GE UR 6DH – Digital Input Module | UR Series Protection & Control Platform
Engineering Background
The GE UR Series (Universal Relay) is GE Grid Solutions’ flagship modular protection and control platform, widely deployed in transmission substations, generation facilities, and industrial switchgear worldwide. The platform’s slot-based architecture allows engineers to configure relay functionality precisely to application requirements — eliminating over-specification and reducing lifecycle cost.
Product Positioning
The UR 6DH is a 24-channel digital (binary) input module designed for the UR Series chassis. It captures external contact status — breaker auxiliary contacts, protection trip signals, interlock states, and supervisory inputs — and presents them to the relay’s logic engine in real time. The 6DH is the standard DI module of choice for high-density I/O applications where deterministic input scanning and IEC 61850 GOOSE integration are required.
Complete Technical Specifications
| Parameter | Specification |
|---|---|
| Part Number | UR 6DH |
| Module Type | Digital (Binary) Input Module |
| Platform | GE UR Series (Universal Relay) |
| Number of DI Channels | 24 channels |
| Input Voltage Range | 17–300 V DC / 20–265 V AC (wet contact); dry contact supported |
| Input Recognition Threshold | Programmable per channel (typical: 10 V DC) |
| Scan Rate | < 1 ms per channel (deterministic) |
| Isolation | Optical isolation, 2 kV channel-to-backplane |
| Communication Protocol | IEC 61850 GOOSE, DNP3, Modbus RTU/TCP |
| Form Factor | UR Series plug-in module (standard slot) |
| Operating Temperature | -40°C to +85°C |
| Humidity | 5–95% RH, non-condensing |
| Standards Compliance | IEC 61850, IEEE C37.90, UL 508, CE |
| Weight | ~2,000 g (module + packaging) |
| Country of Origin | USA / Canada (GE Grid Solutions) |
Proven Application Environments
- Transmission Substation Protection: Breaker failure, bus differential, and line distance schemes requiring high-density binary input capture.
- Generator Protection Panels: Monitoring auxiliary contacts from excitation systems, AVR interlocks, and turbine trip circuits.
- Industrial Switchgear: Motor protection and feeder management where IEC 61850 GOOSE peer-to-peer signaling replaces hardwired logic.
- Retrofit & Upgrade Projects: Drop-in replacement for legacy UR chassis slots, preserving existing wiring and relay configuration files.
Engineering Advantages
- High Channel Density: 24 DI channels per slot maximizes chassis utilization and reduces per-point cost versus discrete relay I/O cards.
- Deterministic Scanning: Sub-millisecond input recognition ensures accurate sequence-of-events (SOE) recording and fault analysis.
- Wide Voltage Tolerance: Accepts 17–300 V DC and 20–265 V AC inputs without jumper changes — compatible with virtually all substation battery systems (24 V, 48 V, 110 V, 125 V, 220 V DC).
- IEC 61850 Native: GOOSE publishing of all DI states eliminates copper wiring between IEDs, reducing installation cost and improving reliability.
- Hot-Swap Capable: Module can be replaced under power in UR chassis with redundant power supply, minimizing maintenance downtime.
- Backward Compatible: Fully compatible with all UR Series chassis generations (UR-7xx, UR-8xx, UR-9xx firmware families).
System Architecture & Signal Flow
The 6DH module occupies a standard I/O slot in the UR Series chassis backplane. External field contacts wire to the module’s terminal block. The module’s optical isolators convert field-level voltages to logic-level signals, which are scanned by the module’s local FPGA at <1 ms intervals. Scanned states are transferred over the chassis backplane to the UR CPU module, where they are available to:
- Protection logic elements (FlexLogic operands)
- IEC 61850 GOOSE datasets for peer IED communication
- DNP3 / Modbus data maps for SCADA polling
- SOE recorder with 1 ms time-stamp resolution (IRIG-B or IEEE 1588 synchronized)
No external signal conditioning or marshalling panels are required. All channel parameters (threshold voltage, debounce time, inversion) are configured via EnerVista UR Setup software.
Sourcing & Quality Verification
- Source: Konmask.com sources UR 6DH modules from authorized GE Grid Solutions distributors and verified secondary-market channels with full traceability documentation.
- Inspection: Each unit undergoes visual inspection, label verification (GE part number, date code, revision), and functional power-on check prior to shipment.
- Packaging: Shipped in ESD-safe anti-static bags with foam-lined cartons. Original GE packaging preserved where available.
- Documentation: GE instruction manual reference (GEK-113500 series) and firmware compatibility matrix available upon request.
- Warranty: 12-month Konmask.com warranty covering manufacturing defects and DOA units.
Procurement Process
- Confirm Compatibility: Verify your UR chassis model and firmware version. Contact support@konmask.com with your chassis nameplate data if unsure.
- Request Quote: For orders of 2+ units or urgent delivery requirements, email support@konmask.com or call +0086 19859288691 for priority pricing.
- Place Order: Add to cart and complete checkout. HKD pricing shown; multi-currency checkout available at konmask.com.
- Lead Time: In-stock units ship within 1–3 business days. ETA confirmation provided by email after order placement.
- Export & Customs: Export documentation (commercial invoice, packing list, HS code 8537.10) provided for all international shipments.
Technical FAQ
Q: Is the UR 6DH compatible with the UR D60 / T60 / L90 relay?
A: Yes. The 6DH is a universal I/O module compatible with all UR Series relay types that support the standard I/O slot architecture. Confirm slot availability in your chassis order code.
Q: Can the 6DH accept dry (volt-free) contacts?
A: Yes, when the UR chassis provides a wetting voltage to the field terminals. Consult the UR hardware manual for wetting voltage configuration per slot.
Q: What firmware version is required?
A: The 6DH is supported from UR firmware 7.0x onward. Contact Konmask for firmware compatibility confirmation for your specific relay model.
Q: Can I mix 6DH and analog input modules in the same chassis?
A: Yes. The UR chassis supports mixed I/O module types across slots. Slot assignment is configured in EnerVista UR Setup.
Q: Do you provide a test report or calibration certificate?
A: Functional test records are available upon request for critical infrastructure procurement. Contact support@konmask.com.
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Contact: support@konmask.com | +0086 19859288691
