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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

Delay 2-20 sec.

Max. Voltage 660 V

Voltage Range 60-110%

Consumption

Voltage 5 VA at U

Current 0.3 VA at I

Continuous Current 2 x I

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 (

/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

C/B TRIP

L - L SUPPLY

RESET

LOAD

LL L

T2700

(Power

Relay)

C/B TRIP

L - N SUPPLY

RESET

LOAD

L NL L

T2700

(Power

Relay)

Rev: 4-A-050213

Ordering Information

Simpliﬁed Circuit Diagram

Other supply voltages and combinations are available on request.

ORDERING

NUMBER

TERMINALS

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

T2700 SERIES 1

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Pagina 1 - T2700 SERIES

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