ISOM Digiware

The ISOM DIGIWARE system is a modular insulation-monitoring architecture for IT electrical networks. It combines a permanent insulation monitoring device (L-60 module), a fault locator (F-60 module) and a display/communication gateway (D-x5) exchanging data via the Digiware bus. Compliance with the IEC 61557-8 and IEC 61557-9 standards guarantees measurement reliability on sensitive installations.

Modular architecture and scalability of the ISOM DIGIWARE system

Module composition and progressive expansion

The ISOM DIGIWARE architecture allows deployment to start with just the L-60 insulation-monitoring module, then later integrate the F-60 locator and the D-x5 display. This scalability avoids replacing the initial infrastructure as supervision needs become more complex. Our installation experience confirms that this modular approach significantly reduces commissioning costs on sites where fault location is not required from the outset.

Synchronisation via the Digiware bus and disturbance resistance

Synchronisation between modules is carried out via the proprietary Digiware bus, optimised to maintain data consistency on heavily disturbed networks. In the field, we find that this characteristic is decisive in industrial environments where drives and converters generate significant electromagnetic disturbance.

Communication integration and centralised supervision

Modbus TCP and RS485 protocols for interoperability

The D-x5 display natively incorporates Modbus TCP communication for integration into existing supervision systems. The RS485 interface simultaneously allows connection to DIRIS Digiware energy-measurement modules and to COUNTIS E or DIRIS A meters. Our standard practice favours this dual communication path to centralise insulation and consumption data on the same platform.

Compatibility with the Digiware ecosystem

Having ISOM, DIRIS and COUNTIS modules coexist on the same bus simplifies the electrical panel's wired architecture. We observe that this unification reduces the number of gateways needed and makes preventive maintenance easier through single-point access to all measurement parameters.

Typical applications and implementation

Data centres and critical infrastructure

Data centres make extensive use of IT networks to ensure continuity of service for redundant supplies. The ISOM DIGIWARE system provides early detection of insulation faults there with no unplanned shutdown. Feedback from installers confirms that fault location via the F-60 module drastically reduces intervention time on secondary distribution panels.

Industrial sites with a disturbed environment

Critical industrial sites incorporate the L-60 controller for permanent monitoring of production networks. The standardised DIN-rail polyamide housing allows mounting in existing electrical panels with no specific mechanical adaptation.

Frequently asked questions

Which standard governs the insulation controller of the ISOM DIGIWARE system?

The L-60 module complies with the IEC 61557-8 standard for permanent insulation monitoring devices on IT networks. The F-60 fault-location module complies with IEC 61557-9.

Can remote communication be added to an existing installation without a D-x5 module?

No, the D-x5 display/gateway is essential to have Modbus TCP communication. It simply adds onto the existing Digiware bus with no reconfiguration of the L-60 and F-60 modules already installed.

Is the Digiware bus compatible with energy meters from other brands?

The Digiware bus is proprietary and dedicated to Socomec's Digiware ranges. Interoperability with third-party meters is achieved via the RS485 interface and the standardised protocol, not via the Digiware bus itself.

What is the advantage of an IT network over TN-S for insulation monitoring?

The IT network (isolated from earth) allows continuity of service in the event of a first insulation fault, unlike the TN-S network, where the first fault triggers a shutdown. The insulation controller then signals the anomaly with no supply interruption.