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iSTAT i400
Mean Sensing (i4CA, i4VA), DC (i4Dx) Transducers and i4XS Communications Interface

The iSTAT i400 range of Mean Sensing AC transducers, DC transducers and communications interface provide easy installation and commissioning as well as simple and economical monitoring and communications. The iSTAT i400 Mean Sensing and DC transducers are simple and compact offerings available to measure AC or DC circuits respectively for utility and industrial applications.

The self-powered, i400 Mean Sensing AC transducers (i4CA, i4VA) are used to measure current or voltage and provide an output analogue signal as an indication.

The iSTAT i400 DC measuring transducers monitor values such as DC Volts (i4DB), DC Current (i4DC), Tap Position (i4DA), Resistance (i4DF), and Temperature (Resistance Temperature Detector) (i4DG) and provides an analogue output or communications. The i400 i4Dx DC measuring transducers also provide Modbus serial communications for integration into monitoring systems.

The iSTAT i4XS communications interface provides a Serial to Ethernet interface allowing easy connection and integration of devices to a communications network and monitoring system.

Supply for the following models remain available:

  • i4CA – AC Current
  • i4DA – Tap Position
  • i4DB – DC Volts
  • i4DC – DC Current
  • i4DG - Temperature

GE has announced a last-time buy opportunity for the following models:

  • iSTAT i4VA is under last-time buy. Orders may be placed until 14th of July 2022 and will be fulfilled based upon availability.

GE has discontinued sales for the following models:

  • GE has discontinued sales of iSTAT i4DF. Please contact us to discuss alternatives.
  • GE has discontinued sales of iSTAT i4XS. As an alternative, please refer Multinet FE.
i4CA i4VA
i4Dx
i4XS
Software
Specifications

i4CA, i4VA Mean Sensing Transducers

Key Benefits

i4CA Current Transducer

The i4CA measures and monitors single phase current in an electrical power network and provides an analog DC output that can be used for devices such as PLCs, PCs, microprocessor control, indicators, alarms units etc.

Current input can be connected via a corresponding current transformer (with standard 1A or 5A output).

i4CA Current Transducer

i4CA Current Transducer

i4VA Voltage Transducer
iSTAT i4VA is under last-time buy. Orders may be placed until 14th of July 2022 and will be fulfilled based upon availability.

The i4VA measures and monitors single phase voltage in an electrical power network and provides an analog DC output that can be used for devices such as PLCs, PCs, microprocessor control, indicators, alarms units etc.

Voltage input can be connected either directly to low voltage network or shall be connected to network via a corresponding voltage transformer (with standard 100V output).

i4CA Current Transducer

i4VA Voltage Transducer

i4Dx Digital DC Transducers

Key Benefits
iSTAT i4Dx DC Transducers (i4Dx)

The i4Dx DC measurement transducers have a variety of specific monitoring functions and applications for use in industrial or utility applications to convert nonlinear resistance sensors (RTD – sensors) into DC current or DC voltage signal outputs. iSTAT i4Dx transducers are customer configurable using GE iSTAT QDSP setup software and are supplied with Serial (RS232 or RS485) communications to allow configuration of the transducer and communications of measurement values to a monitoring system. The i4Dx transducers are compact and DIN mountable and are also provided with a standard AC auxiliary power supply with option of a universal power supply for easy installation.

i4DC Current Transducer

i4DC Current Transducer



i4DA Tap Position Indicator
The i4DA indicates the tap position by measuring the resistance proportional to the actual tap position. It monitors up to 100 steps with a minimum value of 30 Ohms per step, with a total resistance range of 100 to 500 k.

i4DB DC Voltage, i4DC Current
The i4DB voltage and i4DC current transducers measure DC voltage or current values respectively and convert them to proportional DC analogue values.

i4DF Resistance
GE has discontinued sales of iSTAT i4DF. Please contact us to discuss alternatives.
The i4DF transducer measures resistance values using 2, 3 or 4 wire connections and converts this to a proportional DC analogue value. The measurement range can be 10 to 50 k Ohms or 100 to 500 k Ohms.

i4DG Temperature
The i4DG transducer measures temperature using either Pt100, Pt1000, Ni100 RTD sensors and converts this to a proportional DC analogue value. The externally supplied RTD sensors can be connected as 2, 3 or 4 wire. The measurement range can be -200°C to +850°C (Pt) or -608°C to +250°C (Ni).

i4XS Communications Interface
GE has discontinued sales of iSTAT i4XS. As an alternative, please refer to Multinet FE.

Key Benefits

The i4XS connects devices with Serial (RS232 or RS485) ports to an ethernet network enabling communications between devices and a monitoring or HMI system on a workstation.

The i4XS provides an Ethernet RJ45 10/100 BASE-T terminal and depending on the model ordered a Serial RS232 bolted direct connection for a single connection or a Serial RS485 bolted network connection for up to 32 connections. The interfaces are designed for reading data from instruments (by means of corresponding software) with a communication rate of up to 115.2 kbps. A unique MAC address is provided for each Ethernet connection and an IP address can be set in the i4XS for programming using a standard web browser.

The i4XS is easy to install with the housing designed for a standardized DIN 35x15 mm rail mounting (in compliance with EN 50022) and an auxiliary AC supply that is selected at order is available.

i4XS

i4XS


Software

Easy Configuration with QDSP Settings Software (i4Dx)

The iSTAT i4Dx DC transducers can be configured using iSTAT QDSP settings software via connection with the Serial (RS232 or RS485) communications port. QDSP settings software is used across the range of GE iSTAT programmable measurement center and transducer products. The software provides functionality for device setup, simulation and visualization.

iSTAT i4Dx Software

Software base configuration using iSTAT QDSP setting software

Specifications

Dimensional Drawings i4CA,i4VA,i4Dx,i4XS
 
Dimensions

Note: All dimensions are in millimeters

Technical Specifications
VOLTAGE MEASUREMENTS (i4VA)
Standard nominal input voltage (UN) 57.7, 63.5, 69.3, 100, 110, 115, 120, 127, 220, 230, 240, 250, 380, 400, 415, 440, 500 V
Measuring range limit values 0 ... 50 V to 0 ... 500 V
Overload capacity: acc. to EN 60688
Max. measured value (cont.) 1.2 x UN
Max. allowed value 2 × UN ; 1 s, 10 times, 10 s interval
Consumption < 2 VA
CURRENT MEASUREMENTS (i4CA)
Standard nominal input current (IN) 1 A, 5 A or 6 A
Measuring range limit values 0 … 0.5 A to 0 … 6 A
Overload capacity acc. to EN 60688
Max. measured value (cont.) 1.2 x IN
Max. allowed value 20 × IN ; 1 s, 10 times, 300s interval
Consumption < 2 VA
FREQUENCY MEASUREMENTS (i4CA, i4VA)
Nominal frequency (fN) 50 / 60 Hz
Measuring frequency range 45 … 65 Hz
MEASURING OUTPUT (i4CA, i4VA)
Standard ranges IAN: 0 … 1 mA, 0 … 5 mA, 0 … 10 mA, 0 … 20 mA
Burden voltage: 10 V
External resistance: RB max = 10 V / IAN
Maximal output voltage (open circuit current output) < 25 V
Maximal output current 3 × IAN
Residual ripple < 1 % p.p.
Response time < 300 ms
ENVIRONMENTAL (i4CA, i4VA)
Nominal temperature range - 10 … 15 … 30 … 55 °C
Operating temp. range - 20 to + 70 °C
Storage temperature range - 40 to + 70 °C
Average annual humidity ≤ 93 % r.h.
Altitude ≤ 2000 m
Indoor use only
COMMUNICATION (i4DX)
SERIAL COMMUNICATION RS232
Connection type: Point to point
Signal levels: RS232
Maximum cable length: 15 m
Connector: Screw terminals
Isolation: 3.7 kV rms for 1 minute between all terminals and all other circuits, except between communication terminals and output terminals, 2 kV rms for 1 minute
Transmission mode: Asynchronous
Message format: MODBUS RTU
Data rate : 1.200 to 115.200 bits/s
SERIAL COMMUNICATION RS485
Connection type: Multi-drop (32 connections per link)
Signal levels: RS485
Cable type: Screened twisted pair
Maximum cable length: 1000 m
Connector: Screw terminals
Isolation: 3.7 kV rms for 1 minute between all
terminals and all other circuits, except between communication terminals and output terminals, 2 kV rms for 1 minute
Transmission mode: Asynchronous
Message format: MODBUS RTU
Data rate (very high speed): 1,200 to 115,200 bits/s
POWER SUPPLY (i4DX)
UNIVERSAL
Auxiliary AC/DC voltage (universal):
>Rated voltage (Ur): 24…300 V DC 40…276 V AC
Frequency range: 40…70 Hz
Power consumption: < 3 VA
AUX AC VOLTAGE
Rated Voltage Ur 57.74V, 100V, 230V, 400V, 500V
Frequency range: 45…65 Hz
Power consumption: < 3 VA
ENVIRONMENTAL (i4DX)
Climatic rating: Climate class 2 acc. To EN 60688: 1992
Operating temperature -10 to +55 °C
Storage temperature -40 to +70 °C
Annual mean relative humidity: ≤ 75% r.h.
MECHANICAL (i4CA, i4VA, i4DX)
Dimensions W45 × H75 × D105 mm
Mounting Rail mounting 35 × 15 mm (acc. to EN 50022)
Enclosure material PC / ABS
Flammability Acc. to UL 94 V‐0
Connection terminals ≤ 4.0 mm2 solid wire ≤2.5 mm2 stranded wire
Weight approx. 300g
COMPLIANCE (i4CA, i4VA)
IEC 61010-1 Safety requirements for electrical equipment for measurement, control and laboratory use
IEC 60688 Electrical measuring transducers for converting AC electrical variables into analogue and digital signals
IEC 61326 EMC requirements for electrical equipment for measurement, control and laboratory use – Part 1: General requirements
IEC 60529 Degrees of protection provided by enclosures (IP code)
IEC 60068-2-1/ -2/ -6/ -27/-30 Environmental testing (-1 Cold, -2 Dry heat, -30 Damp heat, -6 Vibration, -27 Shock)
UL 94 Tests for flammability of plastic materials for parts in devices and appliances
COMPLIANCE (i4DX)
Low voltage directive 73/23/EEC: EN 61010-1: 1993 and EN 61010-A3: 1995
Safety requirements for electrical equipment for measurement, control, and laboratory use, Part 1: General requirements
>EMC directive 89/336/EEC: EN 61326-1: 1997
Electrical equipment for measurement, control, and laboratory use EMC requirements, Part 1: General requirements.

Note: Additional Technical Specifications can be found in the Instruction Manual.