Littelfuse T2700 Series - Manual

Protection Relays & Controls
© 2013 Littelfuse Protection Relays & Controls
Littelfuse.com/t2700
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.
Specifications
Trip Level 15-150% I
N
Delay 2-20 sec.
Max. Voltage 660 V
Voltage Range 60-110%
Consumption 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
Features & Benefits
FeaTureS BeNeFiTS
Accepts high supply
voltage variation
Ensures correct operation in spite of voltage
supply fluctuations (fulfills marine class
requirement)
Visual indication of power,
pick-up, and output trip
Provides quick and concise status information
Direct line-line or line-
neutral voltage supply (up
to 690 Vac)
Simplifies design and installation.
No need for PTs.
Galvanic isolated inputs
Protects the unit against high AC voltage and
currents from the installation including spikes
DIN-rail or screw-mount
& adjustment by
potentiometers
Easy installation
9 5
C/B TRIP
10
6
L - L SUPPLY
7
8
1
3
2 RESET
13
14
LOAD
1 2 3
L L L
G
T2700
(Power
Relay)
9 5
C/B TRIP
10 6
L - N SUPPLY
7
8
1
3
2 RESET
13
14
LOAD
1 2 3
L N L L
G
T2700
(Power
Relay)
Rev: 4-A-050213
Ordering Information
Simplified Circuit Diagram
Other supply voltages and combinations are available on request.
OrderiNG
NumBer
TermiNalS
i
N
SuPPly FuNcTiON
1-3 2-3
T2700.00 230 V 5 A L-N
T2700.02 450 V 400 V 5 A L-L
T2700.03 230 V 400 V 5 A L-L
T2700.04 110 V 100 V 5 A L-L Normally energized output
T2700-08 127 V 120 V 5 A L-N