Key Benefits

• Economical simple monitoring of key values and setting of analog outputs or communications
• Configurable using QDSP software
• Standard Serial (RS232 or RS485) communications
• Easy installation with compact size, DIN mountable with available universal power supply

i4DA Tap Position Indicator

GE Vernova has discontinued sales of iSTAT i4DA. Please contact us to discuss alternatives.
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

GE Vernova has discontinued sales of iSTAT i4DC. Please contact us to discuss alternatives.
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 Vernova 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

GE Vernova has discontinued sales of iSTAT i4DG. Please contact us to discuss alternatives.
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 Vernova has discontinued sales of iSTAT i4XS. As an alternative, please refer to Multinet FE.

Key Benefits

• Serial RS232 or RS485 to Ethernet communications interface
• Serial transmission rates from 1,200 to 115,200 bits per second
• Easy installation with DIN rail mounting
• Universal AC/DC auxiliary power supply

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 Vernova iSTAT programmable measurement center and transducer products. The software provides functionality for device setup, simulation and visualization.

Software base configuration using iSTAT QDSP setting software

More Info

Manufacturing for the Brick Cables have been discontinued.

The custom FOA cables are ordered to length and are connectorized at each end. These FOA cables require the use of the Cross Connect Panel, and the FOR Indoor Relay Fiber Cable, to connect to the UR relay. DC power to the Brick is distributed by the Cross Connect Panel, and short circuit protection for the Brick power supply is included in the FOA cable.

The FOA Splice Cable is intended to meet customer standards for fiber optic cable distribution through the switchyard. The FOA Splice Cable is connectorized at the Brick end and ends in copper and fiber pigtails. The customer must provide their own fiber optic cables across the switchyard, DC supply to power the Brick, DC short circuit protection for the Brick power supply, and perform their own splicing to the pigtails of the FOA Splice Cable

The HardFiber S-Brick Process Interface Unit (Order Code: BRICK-4-HI-S- ****-*-X-X) is intended for mounting inside marshalling cabinets, kiosks, and equipment control cabinets. The S-Bricks have 8 analog measurements, either 4 currents / 4 voltages, or 8 currents, along with 18 contact inputs, 3 universal DC inputs, 4 Form-A tripping contacts, 2 Form-C signaling contacts, and latching contact. It uses standard terminal blocks for connecting copper cables to interface with primary equipment. Fiber optic cables require the use of one simplex LC connector for each of the four fiber optic cores. The HardFiber S-Brick Process Interface Unit works directly with models of the GE Vernova Universal Relay (UR) family. The S-Brick requires the customer to provide copper cabling to interface with primary equipment, DC supply to power the S-Brick, and fiber optic cabling and cabling management between the S-Brick and end device

The Multilin HardFiber System requires the use of 50/125 mm multimode fiber, that support 1310nm and 1550nm transmission. Class 1 graded index fiber is ideal. In general, OM2 and OM3 rated fibers meet these requirements. Environmental rating of the fiber cables is as per customer application. The S-Brick and the UR have female LC connectors, so cables must use male LC connectors at these ends. The S-Brick has 4 LC connectors, while the UR has 8 LC connectors. Commercially available fiber optic patch panels may be used for cable management. The customer must provide a 125 or 250 VDC rated supply to power the S-Brick. The DC circuit must provide short circuit protection for the S-Brick power supply, (1A, fast acting, 10,000 A DC interrupting capacity, Littelfuse KLKD001 or equivalent). The general recommendation is to power the S-Brick separately from the associated primary equipment for good operating and maintenance practices.

• Communications interface between the relay and up to eight Bricks, including synchronization, data alignment and contact input processing
• Transmits commands to connected Bricks to operate primary power system apparatus
• Real-time system health monitoring and data cross-checking — unprecedented level of error detection and security

The architecture of the HardFiber System is driven by the mapping of signals between the primary apparatus and the protection and control devices. The measurement of field signals and respective mapping of these signals, using the open IEC 61850 communications protocol, back to the control house is done through a hardened interface device called the HardFiber Brick.

Using made-to-order Outdoor Fiber Cables connecting the Brick to a Cross Connect Panel in the control house provides fast and error-proof installation without the need for on-site splicing or terminating.

Keeping true to the existing topology of traditional substations, each protection and control device included in the zone of protection will be connected directly to Bricks through dedicated fiber optic connections.

This simple, purpose-driven architecture that uses the IEC 61850 open standard for communications, provides dedicated point-to-point connections between the Brick and protective relays without introducing any issues relating to data synchronization, setting management or Cyber Security.

The true test of any system, including a Process Bus system, is its ability to incrementally scale up to meet specific applications without adversely affecting the other devices in the system. Today’s protection and control systems are already naturally scalable.

The challenge for communication-based protection systems becomes making extensions and modifications without disrupting the in-service protection and control system.

By recognizing that the mapping between power system signals and protection and control devices is fundamentally driven by the topology of the underlying substation, the HardFiber System is optimally partitioned and connected to allow for additions, modifications and upgrades to the system – without risking interruption or degradation to critical in-service protection.

The HardFiber System provides an unprecedented level of diagnostics and self-checking, allowing critical protection and control systems to do something that they have never done before – operate without routine maintenance.

Internal diagnostics and self-tests within each Brick monitor dozens of critical internal subsystems and provide this information several hundred times per second. Duplicate Bricks can be provisioned to acquire each input signal twice, allowing protection and control devices to continuously crosscheck critical protection measurements before executing commands via fully redundant outputs.

With the HardFiber redundant architecture, each protection and control device can be configured to maximize dependability and security, addressing specific application requirements.