Littelfuse T4000 User Manual
T4000 Auto Synchronizer
GEN.
24
8
OUTPUT TO GOV.
AUTO-SYNCHRONIZER
BUS.
GEN.
C/B
1
BUS
3
L
2
L
1L2 3
SYNC.
ON
4 5 76
ANGLE
PHASE
17 18 19
FORV. INV.
BUS.
2320 21 22
COMM.
CONT.
GEN.
STABILITY
CLOSE ENABLE
Application diagram
C/B NC
9 10 11 12 151413 16
AUTO RESET
OPEN TO RESET
25 2826 27
T4000
CLOSE
NC.
3229 30 31
OUT. 22
VARIABLE
RELAY
• Automatic synchronization with
voltage based speed control
• Adjustable stability and phase angle.
• Visual indication of bus voltage,
generator voltage and closing signal
• Output adaptable to most electronic
speed controllers
• Automatic or remote reset of output
• Cost effective and highly reliable
compact design
• 50 hours burn-in before final test
• Operating temperature range:
-20°C to +70°C
• Certified by major marine
classification societies
• Flame retardant enclosure
• Screw or DIN rail mounting
Application
The T4000 Auto Synchronizer provides
automatic synchronization of an
incoming generator to a busbar in a
minimum of time.
The T4000 operates in connection with
most electronic speed controllers. Via the
speed controller the T4000 controls the
speed and phase of the generator in order
to match it to the busbar. The T4000 will
lock the phase and frequency once accordance is obtained, thus enabling the
generator to stay in synchronisation with
the bus bar without closing the breaker.
Together with the T4400 Load Sharer,
the T4000 provides the optimal solution
for generator control, both in marine
and land-based applications. The T4000
is type approved by major marine
classification societies.
Function
The T4000 measures the voltage across
two phases on either side of the circuit
breaker in order to obtain data on frequency,
phase and voltage difference for closing
the circuit breaker at phase accordance.
The relay LED indicates when within
limits and a jumper between terminals
12 and 13 (CLOSE ENABLE) will enable
the closing contact CLOSE (terminals 9
and 10). The closing signal is maintained
for a minimum duration of 0.5 seconds.
When commissioning, it is recommended to
disconnect the closing signal by opening
the jumper between terminals 12 and 13.
Check that the closing signal indicated on
the relay LED is at phase accordance.
The DC control signal to the speed
controller must be reset when the circuit
breaker is closed. A jumper between
terminals 12 and 15 (AUTO RESET)
gives delayed automatic reset.
Alternatively a normally closed auxiliary
circuit breaker contact, connected to
terminals 12 and 14 (OPEN TO RESET),
ELECTRONIC GOVERNOR
gives remote reset when the contact is
opened. Reset is also obtained if the bus
or generator voltage drops below
approximately 50% of nominal voltage.
Impedance adaption of the output
(OUTPUT TO GOV.) to individual
electronic speed controllers can be done
using terminals 23 to 26. Output on
terminal 22 is variable (adjustable by a
screwdriver at VARIABLE OUT 22).
Alternatively, other impedance values can
be obtained by connecting an external
resistor between terminals 21 and 27.
The resistance is selected so that a speed
deviation range of ±3 Hz is possible.
The stability is adjusted on the dial
STABILITY for the fastest phase accordance which does not cause overshoot.
GAS ENGINE
AUTO-SYNCHRONIZER
T4000
The limits for the closing signal are
adjustable on the dial PHASE ANGLE.
The phase can be adjusted between ±6°
and ±9°, and voltage difference between
±10 % and ±15%. When the difference
in voltage, phase and frequency are
within limit for 0.5 seconds, a closing
signal to the circuit breaker is generated,
provided that CLOSE ENABLE is activated (terminals 12 and 13 interconnected).
Fig. 1. Application Diagram.
Specifications
50
150
135
7.5
10
Fixing holes
2 x ø 4.5 mm
115
70
Dimensions in mm
T4000 Auto Synchronizer
Max. voltage 660V
Voltage range 70 - 110%
Consumption 4VA at UN
Frequency range 45 - 65Hz
Frequency difference 0.15Hz
Closing angle 6 - 9°
Voltage difference 10 - 15%
Output voltage Max. ±6V DC
Sync. time Less than 5 sec. for engine response 0.2 sec.
Contact rating AC: 400V, 8A, 2000VA
DC: 35V, 8A, 150W
Operating temperature -20 to +70°C
EMC CE according to EN50081-1, EN50082-1, EN50081-2,
EN50082-2
Approvals Certified by major marine classification societies
Fig. 2. Dimensions.
Connection between terminals 17 and
18 (FORW.) will control the output to a
positive voltage for increasing
frequency. A connection between
terminals 18 and 19 (INV.) will give negative voltage for increasing frequency.
Type Approvals and Certificates
The T4000 has been approved by the
following marine classification societies:
Bureau Veritas
Croatian Register of Shipping
Germanischer Lloyd
Romanian Register of Shipping
Russian Maritime Register of Shipping
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
Burn-in 50 hours before final test
Enclosure material Polycarbonate, flame retardant
Weight 0.7kg
Dimensions H x W x D) 70 x 150 x 115mm
Installation 35 DIN rail or two 4mm (3/16”) screws
Output terminals
Terminal 21 Common
Terminal 22 1k
Turn clockwise for increasing resistance
Terminal 23 1.2M
Terminal 24 820k
Terminal 25 480k
Terminal 26 100k
Terminal 27 1k
Terminal 28 No internal connection
The specifications are subject to change without notice.
W to 2MW, adjustable on the front.
W
W
W
W
W, low impedance
Type Selection Table
Type Terminals
1-3 2-3
5-7 6-7
T4000.0010 450V 400V
T4000.0020 230V
T4000.0030 480V 415V
T4000.0040 110V 100V
T4000.0050 127V 120V
Other supply voltages and specialities are available on request.
T4095-62E
Loading...