Littelfuse T2600 User Manual
Generator Control
Basic Generator Protection
T2600 SERIES
Dual-Current Relay
Simplified Circuit Diagram
L
1
L
2
L
3
1
CONTROL POWER
2
3
U
T2600
11
I
1
12
13
I
2
14
15
I
3
16
G6G4 G5
To check rel ay operation, check t hat the “PO WER” L ED is on, ensuring th at the supply is
present. Mea sure the supply vol tage which m ust be compa tible wi th infor mation lab el on
top of e nclosure. Measure the curren t circulat ing in term inals 11 -12, 13 -14 and 15-16 and
observe that at least on e of the currents are ab ove setting. 0. 5 x I
2019
G1 G2
11
(Dual Current Relay)
I
1
12
13
I
2
14
15
I
3
16
G3
CIRCUIT
CIRCUIT
18
2019
17
= 2.5A; 2 x IN = 10A .
N
STAR T
STOP
Ordering Information
ORDERING
NUMBER
T2600.0010 230 V 5 A 30 sec. or 1 sec.*
T2600.0020 450 V 400 V 5 A 30 sec. or 1 sec.*
T2600.0030 480 V 415 V 5 A 30 sec. or 1 sec.*
T2600.0040 450 V 400 V 5 A
T2600.0050 480 V 5 A
T2600.0060 110 V 100 V 5 A 30 sec. or 1 sec.*
T2600.0070 110 V 100 V 5 A
T2600.0080 230 V 5 A
T2600.0090 Extension Unit
*Pulse duration time for stop signal, bridge 17-18 = 1 sec.
TERMINALS
1-3 2-3
I
FUNCTION
N
30 sec.*, bridge 17-18 = stop current
increased 34%
30 sec.*, bridge 17-18 = stop current
increased 34%
30 sec. or 1 sec.*,
start current delay 1.0-10 secs
30 sec. or 1 sec.*,
normally de-energized start relay
Manual
G1
10
G1
G3
9
}
8
7
Manual
G1
G1
6
G3
5
}
4
Description
The T2600 Dual-Current Relay combines two current relays.
The function of the unit is to start or stop the standby diesel
generator according to the load situation. Current is measured
as a single phase measurement in each of the generators. Both
relays will respond to the highest of the currents, independent
of phase angle.
Starting signal: The starting output relay is controlled by the
high level start current relay (0.3-1.2 x I
of 3-30 seconds. If one of the 3 input currents exceeds the
) with a time delay
N
current setting for a longer period than the time setting, the
output relay will become deactivated.
Stopping signal: The low level current relay (0.2-0.8 x I
controls a time delay (1-10 minutes) which again controls the
stop output relay. If all input currents are lower than the current
setting for a longer period than the time delay setting of
1-10 minutes, the output relay will be activated.
Features & Benefits
FEATURES BENEFITS
STAR T
Accepts high supply voltage
variation
Visual indication of power,
STOP
pick-up, and output trip
Direct line-line or line-neutral
voltage supply (up to 690 Vac)
Simultaneous monitoring
of load level on
3 synchronous generators
Combining 2 trip outputs in
same enclosure
Extension module available
for monitoring of additional
3 generators
Galvanic isolated inputs
DIN-rail or screw-mount
& adjustment by
potentiometers
Ensures correct operation in spite of voltage
supply fluctuations (fulfills marine class
requirement)
Provides quick and concise status information
Simplifies design and installation.
No need for PTs.
Economic solution for load depending start/
stop of generators in parallel operation
Providing both start signal to stand-by
generator and stop signal of running
generator from same unit
Economic and easy to install system
enhancement
Protects the unit against high AC voltage and
currents from the installation including spikes
Easy installation
Specifications
Start Level 30 -120%
Delay 3-30 sec.
Stop Level 20-80%
Delay 1-10 min.
Max. Voltage 660 V
Voltage Range 60-110 %
Consumption 5 VA at U
Frequency Range 40-65 Hz
Contact Rating AC: 400 V, 8 A, 2000 VA; DC: 35 V, 8 A, 150 W
Overall Accuracy ±3% of highest value
Repeatability ±1%
Operating Temp. –20°C to +70°C
EMC CE according to EN50081-1, EN50082-1, EN50081-2,
EN50082-2
Approvals Certified by major marine classification societies
Burn-in 50 hours before final test
Weight 0.5 kg
Dimensions H 70 mm (2.76”); W 100 mm (3.94”); D 115 mm (4.52”)
Installation 35 mm DIN rail or 4 mm (
N
3
/16”) screws
)
N
© 2013 Littelfuse Protection Relays & Controls
www.littelfuse.com/t2600
Rev: 4-A-050313
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