Description
The GE UR6DH is a Digital Input Module belonging to the Multilin UR (Universal Relay) series. It is a plug-and-play hardware component that expands the monitoring capabilities of protective relays (such as the L60, B30, or G60), allowing the system to track the status of auxiliary equipment like breakers, switches, and alarms.
Product Parameters (Datasheet)
- Model Number: UR6DH
- Series: Multilin UR (Universal Relays)
- Input Channels: 16 Digital Inputs (Contact Inputs)
- Contact Type: Form-C (Changeover) contacts only
- Module Slot: Designed for I/O slots in the 19-inch UR rack or 3/4 vertical rack
- Voltage Sensing: Typically supports a wide range (e.g., 24V DC to 250V DC) depending on specific order codes
- Activation Speed: Standard (Form-C contacts are generally slower than Form-A/Fast Form-C cards)
- Software: Configuration via EnerVista UR Setup software
- Dimensions: Approx. 6”L x 7”W x 1.5”H
- Weight: ~2.5 lbs
GE UR6DH
GE UR6DH
GE UR6DH
Country of Origin
This module is engineered and manufactured by GE Multilin in Markham, Ontario, Canada.
Application Fields
The UR6DH is used wherever high-density digital monitoring is required in power systems:
- Substation Automation: Monitoring the “Open/Closed” status of high-voltage circuit breakers and disconnect switches.
- Generator Protection: Interfacing with auxiliary contacts from turbine control systems and cooling systems.
- Transformer Monitoring: Tracking Buchholz relay trips, oil temperature alarms, and pressure relief valve states.
- Busbar Protection: Collecting status data for bus differential schemes (e.g., in the B30 relay).
- Industrial Plants: Integrating motor starter statuses and emergency stop signals into the protection logic.
Product Usage Instructions
- Installation: Power down the UR relay. Open the front faceplate and slide the UR6DH module into the designated I/O slot (e.g., Slot F or G). Ensure the module pins align correctly with the backplane.
- Field Wiring: Land your digital input wires on the terminal block at the rear of the module. Since this module uses Form-C contacts, ensure you are wiring to the correct Common (C) and Normally Open (NO) or Normally Closed (NC) terminals as required by your logic.
- Software Mapping: Open EnerVista UR Setup. Under the “Hardware Configuration” menu, verify the module is recognized in its specific slot.
- Logic Programming: Assign the physical inputs to internal logic variables (e.g., Virtual Outputs or FlexLogic operands) to trigger protection actions or SOE (Sequence of Events) recording.
- Threshold Setting: Configure the “Pickup” and “Dropout” voltage thresholds in the software to ensure the module correctly distinguishes between a “High” signal and electrical noise.
Product Technical Description
The UR6DH provides a high-density interface for Sequence of Events (SOE) recording. Unlike standard PLC inputs, these inputs are designed for the high-noise environment of an electrical substation, featuring robust isolation and filtering. Because the UR6DH uses Form-C contacts, it provides both a normally open and normally closed path for each output if used in a control capacity, though its primary function in the 6D configuration is 16 inputs. The module communicates with the UR’s central CPU over a high-speed internal bus, ensuring that status changes are timestamped with sub-millisecond accuracy for forensic fault analysis.
Q&A (Common Questions)
- Q: Can I use this for high-speed tripping?
- A: While reliable, the Form-C contacts in the UR6DH are generally not as fast as “Fast Form-C” or “Form-A” solid-state cards. For high-speed tripping, consider modules like the UR6L or UR6M.
- Q: Is the module hot-swappable?
- A: No. You should always de-energize the relay before removing or inserting hardware modules to prevent damage to the backplane or CPU.
- Q: What is the benefit of the “6D” designation?
- A: The “6D” refers to the specific hardware layout of 16 digital inputs, which is one of the highest densities available for the UR series, saving valuable rack space.
- Q: Why are my inputs not registering in the software?
- A: Check the “Contact Input Threshold” settings. If the field voltage is lower than the programmed pickup voltage, the relay will ignore the signal.
Similar Model Recommendations
- GE UR6L: Digital I/O module with 8 Inputs and 8 Form-A Outputs.
- GE UR6C: Digital I/O module with 8 Inputs and 8 Form-C Outputs.
- GE UR6G: 16 Digital Inputs with “Fast” sensing capabilities.
- GE UR4L: Combined CT/VT and Digital I/O module.
- GE UR10H: High-density input module for newer UR Plus units.
For technical documentation or to request a quote for the GE UR6DH, please contact our protection and control specialists.
