ABB Distribution Protection Unit 1500R
11-4
Maintenance and Testing
9/99
website:www.abb.com/papd
Programmable inputs I1 (52a), I2 (52b) and I3 (43a) must be wired to enable their respective functions and programmed in the
Input Mapping screen. Progammable output OUT 2 (Close) must be wired to enable the respective function and programmed
in the output mapping screen.
Functional Test Mode (Password Protected)
Use the Functional Test Mode to test programmed overcurrent functions and the reclose sequence (upon removal of
test current) without simulating operation of the 52a (XO) and 52b (XI) contact inputs. The DPU1500R stays in
Functional Test Mode for fifteen minutes or until you exit, whichever occurs first. Use the <C> key on the MMI to reset
the recloser when it is in Lockout in the Test Mode. The MMI display shows the time remaining in the Functional Test
Mode (except when the Trip Coil Monitor function has been enabled). The test sequences are written only into the
Operations Record.
Verify Self-Checking Test Via MMI
Follow these steps to verify the pass/fail status of each self-check element on the DPU1500R:
1.
Connect the proper control power to the unit. Wait for initialization to be complete. The green STATUS LED
should be lit and the red RECLOSER OUT LED should also be lit if the recloser is disabled by the active
settings table.
2.
From the MMI, press “E” to get the Main Menu.
3.
Scroll down to “TEST” and press “E.”
4.
The first choice is “Self Test,” so press “E.” All elements under the “Self Test” should read “pass.”
5.
Press “C” to return to the meter display.
Figure 11-1. Typical Test Circuit
Continuous
DC Control
Power Sources
Kx = Latching relay (simulated breaker)
contacts shown in reset condition
(breaker open)
Current Source & Timer
(protective relay test set)
R
R
Reclose Interval
Timer
START
STOP
STOP
STOP
START
TERMINAL
(OPTIONAL)
Manual
Trip S1
Kx
Reset
Kx
Set
Manual
Close S2
Self-Check
Alarm Light
or LED
R
Self-Check
Alarm
Red Lamp or LED
(breaker closed)
Green
Lamp or
LED
(breaker
open)
52
a
Trip
Close
Kx
Any
Current
Input
RS-232
6
5
4
14
1
(+)
25
29
S3
3
15
2
26
30
Kx/(52/a)
Kx
52
b
Kx
52
b
Kx
52
a
Kx
Kx
52
a
Kx
52
b
IN 1
IN 2
IN 3
(COM)
(-)