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Primary Current Injection Test System: Oden at

The document describes the ODEN AT Primary Current Injection Test System, which can be used to test circuit breakers, current transformers, ground grids, and more. It has a modular design that allows configuration for different output currents and sizes. It displays measurements of current, voltage, time and other values. Tests include turns ratio testing of current transformers, polarity testing, heat runs, and testing of automatic reclosers and sectionalizers.

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0% found this document useful (0 votes)
515 views7 pages

Primary Current Injection Test System: Oden at

The document describes the ODEN AT Primary Current Injection Test System, which can be used to test circuit breakers, current transformers, ground grids, and more. It has a modular design that allows configuration for different output currents and sizes. It displays measurements of current, voltage, time and other values. Tests include turns ratio testing of current transformers, polarity testing, heat runs, and testing of automatic reclosers and sectionalizers.

Uploaded by

vladaems
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
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ODEN AT

Primary Current Injection Test System

ODEN AT
Primary Current Injection Test System
▪▪Most Advanced Primary Current Injection
Test System to simplify all types of
switchgear and CT commissioning, ground
grid, circuit breaker testing and more

▪▪Modular design to permit optimal


user configuration of output current
vs. unit size

▪▪Compact transport cart facilitates


portability into switchgear rooms
with limited space

▪▪Unique I/30 function allows the current to


be pre-set using low current to prevent
test sample heating, thus eliminating
corruption of test result

Description ▪▪ Testing current transformers


This powerful test system is designed for primary injection testing For turns ratio testing, the primary current and either the second-
of protective relay equipment and circuit breakers. It is also used ary current or the turns ratio are displayed simultaneously. Since
to test the turns ratio of current transformers and for other ap- the turns ratio is displayed directly as the nominal value (1000/5
plications that require high variable currents. for example), no further calculation is needed. Burden of second-
ary circuits can be measured and presented in VA.
The system consists of a control unit together with one, two or
three current units. There are three versions of the current unit: S, ▪▪ Polarity testing
X and H. The S and X current units are identical except that the X The currents phase displacement is shown, and the polarities of
unit has an additional 30/60 V output. The H unit is rated for even the outputs are clearly marked.
higher current. This makes it possible to configure an ODEN AT
system in a suitable way. All parts are portable, and ODEN AT can ▪▪ Heat runs
be quickly assembled and connected. Oden AT is ideal for performing heat runs. Current can be applied
continuously or through programmable intervals. The times can
The control unit has many advanced features – a powerful mea-
be shown in minutes and hours which facilitates long-term testing
surement section for example, that can display turns ratio as well
capability.
as time, voltage and current. A second measurement channel can
be used to test an additional current or voltage. Current transform- ▪▪ Automatic reclosers and sectionalizers
er turns ratio, impedance, resistance, power, power factor (cos φ) Oden AT can also be set to test circuit breakers with reclosing
and phase angle are calculated and shown in the display. Current relays. Operating limits, partial times, total times and the number
and voltage can be presented as percentages of nominal value. The of operations before lockout can be measured. User-selectable
fast-acting hold function freezes short-duration readings on the reclosing sequences can be programmed for testing sectionalizers.
digital display when the voltage or contact signal arrives at the stop
input, the object under test interrupts the current or injection is ▪▪ Testing integrity of ground grids and safety-ground
stopped devices
One way to test ground grids is by injecting current between a
Application
reference ground and the ground to be tested and measuring the
▪▪ Primary current injection testing and breaker testing voltage drop and the percentage of current flowing through the
These tests require high currents and the ability to measure very ground grid. The type X current unit included with Oden AT is
short duration, current flow. Oden AT has been designed espe- designed for this type of application. Personal safety grounds must
cially to meet these needs. No extra contacts are needed to mea- be tested at rated current, a task for which Oden AT is well suited.
sure the operating time of a low-voltage breaker. Testing stops at
the instant when the main breaker contacts open to interrupt the
current. Output current initiation is synchronized with the currents
zero-crossover point to ensure good repeatability and minimized
DC offset.
ODEN AT
Primary Current Injection Test System

Features and Benefits


1. Display. The display presents time, output current, voltage, 11. Injection. Starts current injection and timing.
current shown on ammeter 2 and phase angle. You can scroll 12. Momentary Injection. When this button is used, injection
through entities Z, P, Q, R, X, S, power factor (cos φ) and I continues only as long as it is pressed. Useful in order to avoid
max. for example overheating.
2. Miniature circuit breaker used for current output. 13. RS232 for computer. ODEN AT is equipped with a serial
Interrupts output current. Can also be actuated manually for port for communication with PC (for transfer of test data for
safe disconnection of load. example).
3. Current reduction button. Used during setting to reduce the 14. Manual shut-off. Injection and timing are stopped when this
output current to 1/30. Useful in order to avoid for example button is pressed.
unintentional tripping and overheating.
15. Automatic injection stop. Generation stops after a user-
4. Fine adjustment knob. Knob for fine adjustment of current specified interval or when condition at the input is met. The
and +/- buttons for coarse adjustment. diodes show the selected OFF condition.
5. Indicator lamps. Indicate whether ammeter 2 or the voltmeter 16. Stop-condition indicator. Indicates that a contact connected
is enabled. to the input is closed or if voltage is present.
6. Input for voltmeter. Used to measure voltage and for 17. Status indicator. Indicates if a contact connected to the input
microhmmeter measurement. is closed or if voltage is present.
7. Input for ammeter 2. Used to measure current in an external 18. Stop input. Used to freeze a reading or stop injection.
circuit (in a current transformer´s secondary winding for Activated when current is interrupted by the object being
example). tested, when an external contact is actuated or when a voltage
8. Hold function. This function freezes readings on the display. is applied or removed.
9. Selection/setting (CHANGE) knob. Selects the desired
menu option (shown in the display window). Also used to
change numerical values.
10. Setting buttons. Personnel unfamiliar with ODEN AT can
use the pre-defined settings very effectively, while experienced
users can make their own basic settings.
• Ammeter. Used to set the main current-output ammeter. You
can select the desired range or select autoranging.
• V/A Meter. Toggles between the voltmeter and ammeter 2.
Also used to select the desired range or select autoranging.
• System. Used for general settings.
• Memory. Used to save or recall settings to or from the ten
ODEN AT memories. One of these memories contains the
default (pre-defined) settings that are invoked when ODEN AT
is powered up.
• Application. Used to invoke the desired measurement mode:
automatic recloser, sectionalizer or microhmmeter.
ODEN AT can also be set to generate pulse trains with user-
selectable pulse and pause times.

1 2 3 4 5 6 7

8 9 10 11 12 13 14 15 16 17 18

2
ODEN AT
Primary Current Injection Test System

Specifications ODEN AT
Specifications are valid at nominal input voltage and an ambient Measurement section
temperature of +25°C, (77°F). Specifications are subject to change Ammeters
without notice.
Measurement method AC, true RMS
System designation Inaccuracy 1% of range ±1 digit
An ODEN AT-system consists of a control unit and one, two or
three current units. There are three different versions of the current
Ammeter 1
units: S-unit (standard), X-unit (extra 30/60 V outlet) and H-unit Ranges 0 – 4800 A / 0 –15 kA▪
(high current). The system designation indicates the number and 0 – 9600 A / 0 – 30 kA▪
version of current units included. 0 – 960 A / 0 – 3 kA
Example: ODEN AT/2X▪ Ammeter 2
2 = Number of current units▪ Ranges 0 – 2.000 A / 0 – 20.00 A
X = Version of current unit (S, X or H) Maximum current 20 A (The input is not protected by
Environment a fuse)
Application field The instrument is intended for use Voltmeter
in high-voltage substations and Measurement method AC, true RMS
industrial environments. Ranges 0 – 0.2 V, 0 – 2 V, 0 – 20 V,▪
Temperature 0 – 200 V, AUTO
Operating 0°C to +50°C (+32°F to +122°F) Inaccuracy 1% of range ±1 digit
Storage & transport -25°C to +55°C (-13°F to +127°F) Input resistance (Rin) 240 kΩ (range 0 – 200 V)▪
Humidity 5% – 95% RH, non-condensing 24 kΩ (other ranges)
CE-marking Dielectric withstand 2.5 kV
LVD 2006/95/EC Timer
EMC 2004/108/EC Presentation In seconds, mains frequency cycles
or hours and minutes
General
Ranges 0.000 – 999.9 s▪
Mains voltage 240 / 400 V AC, 50 / 60 Hz▪
0 – 9999 cycles▪
480 V AC / 60 Hz
0.001 s – 99 h 59 min
Mains inlet IEC 60309-2, 63 A
Inaccuracy ±(1 digit + 0.01% of value) ▪
Input current Output current x open circuit voltage For the stop condition in INT-mode
/ input voltage 1 ms shall be added to the specified
Protection The output transformer has a built-in measurement error.
thermal cut-out, and the primary Stop input
side is protected by a miniature
circuit breaker. Max. input voltage 250 V AC / 275 V DC
Dimensions Phase angle
Control unit AT 570 x 310 x 230 mm ▪ Range 0 – 359º
(22.4” x 12.2” x 9”) Resolution 1º
Current unit S, X H 570 x 310 x 155 mm ▪ Inaccuracy ±2º (for voltage and current readings
(22.4” x 12.2” x 6”) that are higher than 10% of the
Complete with cart 690 x 350 x 860 mm ▪ selected range)
(27.2” x 13.8” x 33.9”) Z, P, R, X, S, Q and power factor (cos φ)
Weight For these measurements the result is calculated using U, I and
Control unit AT 25 kg (55 lbs) sometimes φ.
Current unit S 42 kg (92.6 lbs) Imax
Current unit X 45 kg (99.3 lbs) Stores highest current value that exists ≥100 ms
Current unit H 49 kg (108 lbs) INT-level
Cart 11 kg (24.3 lbs) Threshold indicating that current is interrupted. Can be set to
Display LCD 0.7% or 2.1% of Ammeter 1 range.
Available languages English, German, French, Spanish,
Swedish.

3
ODEN AT
Primary Current Injection Test System

Outputs
ODEN AT, 240 V mains voltage, 50 / 60 Hz ODEN AT, 400 V mains voltage, 50 / 60 Hz
Open Max. con- Max. cur- Max. Open Max. con- Max. cur- Max.
circuit tinuous rent, 3 mi- current, circuit tinuous rent, 3 mi- current,
voltage current 3) nutes 3) 1 sec 3) voltage current 3) nutes3) 1 sec3)
ODEN AT/1S ODEN AT/1S
6V 1000 A 2000 A 7000 A 6V 1000 A 2000 A 7000 A
ODEN AT/2S ODEN AT/2S
1) 6V 1680 A 3600 A 8000 A 1) 6V 1900 A 4000 A 13 kA
2) 12 V 1000 A 2000 A 4000 A 2) 12 V 900 A 2000 A 6000 A
ODEN AT/3S ODEN AT/3S
1) 6V 2500 A 5200 A 8000 A 1) 6V 1900 A 4000 A 13 kA
2) 18 V 840 A 1700 A 2600 A 2) 18 V 600 A 1400 A 4400 A
ODEN AT/1X ODEN AT/1X
High cur- 6V 1000 A 2000 A 7000 A High cur- 6V 1000 A 2000 A 7000 A
rent output rent output
Output 0 – 30/60 V Output 0 – 30/60 V
30 V range 30 V 160 A 300 A 1200 A 30 V range 30 V 160 A 300 A 1200 A
60 V range 60 V 80 A 150 A 600 A 60 V range 60 V 80 A 150 A 600 A

ODEN AT/2X ODEN AT/2X


High cur- 1) 6V 1900 A 4000 A 13 kA
High cur- 1) 6V 1680 A 3600 A 8000 A
rent output 2) 12 V 900 A 2000 A 6000 A
rent output 2) 12 V 1000 A 2000 A 4000 A
Output 0 – 30/60 V
Output 0 – 30/60 V
30 V range 1) 30 V 320 A 600 A 2500 A
30 V range 1) 30 V 320 A 600 A 1600 A
30 V range 2) 60 V 160 A 300 A 1200 A
30 V range 2) 60 V 160 A 300 A 800 A
60 V range 2) 120 V 80 A 150 A 600 A
60 V range 2) 120 V 80 A 150 A 400 A
ODEN AT/3X
ODEN AT/3X
High cur- 1) 6V 1900 A 4000 A 13 kA
High cur- 1) 6V 2500 A 5200 A 8000 A
rent output 2) 18 V 600 A 1400 A 4400 A
rent output 2) 18 V 840 A 1700 A 2600 A
Output 0 – 30/60 V
Output 0 – 30/60 V
30 V range 1) 30 V 380 A 850 A 2600 A
30 V range 1) 30 V 480 A 900 A 1600 A
30 V range 2) 90 V 120 A 290 A 880 A
30 V range 2) 90 V 160 A 300 A 520 A
60 V range 2) 180 V 60 A 145 A 440 A
60 V range 2) 180 V 80 A 150 A 260 A
ODEN AT/1H
ODEN AT/1H
3.6 V 1250 A 2600 A 11 kA
3.6 V 1250 A 2600 A 11 kA ODEN AT/2H
ODEN AT/2H 1) 3.6 V 2500 A 5300 A 21 kA
1) 3.6 V 2500 A 5500 A 13 kA 2) 7.2 V 1250 A 2500 A 10.9 kA
2) 7.2 V 1250 A 2800 A 6500 A ODEN AT/3H
ODEN AT/3H 1) 3.6 V 3800 A 7700 A 21.9 kA
1) 3.6 V 3800 A 8000 A 13 kA 2) 10.7 V 1250 A 2600 A 7200 A
2) 10.7 V 1250 A 2800 A 4300 A

4
ODEN AT
Primary Current Injection Test System

ODEN AT, 480 V mains voltage, 60 Hz High current output - ODEN AT systems for 240 V, 50 Hz
Open Max. con- Max. cur- Max.
circuit tinuous rent, 3 mi- current,
voltage current 3) nutes 3) 1 sec 3)
ODEN AT/1S

Output voltage* (V)


7.2 V 1000 A 2000 A 7000 A
ODEN AT/2S
1) 7.2 V 1900 A 4000 A 13 kA
2) 14.4 V 900 A 2000 A 6000 A
ODEN AT/3S
1) 7.2 V 1900 A 4000 A 13 kA
2) 21.6 V 600 A 1400 A 4400 A
ODEN AT/1X
High cur- 7.2 V 1000 A 2000 A 7000 A
rent output Current (kA)
Output 0 – 30/60 V
30 V range 36 V 160 A 300 A 1200 A
60 V range 72 V 80 A 150 A 600 A High current output - ODEN AT systems for 400 V, 50 Hz
ODEN AT/2X
High cur- 1) 7.2 V 1900 A 4000 A 13 kA
rent output 2) 14.4 V 900 A 2000 A 6000 A
Output 0 – 30/60 V
Output voltage* (V)

30 V range 1) 36 V 320 A 600 A 2500 A


60 V range 1) 272 V 160 A 300 A 1200 A
60 V range 2) 144 V 80 A 150 A 600 A
ODEN AT/3X
High cur- 1) 7.2 V 1900 A 4000 A 13 kA
rent output 2) 21.6 V 600 A 1400 A 4400 A
Output 0 – 30/60 V
30 V range 1) 36 V 380 A 850 A 2600 A
30 V range 2) 108 V 120 A 290 A 880 A
60 V range 2) 216 V 60 A 145 A 440 A Current (kA)
ODEN AT/1H
4.3 V 1250 A 2600 A 11 kA
ODEN AT/2H High current output - ODEN AT systems for 480 V, 60 Hz
1) 4.3 V 2500 A 5300 A 21 kA
2) 8.7 V 1250 A 2500 A 10.9 kA
ODEN AT/3H
1) 4.3 V 3800 A 7700 A 21.9 kA
2) 13.0 V 1250 A 2600 A 7200 A
Output voltage* (V)

1) Current units connected in parallel


2) Current units connected in series
3) Maximum possible current is also limited by the impedance in the test circuit. The
current value can not exceed output voltage / impedance value.

Current (kA)

S or X units
H units
p = units in parallel, s = units in series
*) Voltage between output terminals

5
ODEN AT
Primary Current Injection Test System

Optional accessories

HCP2000 — High Current Probe


The high current probe, HCP2000, is a tool that makes
it possible to test Molded Case Circuit Breakers (MCCB), without
removing/uninstalling the circuit breaker. The High current serial bar
high current probe operates up to 2000 A For serial connecting of ODEN current units.
trip current.

Current transformer switchbox


The Current Transformer (CT) Switchbox for ODEN AT is
a tool that is used to facilitate CT testing. The secondary wind-
ings on the CT are connected to the CT Switchbox inputs and
the CT Switchbox output is connected to ODEN AT Ammeter 2 Multi-cable high current cable sets
terminals. The switch on the CT Switchbox is used to select which Low-impedance multi-cable sets for higher output current. Avail-
secondary winding on the CT that should be measured. The wind- able with 2, 3, 4 or 6 parallel cables, and in lengths of 0.5, 1.0, 1.5
ings that aren’t measured are short-circuited. The CT Switchbox or 2 meters.
can handle up to 5 secondary windings.
Cable sets
See Ordering Information.

Input power adapter 240/400V


Used to run a 400 V ODEN AT at 240 V. Can only be used to-
gether with an ODEN AT.

6
ODEN AT
Primary Current Injection Test System

Ordering information
Item Art.No. Item Art.No.
A cart (Art.No. 50-00092) is always included with Optional accessories
purchase of a complete ODEN system. The cable HCP2000 AA-90165
set(s) for connection to the object under test must
Current Transformer Switchbox BH-90130
however be stated as a separate item in the order.
Cable for connecting current units in series is High Current Serial Bar BH-90102
included with purchase of a current unit. Mains Adapter 240/400V
ODEN AT/1S Note: Can only be used together with an ODEN AT
prepared for this feature. Contact Programma. BH-90120
240 V Mains voltage BH-62411
ODEN-Select
400 V Mains voltage BH-64011 Software tool for finding the best ODEN AT con-
480 V (60 Hz) Mains voltage BH-64811 figuration. Free-ware, can be downloaded from
ODEN AT/2S the Programma web site.
240 V Mains voltage BH-62412 Multi-cable high current cable sets
400 V Mains voltage BH-64012 Length Impedance
480 V (60 Hz) Mains voltage BH-64812 (Twisted-pair cables)
ODEN AT/3S Cross section area: 240 mm2 (2x120)
240 V Mains voltage BH-62413 2 x 0.5 m (1.6 ft) 0.21 mΩ GA-12205
400 V Mains voltage BH-64013 2 x 1 m (3.3 ft) 0.32 mΩ GA-12210
480 V (60 Hz) Mains voltage BH-64813 2 x 1.5 m (4.9 ft) 0.42 mΩ GA-12215
ODEN AT/1X 2 x 2 m (6.6 ft) 0.53 mΩ GA-12220
240 V Mains voltage BH-62421 Cross section area: 360 mm2 (3x120)
400 V Mains voltage BH-64021 2 x 0.5 m (1.6 ft) 0.18 mΩ GA-12305
480 V (60 Hz) Mains voltage BH-64821 2 x 1 m (3.3 ft) 0.25 mΩ GA-12310
ODEN AT/2X 2 x 1.5 m (4.9 ft) 0.32 mΩ GA-12315
2 x 2 m (6.6 ft) 0.39 mΩ GA-12320
240 V Mains voltage BH-62422
Cross section area: 480 mm2 (4x120)
400 V Mains voltage BH-64022
2 x 0.5 m (1.6 ft) 0.16 mΩ GA-12405
480 V (60 Hz) Mains voltage BH-64822
2 x 1 m (3.3 ft) 0.21 mΩ GA-12410
ODEN AT/3X
2 x 1.5 m (4.9 ft) 0.27 mΩ GA-12415
240 V Mains voltage BH-62423
2 x 2 m (6.6 ft) 0.32 mΩ GA-12420
400 V Mains voltage BH-64023
Cross section area: 720 mm2 (6x120)
480 V (60 Hz) Mains voltage BH-64823
2 x 0.5 m (1.6 ft) 0.14 mΩ GA-12605
ODEN AT/1H
2 x 1 m (3.3 ft) 0.18 mΩ GA-12610
240 V Mains voltage BH-62431
2 x 1.5 m (4.9 ft) 0.21 mΩ GA-12615
400 V Mains voltage BH-64031
2 x 2 m (6.56 ft) 0.25 mΩ GA-12620
480 V (60 Hz) Mains voltage BH-64831
Cable set, 2 x 5 m (16 ft), 120 mm2
ODEN AT/2H
Cross section area: 120 mm2
240 V Mains voltage BH-62432 Weight: 15.2 kg (33.5 lbs)▪
400 V Mains voltage BH-64032 Impedance: 2.2 mΩ GA-12052
480 V (60 Hz) Mains voltage BH-64832 Cable set, 2 x 5 m (16 ft), 25 mm2
ODEN AT/3H Cross section area: 25 mm2
240 V Mains voltage BH-62433 For the 30/60 V output of current unit X. ▪
Weight: 4 kg (8.8 lbs) GA-02052
400 V Mains voltage BH-64033
480 V (60 Hz) Mains voltage BH-64833

SWEDEN UK Other Technical Sales Offices Registered to ISO 9001 and 14001
Megger Sweden AB Archcliffe Road Dover Dallas USA, Norristown USA, Subject to change without notice.
Eldarvägen 4, Box 2970 CT17 9EN England Toronto CANADA, Trappes FRANCE, Art.No. ZI-BH02E • Doc. BH0456BE • 2010
SE-187 29 TÄBY T +44 (0) 1304 502101 Oberursel GERMANY, Johannesburg ODEN-AT_DS_en_V03
T +46 8 510 195 00 F +44 (0) 1304 207342 SOUTH AFRICA, Kingdom of BAHRAIN www.megger.com
F +46 8 510 195 95 Mumbai INDIA, Chonburi THAILAND Megger is a registered trademark

E seinfo@megger.com Sydney AUSTRALIA

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