UST-3 Control and Signalling Terminal

Name: UST-3
Brand: IEL

Compact terminal for remote control, supervision and signalling of extendable and compact MV switchgear.

UST-3 is used for remote control, supervision and signalling of extendable or compact medium-voltage switchgear. It can be mounted in an MV switchgear module, in a common remote-terminal cabinet or on a mounting plate, while communication integration reduces wiring and speeds commissioning.

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For MV modules and RES connection points

Used in complex and compact MV switchgear and renewable-source connection installations.
16 DI, 8 DO, 2 AI

Digital inputs, relay outputs and analogue inputs for supervision and control.
LED signalling

Each device-state change is dynamically displayed on LED elements.
RS485 or optical link

Communication with the central unit through RS485 or P.F.O. with MODBUS RTU.
USB parametrisation

Parametrisation through USB and UST-3 DIALOG/KJ DIALOG software.
DIN-rail mounting

Compact construction for 35 mm DIN-rail mounting.

Digital inputs: 16 (I1...I16)
Analogue inputs: 2 (AI1...AI2), 4-20 mA or 0-10 V
Input supply: external 24-72 V DC, 90-130 V DC, 180-260 V DC or 210-250 V AC
Relay outputs: 8 (O1...O8), NO contact, Umax 250 V DC, Imax 3 A
Breaking capacity: 100 V DC: 20 W; 50 V DC: 20 W; 24 V DC: 120 W
Central-unit link: RS485 or P.F.O., MODBUS RTU
Optical link: 660 nm snap-in or 860 nm ST connector
Parametrisation: USB, UST-3 DIALOG, KJ DIALOG
Power supply: 24-72 V DC, 85-300 V DC, 100-250 V AC
Consumption: 8 VA
Temperature range: -25...+55 °C; extended -30...+60 °C
Mounting and dimensions: 35 mm DIN rail, 106 x 90 x 58 mm