Overview
Manuals
CTVT Inputs
Relay Compatibility
Protection Commissioning
Features:
- 8M option provides sensitive-ground 4 CT / 4 VT inputs.
- Enhanced diagnostics support current and voltage input supervision.
- Designed for compatible GE Multilin Universal Relay platforms.
UR8MH conditions current-transformer and voltage-transformer secondary signals for the relay protection and measurement functions. The host relay provides the configured protection logic; the module supplies the analog CT/VT interface.
Before replacement, save the relay settings file and record the complete relay order code, slot, firmware, CT/VT ratios, nominal frequency, grounding and terminal wiring. After installation, verify measurements, phase sequence, ground channel and protection-element operation.
The GE Multilin UR8MH Sensitive-Ground CT/VT Module is listed as Active / Available from OEM. Current revision, availability and supplied scope are confirmed in the written quotation.
GE Vernova Multilin Universal Relay Ordering Data, Link
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
The 8M option contains four CT inputs and four VT inputs with a sensitive-ground configuration and enhanced diagnostics. Confirm which physical channel is assigned to the ground-current circuit in the installed relay.
Match CT secondary current, VT secondary voltage, frequency, phase rotation, grounding and terminal assignment to the approved protection drawing.
UR module compatibility depends on the exact relay family, chassis generation, slot, firmware and complete order code. Verify the relay model and hardware option table before installation.
Do not substitute 8L, 8M, 8N, 8R or earlier 8G/8H/8J/8K modules without a documented protection-engineering review.
Save the complete relay settings and retrieve oscillography or metering references before work. Observe CT-secondary safety and site isolation procedures.
After replacement, verify all current and voltage channels, phase sequence, sensitive-ground response, diagnostics, metering and every affected protection element using approved secondary-injection tests.
