Megger Programma Sverker 760 User Manual

48
SVERKER 750/760
Programma Electric AB
ZP-CD01E R05A
5. Connect together the terminals marked
with black dots on the 0-250 V output and
on the AC voltage source. From this junc-
tion, make a connection to one side of the
relay’s voltage input.
6. Connect the left-hand socket terminal on
the 250 V output to the upper left-hand
socket terminal on the make/break contact
(the one that performs a break function).
7. Connect the left-hand output socket termi-
nal on the AC voltage source to the upper
right-hand socket terminal on the make/
break contact (the one that performs a
make function).
8. Connect the lower left-hand socket terminal
on the make/break contact to the other
side of the relay voltage input.
9. Make certain that the relay tripping output
is properly connected to Sverker.
10. Activate ON using the start switch, where-
upon the pre-fault voltage will be applied to
the relay.
11. Turn on the AC voltage source.
12. Activate OFF+TIME using the start switch,
whereupon fault voltage will be applied to
the relay and timing will start.
13. Read the time at which the relay operated.
6.15 Changing the
current and voltage
phase difference
Sverker 750
Using the built-in capacitor and set of resistors, you
can change the phase difference between current
and voltage. You can connect the phase-changing
components at either the current output or voltage
output.
TIP!
It is easiest to change the phase angle of
the entity (current or voltage) having the
lowest power.
The capacitor can be connected in series
with the current output if the current is not
excessively high. This provides almost a
90° phase displacement of the current.
The phase angle is determined by the
phase-changing components and the load.
Since changing the phase angle also
causes the current/voltage to change, you
must first adjust the phase angle and then
set the current/voltage.
If possible, use the ammeter’s external
panel input to measure the phase angle
since this will provide better accuracy and
lower currents.
Sverker760
1. Connect the AC voltage output (22) to the
voltmeter.
Note! Connect the output marked with the
"black dot" to the black input on the
voltmeter.
2. Select ϕ (°, Iref) or ϕ (°, Uref), see section
5.9 Extra measurement.
3. Set the amplitude of the AC voltage with
the knob (23).
4. Generate a low current to make it possible
to measure the phase angle.
5. Set the phase-angle by using the knobs
(43) and (44).

Megger Programma Sverker 760 Specifications

General

Brand	Megger
Model	Programma Sverker 760
Category	Test Equipment
Language	English