IOMod FPI – Fault passage indicator

Overview

IOMod FPI is a fault passage indicator module for medium voltage applications that can be used as a standalone device or part of Elseta mini RTU with voltages and currents based on sensors technology or with adapters connected to current and voltage transformers with communication support based on Modbus RTU, IEC 60870-5-101, and IEC 60870-5-103 protocols.

Designed for short-circuit and earth fault indication with direction detection. IOMod FPI can be used for numerous applications like electrical distribution substations, photovoltaic and hydropower plants, and railway power supplies where the user needs them.

IOMod FPI also calculates neutral current and voltage RMS values I0 and U0 as well as many other measurements like active, reactive, apparent power for every phase, power factors per phase, phase angles for currents and voltages, and more.

Unique by the device size and functionality complexity, it perfectly fits into any application like a recloser, RTU cabinet, or switchgear retrofit project. This device enables utilities and distribution network operators (DNO) to digitalize substations into smart grid elements.

Features

Directional fault detection for all network types;
Earth fault detection;
50 Instantaneous overcurrent detection;
50N Neutral instantaneous overcurrent detection;
51/67 Phase directional overcurrent detection;
67N Neutral directional overcurrent detection;
27 Under voltage detection (with VT or voltage sensors);
59 Over voltage detection (with VT or voltage sensors);
59N Neutral over voltage detection / permanent earth fault (with VT or voltage sensors);
81HBL2 Inrush blocking for selected protections;
2 settings groups;
integration into Elseta mini RTU;
Measurements of RMS values for currents, phase, and phase-to-phase voltages.
Additional measurements of:
- Frequency;
- Active, reactive, and apparent power;
- Neutral voltage, neutral current;
- Power factor;
- Phase angle;

Analog inputs measurement in 16-bit resolution.
3x low-power (LoPo) current measuring inputs (225 mV) or 3x1A/5A CT with the adapter.
3x low-power (LoPo) voltage measuring inputs (3.25 V/√3) or 3x100V/400V VT with the adapter.
Frequency acquisition (Nominal frequencies: 50 and 60 Hz; Frequency range: 45–65 Hz).
Communication port: RS485.
Communication over Modbus RTU, IEC 60870-5-101, and IEC 60870-5-103 protocols.

Specifications

Device data
Article number	IOMOD-FPI
Product Description	3 Current sensor inputs and 3 Voltage sensor inputs module
Configuration software	IOMOD Utility*
Warranty	2 years
Measurement values and functions
Analog inputs	6x 16-bit resolution
Input types	Channel-independent
Current inputs	3
Current inputs measurement range	225 mV (IEC 61869-10) with external adapter 1A / 5A
Current input impedance	1 MΩ; < 170 pF
Accuracy	1%
Voltage inputs	3
Voltage input measurement range	3.25 V/√3 AC (IEC 61869-11) with external adapter 100VAC / 400VAC
Voltage input impedance	1 MΩ; < 170 pF
Accuracy	1%
Frequency measurement range	45..65 Hz
Overvoltage protection	±20V
Interface and communication
RS485 interface	ANSI/TIA/EIA-485-A-1998
Communication protocols	– Modbus RTU Slave; – IEC 60870-5-101 Slave; – IEC 60870-5-103 Slave.
Baudrate	600 – 115200
Parity	None, Even, Odd
Terminating resistors	120 Ohm (configurable)
USB interface
Type	Mini USB
Use	Configuration/Firmware upgrade
Power supply
Auxiliary power supply	9-33VDC (full range)
Power consumption	40mA @ 12VDC, 20mA @ 24 VDC
Insulation voltage	3 kV
Operating conditions
Operating temperature	-40°C … 85°C
Storage temperature	-40°C … 85°C
Humidity	max. 95 % (non-condensing)
Protection class	IP20
Dimensions and installation instructions
Case height x width x depth	119 x 17.5 x 101 mm
Installation type	DIN Rail mounting