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
.
P9625-2-A
1
1
1
1
XXXXXX
P
Type: P9625
Type: P9625
Type: P9625
Type: P9625
Definite Time (DT)
Definite Time (DT)
Definite Time (DT)
Definite Time (DT) Overcurrent
Overcurrent
Overcurrent
Overcurrent Relay
Relay
Relay
Relay
True R.M.S. measurements
Individual Trip Level adjustment for each phase
Adjustable Delay setting
Test and Reset button for simulating and clearing of fault condition
Red LED indication of which phase has been triggered
Red LED indication of actual tripped condition
Green LED indication for Auxiliary power supply presence
Microprocessor based (self checking) with non-volatile memory
Terminals suitable for 2 x 2.5mm
2
wires (complete with protective cover)
•
GENERAL OVERVIEW
The P9625 (from the P9600 series family of IDMT/DT relays) is a microprocessor based relay
designed to monitor and detect Overcurrents in 3-phase applications. Typically the P9625 is
wired in conjunction with external current transformers (1 per phase) of the feeder to be
protected.
The adjustments and indicators are laid out such to help the user during set-up and fault
finding. The adjustment for the L
LL
L1 (R)
1 (R)
1 (R)
1 (R) for example has its corresponding red LED positioned
above it so it is clear as to which phase this LED relates to. Adjustment and LED operation is
explained further on the next page.
The adjustment for the Delay
Delay
Delay
Delay is a global adjustment that is connected with any one phase that
exceeds the set threshold and delays the relay from energising.
A Test mode is provided (also accessible with the tamperproof transparent cover closed) to
confirm the correct operation of the internal relay. The relay will energise when the
“TEST”
button is pressed and de-energise when the
“RESET”
button is pressed.
•
OPERATION
When an Overcurrent occurs in one of the phases and the level of
current exceeds the trip threshold, the corresponding red LED above
the adjustment illuminates. The time out then commences and the
relay energises after the delay has run. The red “Trip”
“Trip”
“Trip”
“Trip” LED will then
flash indicating a tripped condition.
If the fault current has been removed, pressing the
“RESET”
button
will return the relay back to normal operation. The red LED’s will then
extinguish.
In the event of an Overcurrent condition, the basic sequence of
events is shown below.
•
PRESENTATION
1.
“Phase”
trip adjustment* 5.
“Trip”
red LED indication
2.
“Phase”
trip level exceeded red LED indication 6.
“TEST”
button
3.
“Power supply”
green LED indication 7.
“RESET”
button
4.
“Delay”
adjustment*
* accessible only when the front cover is open
START
OVERCURRENT
occurs
Corresponding
LED illuminates
Time out
commences
Timeout
complete?
N
Y
TRIP!
Dims:
W x H. 96 x 96mm (front)
W x H. 89.5 x 89.5mm (main body)
L. 107mm
