Protection Relays & Controls
Generator & Single-Function Protection–Power
T2700 SERIES
Power Relay
Description
The T2700 Power Relay is intended for detection of power
levels for protection, control or monitoring purposes. The T2700
will protect a generator from excessive active loads [kW].
The T2700 calculates I x cos
φ,
representing the active power.
If the active power exceeds the preset level (15-150%), the
pick-up LED will indicate this and the delay timer will be
started. After the preset time (2-20 sec.) has expired, the
output relay and LED will be activated, provided that the active
power level was exceeded for the entire delay time.
Features & Benefits
Simplified Circuit Diagram
L - L SUPPLY
FEATURES
Accepts high supply
voltage variation
G
BENEFITS
Ensures correct operation in spite of voltage
supply fluctuations (fulfills marine class
requirement)
13
RESET
14
7
8
9
10
1
2
3
T2700
(Power
Relay)
5
6
C/B TRIP
L1
L2
LOAD
L3
Visual indication of power,
Provides quick and concise status information
pick-up, and output trip
Direct line-line or line-
Simplifies design and installation.
neutral voltage supply (up
No need for PTs.
to 690 Vac)
Protects the unit against high AC voltage and
Galvanic isolated inputs
currents from the installation including spikes
DIN-rail or screw-mount
& adjustment by
Easy installation
potentiometers
Specifications
L - N SUPPLY
G
13
RESET
14
7
8
9
10
1
2
3
Trip Level
Delay
Max. Voltage
Voltage Range
Consumption
T2700
(Power
Relay)
5
6
C/B TRIP
L1
L2
LOAD
L3
N
Ordering Information
ORDERING
NUMBER
TERMINALS
1-3
2-3
I
N
SUPPLY FUNCTION
T2700.00
T2700.02
T2700.03
T2700.04
T2700-08
230 V
5A
L-N
L-L
L-L
L-L
L-N
Normally energized output
15-150% I
N
2-20 sec.
660 V
60-110%
Voltage 5 VA at U
N
Current 0.3 VA at I
N
Continuous Current
2 x I
N
Frequency Range
45-400 Hz
Output Relay
Normally de-energized, latching, resetable
Contact Rating
AC: 400 V, 5 A, 1250 VA; DC: 150 V, 5 A, 120 W
Overall Accuracy
±5%
Repeatability
±1%
Operating Temperature
–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
Enclosure Material
Polycarbonate. Flame retardant
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 (
3
/
16
”) screws
450 V 400 V 5 A
230 V 400 V 5 A
110 V 100 V 5 A
127 V 120 V 5 A
Other supply voltages and combinations are available on request.
© 2014 Littelfuse Protection Relays & Controls
Littelfuse.com/t2700
Rev: 4-B-111014
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