B9300 Power Reference Unit
• Setting of generator capacity via
SELCO load sharers
• Adjustable from 0 to 100%
• DC output (0 - 1V DC, ±1V DC,
0 - 3V DC or 0 - 5V DC)
• Knob for manual control
• Screw lock for knob
• 50 hours burn-in before test
• Ambient temperature range:
-20°C to +70°C
• Flush mounted unit
POWER REF. UNIT
B9300
ON
Application
The B9300 Power Reference Unit is
a
pplied for setting the capacity to be
provided by the engine driven gene-
rator(s) when the generators are
o
perated in parallel with a grid (utility)
or a shaft generator.
The B9300 is used as a complementary
unit to SELCO’s range of load sharers
(Load Sharer type T4300, T4400 and
T4800).
0
10
to half of its original setting. If instability
occurs, the dead band zone should be
increased by increasing the STABILITY
setting on the T4800.
The B9300 Power Reference Unit is for
flush mounting and it has standard
i
nstrument dimensions 96 x 96 x 80mm
(H x W x D).
The load sharer will adjust the power of
an engine driven generator according to
the setting of the knob placed on the
front panel of the Power Reference
Unit. The setting is 0 - 10 (equivalent to
0 - 100 %).
A finger screw is provided for locking
the dial.
The same Power Reference Unit can
also be connected to several load
sharers where a multi engine installa-
t
ion is operating in parallel with a grid
supply.
The output of the B9300 Power
R
eference Unit (terminals 5 and 3) is
connected to the parallel lines of the
load sharer(s) (terminals 12 and 13).
The connection of terminal 5 of the
B9300 Power Reference Unit and
t
erminal 13 on the SELCO T4800 Load
Sharer will disable the frequency
control function in the load sharer. This
is used when running parallel to the
grid (utility) or other frequency
d
etermining power sources.
Please note that the dead band zone in
the T4800 Load Sharer will be reduced
Function
t
iometer Type and B9300 Power
R
eference Unit is available. The unit is
specified E7800-9x. For details, please
refer to the data sheet for the E7800
M
otorized Potentiometer. This data
sheet can be downloaded from our web
site www.selco.com
Example of setting:
Generator rating: 695A at PF 0.8
Active current: 695 x 0.8 = 556A
Current transformer: 800/5
Maximum on dial: 10
Full load on dial: 10 x 556/800 = 6.95
(69.5%)
In order to obtain remote setting of the
power reference function, a combina-
t
ion of Selco’s E7800 Motorized Poten-
Option
BUS
MAINS-SWITCH
BUS
MAINS-SWITCH
GRID
GRID
AUT./MAN.
POWER
REFERENCE
B9300-XX-10
LOAD SHARER
T4400
POWER
REFERENCE
B9300-XX-14
LOAD SHARER
T4800
INCR.
DECR.
MOTOR
SUPPLY
GEN.
1
AUT./MAN.
LOAD SHARER
T4800
LOAD SHARER
T4400
INCR.
DECR.
MOTOR
SUPPLY
GEN.
1
Fig. 1. Application Diagram. B9300 with T4400.
Fig. 2. Application Diagram. B9300 with T4800.
Specifications
B9300 Power Reference Unit
Max. voltage
96mm
480V
90 - 120%
2VA at U
N
0 - 1V DC, ±1V DC, 0 - 3V DC or 0 - 5V DC
-20 to +70°C
CE according to EN50081-1, EN50082-1, EN50081-2,
EN50082-2
50 hours before final test
0.7kg
96 x 96 x 80mm (H x W x D)
92 X 92mm (H x W)
Voltage range
Consumption
DC output
96mm
Operating temperature
EMC
Burn-in
Cut out 92 x 92mm
26
75mm
Weight
Dimensions
Panel cut out
The specifications are subject to change without notice.
Type Selection Table
Fig. 3. Dimensions.
Terminals
Type
B9300.0010
B9300.0030
B9300.0040
B9300.0050
B9300.0060
B9300.0070
B9300.0090
1-2
220-240V
220-240V
220-240V
100-110V
380-450V
380-450V
415-480V
Function
Output 0 - 1V DC
Output 0 - 3V DC, to be used with T4300/T4400-xx
Output 0 - 3V, to be used with T4300/T4400-xx,
max. adjustment from 1.5 - 3V DC
Output 0 - 1V DC
Output 0 - 1V DC
Output ±1V DC
Output 0 - 1V DC
SELCO Worldwide
Other voltages and combinations are available on request.
B9395-72 E
Main office:
SELCO A/S
Betonvej 10
DK-4000 Roskilde
Denmark
Phone: + 45 7026 1122
Fax:
+ 45 7026 2522
e-mail: selco.dk@selco.com
www.selco.com
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