastened
properly to the CSU600A/AT Protective Conductor Ter-
minal. Make sure the connection point at the ground
system is fastened properly. Route the wire so that it is
unlikely to be walked on or that it may loosen acci-
dentally by someone or something moving near it.
Note: The protective ground wire must not be loos-
ened while any input connector is attached to the
contacts of a high voltage circuit breaker or another
device being subject to inductive or capacitive coupled
interference from surrounding high voltage wires.
Always ground the CSU600A/AT.
Before connecting CSU600A/AT, turn off its master
ON/OFF switch.
Only connect CSU600A/AT to an outlet protected with
16 A overcurrent protection.
Unplug CSU600A/AT from the mains supply when it is
left unattended or not in use.
Do not attempt to service the CSU600A/AT your-
self. Opening or removing covers may expose you
to dangerous voltage. If you attempt to service the
CSU600A/AT yourself the warranty is no longer valid.
Do not use any accessories that are not intended for
use together with the CSU600A/AT.
Unplug CSU600A/AT from the wall outlet before
cleaning. Use a damp cloth for cleaning. Do not use
liquid cleaners or aerosol cleaners.
CAUTION
Use only approved mains detachable cable set with
the CSU600A/AT. Main supply cables shall be rated
for the maximum current for the equipment and the
cable shall meet the requirements of IEC 60227 or IEC
60245. Mains supply cables certified or approved by a
recognized testing authority are regarded as meeting
this requirement.
Refer all servicing to qualified service personnel.
If you need to return CSU600A/AT, please use either
the original crate or one of equivalent strength.

BF0217CE ZP-BF05E CSU600A/AT 5
2 CONTROL PANELS

6CSU600A/AT ZP-BF05E BF0217CE
2 CONTROL PANELS
2Control panels
CSU600A
1. Output terminals, 0‑600 A AC
2. Output for external ammeter, 600/6 A
Important
If not in use, this output must be short circuited.
3. Miniature circuit breaker for mains power
4. Red lamp which indicates that thermal cutout
has been triggered
5. Mains power connector
6. t‑output, used to trig external equipment, for
example a SVERKER™ when testing differen‑
tial relays. Contacts are syncronized with (7)
7. Current output ON/OFF
8. Protective ground conductor terminal
9. Mains‑power‑on indicator lamp
10. Current control knob
1
2
3
4
5
6
7
9
8
10

BF0217CE ZP-BF05E CSU600A/AT 7
2 CONTROL PANELS
CSU600AT
1. Output terminals 0–600 A AC
2. Output for external ammeter, 600/6 A
Important
If not in use, this output must be short circuited.
3. Miniature circuit breaker for mains power
4. Red lamp which indicates that thermal cutout
has been triggered
5. Mains power connector
6. t‑output, used to trig external equipment, for
example a SVERKER™ when testing differen‑
tial relays. Contacts are syncronized with (7)
7. Current output ON/OFF
8. Protective ground conductor terminal
9. Mains‑power‑on indicator lamp
10. Current control knob
11. Timer (0 ‑ 999.999 s)
12. Current indicator
13. Function switch (open or close function)
14. Timer stop input
15. Signal lamp for timer stop
1
2
15
5
6
4
12
7
11
13
14
3
8
10
9

8CSU600A/AT ZP-BF05E BF0217CE
3 OPERATING INSTRUCTIONS
3Operating instructions
General
Current Supply Units CSU600A/AT are used for:
• Performance and transformation-ratio testing of
current transformers.
• Primary testing of relay-type cutouts.
• Testing circuit breakers.
• Commissioning of substation switchgear.
Operating
Warning
Make certain that switch (7) is at the OFF
(0) position before making the connec‑
tions.
1] Connect CSU600A/AT to ground (protective
earth), terminal (8).
2] Set the variable transformer down to zero.
3] Connect the current cables to the device to
be tested.
4] Connect CSU600A/AT to mains power.
5] Set the switch (7) in ON‑position, ”1".
6] Check the output current using an external
ammeter. Connect the external ammeter to
the built‑in current transformer via terminal
(2).
Important
When a load is applied to the CSU600A/AT, con-
nector (2) must be short-circuited either via the
jumper that accompanies the equipment or an
external ammeter.
7] Adjust the output current to the desired
value using the current control knob (9).
Note Do not exceed maximum load time, see
"Specifications".
If you use a CSU600A and want to complete
the test with time measurements, see "Con-
necting a timer to CSU600A" below.
8] When you are finished, do not disconnect the
current cables from the output terminals until
you have turned switch (7) back to the OFF
"0" position.
Note The output transformer is protected with a ther-
mal cut out. If it has been triggered the red lamp
(4) will light. This protection will be automatically
reset when the temperature drops.
Timer stop input (CSU600AT)
The stop input can be connected to potential-free
terminals or to 12 – 250 V DC.
The timer can be stopped in the following ways:

BF0217CE ZP-BF05E CSU600A/AT 9
3 OPERATING INSTRUCTIONS
a) When a voltage is applied to the stop input or
when a contact is closed.
b) When a voltage applied to the stop input van-
ishes or when a contact is opened
When the timer is stopped, the current generation
stops and the signal lamp (15) lights up.
Important
You must apply the voltage with right
polarity otherwise the timer wont stop.
Note If the overheat protection has tripped the
timer display will go out. It will reset automati-
cally when the temperature drops.
Connecting a timer to CSU600A
1] Set switch (7) to OFF (0) position.
2] Connect the timer’s (Megger TM200 is
recommended) start input to the start timer
terminals (6). Connect the timer stop input
to a suitable point where it will detect the
triggering of a relay‑type cutout, a circuit
breaker or the like.
3] Set switch (7) to the ON (1) position. When
current is sent to the output terminals, start
timer terminals will be short‑circuited and the
timer will start.

10 CSU600A/AT ZP-BF05E BF0217CE
4 SPECIFICATIONS
4Specifications
Specifications CSU600A/AT
Specifications are valid at nominal input voltage and an ambient
temperature of +25°C, (77°F). Specifications are subject to change
without notice.
Environment
Application field The instrument is intended for use
in high-voltage substations and
industrial environments.
Temperature
Operating 0°C to +50°C (32°F to +122°F)
Storage & trans-
port
-40°C to +70°C (-40°F to +158°F)
Humidity 5% – 95% RH, non-condensing
CE-marking
LVD Low Voltage Directive 73/23/ EEC
am. by 93/68/EEC
EMC EMC Directive 89/336/EEC am. by
91/263/EEC, 92/31/EEC and 93/68/
EEC
General
Mains voltage 115 or 230 V AC, 50/ 60 Hz
Power consumption (max) 115 V, 667 VA cont. (interm. 3738
VA)
230 V, 851 VA cont. (interm. 6440
VA)
Protection Thermal cut-outs and miniature
circuit breakers
Dimensions
Instrument 356 x 203 x 241 mm
(14.0” x 8.0” x 9.5”)
Transport case 610 x 290 x 360 mm
(24.0” x 11.4” x 14.2”)
Weight 21.9 kg (48 lbs)
38.3 kg (84.4 lbs) with accessories
and carrying case
Current cables 2 x 5 m (16 ft), 50 mm²
Measurement section
Output for external am-
meter
600/6A
Inaccuracy ±0.5%
Timer (only CSU600AT)
Range 0-999.999 s
Resolution 1 ms
Inaccuracy ±0.02% of shown value + 0 to 2 ms
Other Output for starting external timer
Outputs, AC, intermittent output 1) (CAT I)
115 V mains voltage 230 V mains voltage
Current Load time Minimum
output
voltage
Load time Mini-
mum
output
voltage
0 A Cont. 6.0 V Cont. 9.5 V
75 A – – Cont. 9.3 V
100 A Cont 5.6 V 1 h 9.0 V
200 A 15 min 5.3 V 5 min 8.5 V
300 A 1.5 min 4.9 V 2 min 8.0 V
400 A 1 min 4.6 V 1 min 7.5 V
500 A 20 s 4.2 V 30 s 7.0 V
600 A 15 s 3.9 V 20 s 6.5 V
1) Maximum load time from cold state 25°C (77°F). Not valid for repeated tests.
Maximum cable lengths at 600 A
115 V mains 2 x 5 m (16 ft), 70 mm²
230 V mains 2 x 5 m (16 ft), 50 mm²
2 x 10 m (33 ft), 70 mm²
2 x 15 m (49 ft), 95 mm²