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IPTE

Digital Tap Position Indicator for Tap Changers

Digital tap position indicator for remote monitoring of the transformer tap changer position.

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Description

The IPTE Tap Position Indicator is a device designed for remote tap position indication on transformers using on-load tap changers with a potentiometric ring. Its main function is to receive the potentiometric ring signal (resistive or 4 to 20 mA current) and show the current tap position on a programmable numeric display (for example, 1–51 or -24–0–24). It also provides universal analog outputs and digital outputs (RS485 with Modbus RTU and DNP3 protocols) for remote access to parameters and commands.

The IPTE was developed to strict quality standards and designed to withstand harsh operating conditions. It can be installed in power substation yards, offshore platforms and chemical plants. It meets the requirements for withstand capability and reliability specified by IEC, DIN, IEEE and ABNT standards.

Technical data

Specifications

• High-brightness 4-digit display with 20 mm digit height and 13 mm decimal digit (red);

• Measurement range from 0 to 50 positions (0 to 5000 ohms), maximum step of 100 ohms;

• Potentiometric ring signal input (mA and resistive);

• Universal 48 to 265 VDC/VAC power supply;

• RS-485 digital output (ANSI/TIA/EIA-485-A) with Modbus RTU and DNP 3 (Level 1) protocols for remote access to all measured parameters;

• Analog output of 0 to 1 mA, 0 to 5 mA, 0 to 10 mA, 0 to 20 mA and 4 to 20 mA, configurable directly on the front panel;

• Front USB Type-C port for parameter configuration using UseEasy™ software;

• Stores the maximum and minimum tap positions reached during the period in memory;

• Contact for fault indication (Watchdog);

• High mechanical strength enclosure made entirely of aluminum;

• IP20 degree of protection (NBR IEC 60529);

• Auto Baud Rate from 2400 to 57,600 bps (automatically detects the communication network speed);

• High mechanical strength enclosure made entirely of aluminum, DIN IEC 61554 standard;

• Compact dimensions: 98 x 50 x 82.5 mm;

• Easy parameter configuration and use;

• 2-year warranty;

Specifications

Operating temperature: -40 to +85°C

Power consumption: < 15 W

Tap position measurement input: 0 to 5000 ohm resistive ring; 0 to 20 mA or 4 to 20 mA transducer

Measurement range: -50 to 50 tap positions – Programmable (50 positions)

Analog Output Options and Maximum Loads (5 outputs configurable on the device)

0 … 1 mA – 8000 ohms

0 … 5 mA – 1600 ohms

0 … 10 mA – 800 ohms

0 … 20 mA – 400 ohms

4 … 20 mA – 400 ohms

Maximum analog output error: 0.25% of full scale

Output contacts: 8 – Potential-free

Maximum switching power: 70 W / 250 VA

Maximum carrying current: 6.0 A

Serial communication port: RS-485 (ANSI/TIA/EIA-485-A)

Communication protocol: Modbus RTU and DNP 3.0 (Slave)

Auto Baud Rate: 2400 to 57600 bps

Enclosure (DIN EIC 61544): 48 x 96 x 140 mm – Aluminum

Device mounting: Flush panel mounting

Degree of protection (NBR IEC 60529): IP 20

Applications

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