6 1
S V E R K E R 7 5 0 / 7 6 0
P r o g r a m m a E l e c t r i c A B
Z P - C D 0 1 E R 0 5 A
The following functions are to be tested:
• Pick-up function: P > ON or Q > ON
• Drop-out function : P > OFF or Q > OFF
• Operating time: P > ON + TIME DELAY or Q >
ON + TIME DELAY
• Sensitivity (depends on phase angle)
Make a note of the relay setting data (U, I and time
delay as well as P or Q). If so desired, calculate the
operating/drop-out values that are of interest:
P = U * I * cos
ϕ
or Q = U * I * sin
ϕ
Test hookup and initial settings
1. Connect for testing as shown in the above
diagram.
a.
Connect the Sverker separate 0-120 V
AC voltage source to the protective relay
equipment voltage input.
b.
Connect the Sverker current source to
the protective relay equipment current
input.
c.
Connect the timer stop input (STOP) to
the protective relay equipment trip output.
d.
Also connect the separate 0-120 V AC
voltage source to the voltmeter input.
e.
If low currents are to be measured,
connect the current source to the separate
ammeter panel input.
2. Turn on power to Sverker using the mains
switch.
3. Activate the desired stop condition for the
timer by setting the stop input for a make
and/or break function and for a live or
dead contact.
4. Activate extra measurement of P or Q by
calling up and using a menu on the display
as follows:
MODE -
W
- ’
Ω
,
ϕ
, W, VA...’ - CHG -
W
-
P(W) or Q(VAr) - SEL - ESC, whereupon the
following will be shown on the display:
ms - A - V mW.
5. Select the desired voltage range (0-60 or 60-
120 V) for the separate AC voltage output
by pressing the left button beneath the
output.
6. Activate the AC voltage output by pressing
the right button beneath the output. Then
set the voltage.
7. Move the ammeter test point to the desired
current output or to the separate ammeter
panel input. This can be done step by step
with the A button located to the right of the
display window. When a test point is
selected, its indicator lamp lights.
Pick-up and drop-out functions: P
or Q > ON and P or Q > OFF
1. Turn on the Sverker current source by acti-
vating ON with the start switch (press the
W
key once), whereupon the ON indicator
lamp will light.
2. Increase the current until operation takes
place (P > or Q > ON), whereupon the
Sverker TRIP indicator will glow steadily. If
operation does not take place, reverse the
polarity of the protective relay equipment
voltage circuit.
3. Read the
P > ON or Q > ON
value on the
display (U, I and P or Q).
4. If the freeze function has been activated,
press the HOLD button twice to unfreeze
the value shown.
5. Decrease the current until drop-out occurs (P
> OFF or Q > OFF), whereupon the TRIP
indicator will be extinguished.
6. Read the
P > OFF or Q > OFF
value from the
display window.
7. Decrease the current to 0.
8. Turn off the Sverker current source by
setting the start switch to the OFF position.
Operating times: P > ON + TIME
DELAY or Q > ON + TIME DELAY
1. Turn on the Sverker current source by set-
ting the start switch to the ON position,
whereupon the ON indicator lamp will light.
2. Increase the current to 1.5 x P > ON.
3. Turn off the Sverker current source by
setting the start switch to the OFF position.
4. Activate ON + TIME by means of the start
switch, whereupon the timer will start and
the current source will start to generate
current.
5. When the protective relay equipment oper-
ates, the timer will stop automatically and
the current source will be turned off auto-
matically, whereupon the TRIP indicator will
start to flash.
6. Read the
ON + TIME DELAY
value from the
Sverker display.
Summary of Contents for Programma Sverker 750
Page 1: ...SVERKER 750 760 User s manual Relay Test Unit ...
Page 28: ...2 9 S V E R K E R 7 5 0 7 6 0 P r o g r a m m a E l e c t r i c A B Z P C D 0 1 E R 0 5 A ...
Page 75: ...7 6 S V E R K E R 7 5 0 7 6 0 P r o g r a m m a E l e c t r i c A B Z P C D 0 1 E R 0 5 A ...
Page 76: ...Subject to change without notice Printed matter ZP CD01E R05B 2007 ...