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GE Multilin UR8NH CT/VT Module

The GE Multilin UR8NH is a high-density, field-swappable analog measurement module designed to expand or repair the data-acquisition capabilities of the GE Multilin UR Series (Universal Relay) protection platforms.Engineered to translate hazardous high-voltage grid currents down to safe processing levels, the UR8NH card introduces eight independent, highly accurate current transformer (CT) analog input channels directly into the relay’s computing backplane.

System modularity is a massive benefit of the UR series frame. Hardware technicians can quickly mount, upgrade, or replace individual UR8NH modules within the modular chassis slots without forcing a complete replacement of the core central processing unit or communication network cards.This hot-swappable design drastically cuts diagnostic maintenance windows and eliminates long wiring tasks when expanding older substation frames.

Data sampling is managed by a high-speed onboard measurement pipeline that works alongside the Universal Relay’s diagnostic architecture.The module features integrated Advanced Health Diagnostics that run automated test sweeps at startup and continuous circuit checks during active operation.By catching internal transformer faults or broken wire signals immediately, it prevents false circuit-breaker tripping and keeps industrial plants operating smoothly.

• Dual-Rating Input Flexibility: Accommodates both 1 A and 5 A secondary current transformer ratios within the same hardware footprint, streamlining replacement parts inventory.

• Continuous Isolation Diagnostics: The built-in protection integrity engine scans input circuitry constantly to alert control rooms of potential degradation before a critical failure occurs.

• Sub-Millisecond System Trip Execution: Feeds digitized analog wave data directly into the central relay core, supporting protection algorithms with trip response times below 1 millisecond.

• Scalable Power Grid Monitoring: Multiple units can be configured side-by-side in a single UR rack to manage complex, multi-feeder power setups seamlessly.

• True Drop-In Field Upgrades: Easily slides into existing universal relay slots with straightforward terminal configurations, removing the need for a complete system redesign.

• Substation Feeder Protection: Provides precise current inputs for overcurrent, undercurrent, and directional ground-fault protection loops inside power grids.

• Large Motor & Generator Monitoring: Captures phase current data to safeguard high-horsepower industrial motors against thermal overload and phase unbalance.

• Transformer Differential Protection: Delivers reliable multi-channel current data to compare power ratios across main power distribution transformers.

• Industrial Switchgear Management: Acts as the primary analog processing gateway for SCADA platforms monitoring main factory breakers and power feeds.

 Hardware Parameter  Technical Value / Operational Range

 Base Module Code  UR8NH / UR-8NH Module

 Secondary CT Ratings  Supports 1 Ampere and 5 Ampere signal parameters

 Total Channel Capacity  8 Standard Current Transformer (CT) Analog Inputs

 Data Measurement Error  Within +/- 0.5% across the entire measurement curve

 Protective Response Time Latency under 1 millisecond total path

 Local Synchronization  Integrated 45 Hz to 60 Hz line matching system

 Physical Dimensions  11.02" x 8.42" x 0.67" (28cm x 21.4cm x 1.7cm)nt Matrix

Q: Can a single UR8NH module handle 1 A and 5 A current loops at the same time?

A: Yes. The input channels are designed to handle both standard signal types, and each input path can be easily adjusted using the EnerVista setup tool to match your current transformer requirements.

Q: What happens if an input wire breaks while the system is monitoring live power lines?

A: The module’s built-in health diagnostics instantly spot an open-circuit fault. It sends an error code to the front LCD panel and the central control room, blocking false breaker trips and warning operators right away.

Q: Can I use this card to replace older CT/VT modules in early-generation Universal Relays?

A: Yes. The modular design of the UR series ensures long-term compatibility, allowing you to use this modern module to upgrade older setups or replace older card versions smoothly.

Q: Does this analog card support both 50 Hz and 60 Hz grid frequencies?

A: Yes. The module features automatic line tracking that adapts seamlessly to both 50 Hz and 60 Hz electrical grids, making it suitable for worldwide power configurations.

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.