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With its ease of configuration and its comprehensive range of facilities, including a variable-frequency voltage source with a continuous phase-shift function, Megger's self-contained Sverker 780 relay test set is an invaluable 'toolbox' for protection engineers, which is capable of testing almost any type of single-phase protection relay conveniently and efficiently.
You can also test directional protective equipment efficiantly by means of the built-in variable voltage source. In Megger SVERKER780 this has a continuous phase shift function and adjustable frequency as well. Automatic reclosing devices can also be tested - just as easily.
Designed to comply with EU standards and other personal and operational safety standards, the SVERKER780 is also equipped with a serial port for communication with personal computers and the PC software SVERKER Win.
Sverker780 Extra Features:
Plotting excitation curves.
Current and voltage transformer ratio tests.
Burden measurement for protective relay test equipment.
Impedance measurement.
Efficiency tests.
Polarity (direction) tests.
Injection: Maintained, Momentary & Max. time.
Filtering: When filtering is selected, five successive readings are averaged.
Off delay: The turning off of generation can be delayed after tripping.
Megger Sverker780 Specifications
Current Outputs - AC
Range
No-Load voltage (min)
Full-Load Voltage (min)
Full-Load Current (max)
Load/Unload Times On (max) / Off (min)
0-10 A
90 V
75 V
10 A
2/ 15 minutes
0-40 A
25 V
20 V
40 A
1/ 15 minutes
0-100 A
10 V
8 V
100 A
1/ 15 minutes
0-100 A
10 V
-
250 A*
200 A**
1 sec/ 5 minutes
* Mains voltage 230 V AC
** Mains voltage 115 V AC
Voltage Outputs - AC/DC
Range
No-Load Voltage (min)
Full-Load Voltage (min)
Full-Load Current (max)
Load/Unload Times On (max) / Off (min)
0-250 V AC
290 V AC
250 V AC
3 A
10 min/ 45 min
0-300 V DC
320 V DC
250 V DC
2 A
10 min / 45 min
Separate AC Voltage Source (SVERKER 780)
Range
No-Load Voltage (min)
Full-Load Voltage (min)
Full-Load Power (max)
5-220 V AC, minimim step 0.1 V
240 V AC
220 V AC at 33 W
200 V AC at 46 W
33 W continuously.
46 W 1 minute
Phase Angle
0 to 359°.
Resolution
1°.
Inaccuracy
+2°.
Frequency
15 to 550 Hz.
Resolution
1 mHz.
Inaccuracy
+0.1%.
Auxiliary DC Output
Range
Voltage
Max Current
20 to 130 V
20 V
130 V DC
300 mA
375 mA
130 to 220 V DC
130 V
220 V DC
325 mA
400 mA
Environment
Application Field
This instrument is intended for use in HV substations and industrial environments.
Operating Temperature
0 to +50°C (32 to +122°F).
Storage/Transport Temperature
-40 to +70°C (-40 to +158°F).
Humidity
5 to 95% RH non-condensing.
CE-Marking
LVD
Low voltage directive 2006/95/EC.
EMC
EMC directive 2004/108/EC.
General Specifications
Mains Voltage
115/230 V AC, 50/60 Hz.
Power Consumption (Max)
1380 W.
Protection
Thermal Cutouts, automatic overload protection.
Display
LCD.
Languages
Bulgarian, Czech, English, French, German, Russian, Spanish, Swedish and Turkish.
Dimensions (Instrument)
250 x 270 x 220 mm (13.8 x 10.6 x 8.7").
Dimensions (Transport Case)
610 x 350 x 275 mm (24.0 x 13.8 x 10.8").
Weight
17.6 kg (38.1lbs)
26.3 kg (58lbs) with accessories + case.
Sverker 780 warranty
1 year.
Ammeter
Measurement Method
AC, true RMS
DC, mean value.
Ranges
Internal
0.00 to 250.0 A.
External
0.000 to 6.000 A.
Inaccuracy (Internal Range)
0-10 A AC
+(1% + 20 mA).
0-40 A AC
+(1% + 40 mA).
0-100 A AC
+(1% + 200 mA).
Inaccuracy (External Range)
0-0.6 A AC
+(1% + 20 mA).
0-6 A AC
+(1% + 20 mA).
0-0.6 A DC
+(0.5% + 2 mA).
0-6 A DC
+(0.5% + 20 mA).
Resolution
Internal Range
10 mA (range <100 A)
100 mA (range >100 A).
External Range
1 mA.
Voltmeter
Measurement Method
AC, true RMS.
Range
0.00 to 600.0 V.
Inaccuracy
AC, +(1% + 200 mV) Max value
DC +(0.5% + 200 mV) Max value
Values are range dependant.
Power Factor and Phase Angle Measurements
Range
Resolution
Inaccuracy
Power Factor cos ?
-0.99 (cap) to +0.99 (ind)
0.01
+0.04
Phase Angle cos ? (°)
000 - 359°
1°
+2°
Impedance/Power Measurements
AC
Z (Ω and °), Z (Ω), R and X (Ω and Ω), P (W), S (VA), Q (VAR).
DC
R (Ω), P (W).
Range
Up to 999 kΩ (X=unit).
Make/Break Contact
Max Current
1 A.
Max Voltage
250 V AC or 120 V DC.
Reclosing Test
Items Measured
Tripping and reclosing times.
Display
After test is finished a list of all times appears in the display.
Break State Feedback
The make/break contact can be used to feed back the breaker state.
Max Number of Reclosings
49.
Max Testing Time
999s.
For more information on Megger Sverker780 HD talk to Cuthbertson Laird Group
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