- Product details
- Specifications
- Recommand
- Service & Policy
| 01 · PRODUCT DETAILS |
ABB · EXCITATION PROTECTION |
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PRODUCT IDENTITY
ABB HIEE205010R0003
UNS3020A-Z V3
Ground Fault Relay
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SYSTEM DUTY
Generator excitation protection
Monitors the rotor field circuit for loss of insulation to ground and supplies a protection response within the installed excitation scheme.
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Product snapshot
Version-specific replacement relay for established generator excitation installations. Match the complete product identification, V3 hardware execution, cabinet wiring and project protection settings before commissioning.
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| 02 · DIAGNOSTICS & CHANGEOVER |
PROTECTION SERVICE |
| Diagnostics & Protection |
Installation & Upgrades |
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ALARM AND TRIP REVIEW
Check recorded ground-fault indication, excitation status and project trip logic before concluding that the relay hardware is defective.
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EXACT EXECUTION MATCH
Retain the complete nameplate identity; neighboring hardware revisions should not be treated as interchangeable.
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INSULATION CHECK
Measure the rotor-to-ground insulation path under the approved outage procedure and compare the result with the protection setting record.
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WIRING PRESERVATION
Label terminals, capture jumper positions and preserve shield and grounding arrangements before the installed unit is removed.
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PROTECTION TEST
Use the documented commissioning method to prove alarm and trip paths without exposing the generator field circuit to an uncontrolled condition.
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RETURN TO SERVICE
Verify reference values, protection thresholds and downstream annunciation before the excitation channel is released for operation.
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Technical data
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EXCITATION PLATFORM
UNITROL 5000
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CUSTOMS TARIFF CODE
85364910
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PROTECTION OBJECT
Generator rotor field circuit
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MONITORED CONDITION
Rotor-to-ground insulation
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DETECTION CONCEPT
Bridge-balance monitoring
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COUNTRY OF ORIGIN
Switzerland
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| 03 · BRAND & APPLICATIONS |
PRODUCT REFERENCES |
| Brand characteristics |
Application fields |
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Excitation-system continuity
ABB protection hardware supports disciplined lifecycle service of installed generator excitation assets.
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Power generation
Rotor insulation supervision in synchronous-generator excitation systems.
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Traceable identification
Complete product and revision codes help technicians match the intended spare without relying on appearance alone.
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Hydroelectric plants
Protection service for generator field circuits during planned outages.
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Protection engineering focus
Relay functions integrate with documented alarm, trip and commissioning procedures.
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Thermal power stations
Ground-fault relay replacement in established UNITROL 5000 installations.
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Global service documentation
Product records and system references support planning across long-lived generating equipment.
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Industrial generation
Lifecycle maintenance for captive and utility-scale generator excitation assets.
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Product references
| ABB |
| PM864AK01 |
PM866AK01 |
PM891K01 |
CI854AK01 |
| CI867K01 |
AI810 |
AO810 |
DI810 |
| DO810 |
TU810V1 |
TU830V1 |
SD831 |
| SS832 |
EI803F |
FI830F |
SA811F |
| CI801 |
CI840A |
AI845 |
DO880 |
| Bachmann |
| MX213 |
MX220 |
MC210 |
MC212 |
| DI232 |
DO232 |
AI204 |
AI208 |
| AO202 |
DIO248 |
NT255 |
FS212 |
| PTAI216 |
AIO288 |
CNT204 |
RS204 |
| EM213 |
MIO106 |
MPC270 |
SCT202 |
| 04 · SERVICE & POLICY |
QUOTATION SUPPORT |
| Quote |
Disclaimer |
|
IDENTIFY
Provide HIEE205010R0003 UNS3020A-Z V3, the installed UNITROL 5000 configuration and required quantity. Include a clear nameplate photo, cabinet position and existing wiring reference so the hardware execution can be checked before quotation.
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INDEPENDENT SUPPLY
This website is not affiliated with, endorsed by, or authorized by any of the listed manufacturers or trademarks. Ewolomodule is not an authorized distributor, dealer, or representative of the products displayed on this website.
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VERIFY
Confirm the V3 revision, terminal layout, protection setting record, alarm and trip interfaces, grounding arrangement and current relay condition before replacement planning.
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TRADEMARK OWNERSHIP
All product names, trademarks, brands, and logos used on this website are the property of their respective owners.
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QUOTE & DELIVERY
State the delivery destination, required date and preferred transport method. Availability, condition, warranty, lead time, protective packing and shipping terms will be checked before quotation, together with any documentation required for the planned outage.
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IDENTIFICATION PURPOSE
The description, explanation, or sale of products with these names, trademarks, brands, and logos is for identification purposes only and is not intended to indicate any association with or authorization from any rights holder.
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