There are still some products that have not been listed yet. For more information, please contact us. If the product model does not match the displayed picture, the actual model shall prevail. Please consult us for specific product images; We will arrange for the warehouse to take photos for confirmation. We have 76 shared warehouses worldwide, so it may take several hours to accurately respond to your message. We deeply apologize for any inconvenience caused to you. Of course, we will process your inquiry as soon as possible.

The ABB REX010 HESG324426R0001 (also referenced as REX010 or with companion part HESG324389) is a specialized earth fault protection injection unit (or 100% stator earth fault protection auxiliary/injection module) designed for generator and excitation systems. The ABB REX010 HESG324426R0001 is an auxiliary component primarily used with legacy ABB REG216 / REG316*4 series voltage regulators and protection relays to provide comprehensive 100% stator earth fault protection, including coverage of the entire stator winding down to the neutral point. The ABB REX010 HESG324426R0001 generates a low-frequency injection signal (typically from station battery or internal DC/DC converter) to detect high-impedance earth faults in the stator, offering high sensitivity and selectivity in generator protection applications. The ABB REX010 HESG324426R0001 is compact, robust, and matched for integration in synchronous generator excitation and protection setups in power plants and heavy industrial environments. The ABB REX010 HESG324426R0001 supports reliable fault detection even under low-load or no-load conditions. Overall, the ABB REX010 HESG324426R0001 is a proven auxiliary for enhancing generator stator ground fault protection in legacy REG216/REG316 systems.

Model / Part Number,REX010 / HESG324426R0001 (related: HESG324389)

Device Type,Earth Fault Protection Injection Unit / Auxiliary Module (100% Stator Earth Fault Protection)

Primary Application,100% stator earth fault protection for synchronous generators; auxiliary to REG216 / REG316*4 voltage regulators

Protection Coverage,Entire stator winding including neutral point; high-impedance / high-resistance earth faults

Injection Signal,Generated from station battery or internal DC/DC converter; low-frequency injection method

Compatibility,Perfectly matched for REG216 / REG316*4 series; part of REG series excitation/protection ecosystem

Power Supply,Connected to station battery (typically 110–220 V DC)

Operating Mode,Continuous injection for sensitive detection

Dimensions (approx.),"Compact module (e.g., 250 × 250 × 250 mm shipping envelope)"

Weight (approx.),~1.26 kg

Operating Temperature,Industrial range (typically -20 °C to +60 °C; refer to REG216/316 manual for exact)

Additional Features,"Compact design, high reliability, integrated with REG series for full stator coverage"

Country of Origin,Sweden / Finland (typical ABB)

Life Cycle Status,Legacy (spares available via aftermarket; support for existing REG216/316 installations)

Install the ABB REX010 HESG324426R0001 in the generator protection/excitation cabinet alongside the REG216/REG316*4 unit, ensuring secure mounting and alignment.

Connect to station battery DC supply (verify voltage/polarity) and link signal injection terminals to the stator neutral/grounding transformer per REG series wiring diagram.

Wire communication or supervision signals (if required) to the main REG216/REG316 relay for fault indication and tripping.

Power up the system; verify injection signal generation and monitor status LEDs (if present) or REG HMI for normal operation of the ABB REX010 HESG324426R0001.

Configure protection settings in the REG216/REG316 (e.g., sensitivity threshold, alarm/trip levels) to utilize the injection-based earth fault detection.

Perform commissioning tests: simulate earth faults (high-resistance injection), verify detection sensitivity, and confirm coordination with other protections.

Monitor during operation: check for injection continuity, fault alarms, and periodic self-test results via the REG system.

Only qualified protection/electrical personnel should install or service the ABB REX010 HESG324426R0001, following ABB REG216/REG316 safety guidelines and generator protection standards.

Isolate generator excitation/power, lock out/tag out, discharge capacitors, short CT secondaries if applicable, and confirm zero energy before handling the ABB REX010 HESG324426R0001.

Ensure correct polarity for DC supply and injection connections; use shielded cables where specified to minimize noise/interference.

Verify compatibility with the specific REG216/REG316 variant; do not exceed rated voltage or environmental limits for the ABB REX010 HESG324426R0001.

Ground properly and route injection wiring away from high-power cables to maintain signal integrity.

Avoid unauthorized modifications or bypassing supervision functions in the ABB REX010 HESG324426R0001.

Check status indicators (LEDs or REG HMI supervision) on the ABB REX010 HESG324426R0001 each shift for normal injection, power, and fault-free operation.

Monitor generator earth fault alarms, injection continuity, and any diagnostic messages via the REG216/REG316 interface.

Inspect connections, cabling, and mounting for tightness, corrosion, or damage related to the ABB REX010 HESG324426R0001.

Verify station battery voltage remains stable for reliable injection signal generation.

Clean module surfaces and ventilation (power off first) to prevent dust/thermal issues affecting the ABB REX010 HESG324426R0001.

Review event logs in the REG system for earth fault-related entries or anomalies; perform periodic injection tests during planned outages.

Contact ABB/Hitachi Energy support or spares providers immediately for faults, calibration needs, or replacement of the ABB REX010 HESG324426R0001 in legacy systems.

Do you provide global shipping services?

Yes. We have local distribution centers on all continents, which can quickly transport parts to any corner of the world.

2. What payment methods and currencies do you accept?

To make your purchasing process as simple as possible, we offer multiple payment methods including bank transfer, check, and PayPal. Meanwhile, we also accept most mainstream credit and debit cards, such as Visa, Mastercard, and American Express. We can accept payments in most major currencies worldwide, but we recommend using US dollars (USD), British pounds (GBP), or euros (EUR) as a priority. Payments in other currencies may incur additional fees. All transactions are securely processed by HSBC Bank and HSBC Merchant Services.

How many parts do you currently have in stock?

We have a vast inventory of thousands of new, refurbished, and outdated automation components, including products from well-known manufacturers such as ABB and Schneider. If you cannot find the required parts, please do not worry. We work closely with a global network of professional suppliers to provide you with tailored quotes even if the part is not listed on our website.

Who can I contact if I encounter any problems?

Our experienced customer service team will handle any issues after you place your order.