Broyce Control Ltd., Pool Street, Wolverhampton, West Midlands WV2 4HN. England
Tel: +44 (0) 1902 773746 Fax: +44 (0) 1902 420639 Email: [email protected] Web: www.broycecontrol.com
The information provided in this literature is believed to be accurate (subject to change without prior notice); however, use of such information shall be entirely at the user’s own risk
.
P9690-3-A
6
6
6
6
012375
•
ADDITONAL MEASUREMENTS
With the 4-way connector wired and plugged in to the rear of the P9690, voltage
and current present, it will be possible to measure and display the following
information.
1. VOLTAGE MEASUREMENTS
PHASE TO NEUTRAL OR PHASE TO PHASE
The frequency measurement ”f” is derived from L1 and will therefore only appear
on the LCD if L1 is present and the voltage is >12V phase to neutral.
•
Quickly press the
button and the following will appear on the LCD
which provides the phase to neutral measurements of the phases connected.
The system measured frequency is also displayed.
Screen example showing the phase to neutral voltages and frequency
•
Press the same button again to display the measured phase to phase voltages.
Screen example showing the phase to phase voltages and frequency
2. POWER
The actual power displayed will also be dependant on the selected Toroid ratio’s.
See examples on the right.
•
After viewing the phase to phase voltages, pressing the same button again
displays the calculated power for each phase.
3. POWER FACTOR
By default, the displayed Power Factor will be 1.00.
•
After viewing the calculated power, pressing the same button again displays
the calculated power factor for each phase.
4. HOURS RUN
This will run for as long as power is applied to the relay.
The displayed time cannot be reset.
The displayed time will be retained in memory during removal of power to the
relay.
•
After viewing the calculated power factor, pressing the same button again
displays the hours run.
•
Pressing the same button again will revert back to display the measured phase
currents.
Notes
If alterations to the User Settings are required whilst in one of the above screens, it
will be necessary to exit first by pressing the
briefly.
5. FAULT CONDITION
•
If any of the examples shown on the left appear on the LCD, it will be exited
automatically should a fault occur which initiates an Overcurrent or Earth fault
time out.
•
The LCD will then revert to displaying which phase is at fault or whether the
fault exists on the neutral. See “Tripping Modes” on the previous page.
6. EXAMPLES
The following examples show the expected measured information based on the
voltage and currents present at the inputs. Trip settings are not taken in to account
in the examples.
Example. 1
VL1/L2/L3 = 228V, IL1/L2/L3 = 6.35A, f = 50Hz, CT ratio = 5:5
Example. 2
VL1/L2/L3 = 250V, IL1/L2/L3 = 1500A
1
, f = 50Hz, CT ratio = 2000:5
1
Current on the primary side of the externally connected 2000A CT’s
V
L1/N
230.0
V
V
L2/N
230.0
V
V
L3
/N
230.0
V
f
50.00
Hz
V
L1
400.0
V
V
L2
400.0
V
V
L3
400.0
V
f
50.00
Hz
P
L1/N
0.0
W
P
L2/N
0.0
W
P
L3/N
0.0
W
pf
L1/N
1.00
pf
L2/N
1.00
pf
L3/N
1.00
HOURS RUN
00000h 00m
V
L1/N
228.0
V
V
L2/N
228.0
V
V
L3
/N
228.0
V
f
50.00
Hz
V
L1
395.0
V
V
L2
395.0
V
V
L3
395.0
V
f
50.00
Hz
P
L1/N
1.4
kW
P
L2/N
1.4
kW
P
L3/N
1.4
kW
pf
L1/N
1.00
pf
L2/N
1.00
pf
L3/N
1.00
V
L1/N
250.0
V
V
L2/N
250.0
V
V
L3
/N
250.0
V
f
50.00
Hz
V
L1
433.0
V
V
L2
433.0
V
V
L3
433.0
V
f
50.00
Hz
P
L1/N
375.0
kW
P
L2/N
375.0
kW
P
L3/N
375.0
kW
pf
L1/N
1.00
pf
L2/N
1.00
pf
L3/N
1.00
