Product Core Brief
- Model: ER22020/T
- Brand: Emerson (now Vertiv)
- Series: ER Series Rectifier Modules
- Core Function: Provides high-power DC output for charging battery banks and supplying DC loads in industrial and power systems.
- Product Type: High-Frequency Switching Charging Module
- Key Specs: 220V DC Output | 20A Rated Current | Three-Phase Input | Hot-Swappable
- Condition: New Original / New Surplus
Product Introduction
The EMERSON /T is a high-power, high-frequency switching rectifier module designed for critical 220V DC power systems. Originally manufactured by Emerson Network Power (now part of Vertiv), this module is a core component in DC panels (直流屏) used across substations, power plants, and heavy industrial facilities.
Engineered with advanced phase-shifted resonant soft-switching technology, the /T delivers high efficiency (≥92%) and excellent electromagnetic compatibility. It features an active Power Factor Correction (PFC) circuit, achieving a power factor of up to 0.99. The module utilizes a built-in CPU for decentralized control and communicates via a CAN bus, allowing seamless integration with system monitors for remote telemetry and control. Its hot-swappable design ensures continuous system operation during maintenance or replacement.
EMERSON 9199-00002 A6120
Key Technical Specifications
- Module Type: High-Frequency Charging/Rectifier Module
- AC Input: 323V ~ 475V (Three-Phase, 3-Wire + PE), 45-65Hz
- DC Output Voltage: 176V ~ 320V DC (Nominal 220V DC)
- Rated Output Current: 20A (Max 22A)
- Efficiency: ≥ 92%
- Power Factor: ≥ 0.99
- Cooling: Intelligent Air Cooling (Temperature and current-based fan speed control)
- Communication: CAN Bus
- Dimensions (H x W x D): ~242mm x 88mm x 388mm
- Weight: ~8 kg
- Operating Temperature: -40°C to +65°C
Quality Control Process (Engineer’s Perspective)
- Incoming Verification: Verify part number . Inspect the front panel LED indicators, fan grill, and rear Euro-connector pins for physical damage or debris.
- Visual Inspection: Check the internal PCB (if visible) for corrosion, blown components, or excessive dust. Ensure the cooling fan spins freely.
- Live Functional Test: Install in a compatible DC panel chassis. Apply 3-phase AC power and verify the module powers up, the “Run” LED illuminates, and the output voltage stabilizes.
- Load & Communication Test: Verify CAN bus communication with the system monitor. Test output current capability under load and verify intelligent fan speed adjustment.
- Final QC & Packaging: Seal in an anti-static bag. Apply a QC Passed label with the date.
Replacement Pitfall Guide
❗ Brand Transition: Emerson Network Power’s power business is now Vertiv. The /T is fully compatible under both brand names. Ensure your procurement or documentation reflects this transition if necessary.
❗ Hot-Swap Safety: While the module supports hot-swapping, always wear appropriate PPE and follow site safety protocols when handling live DC equipment. Never hot-swap in a flammable or explosive environment.
❗ Airflow Requirements: This module relies on front-to-back forced air cooling. When installing in a rack, ensure there are no obstructions to the air intake (front) or exhaust (rear). Blocked airflow will trigger an over-temperature protection shutdown.
❗ Phase Loss Protection: The module features a unique phase-loss protection design. If one AC phase is lost, the module will automatically limit its output to half-load (10A) rather than shutting down completely. Verify your 3-phase input is balanced and stable.
❗ System Monitor Compatibility: The module communicates via CAN bus. Ensure the system monitor (e.g., UtilitySure series) is configured to recognize the /T to properly manage float/boost charging and read fault codes (e.g., E32 for Over-Temp, E38 for Fan Fault).
Keep these in mind and you’ll cut 90% of rework time.
EMERSON 9199-00002 A6120
Compatibility Matrix & Benchmarks
- → ER22010/T : Alternative — Use ER22010/T if a 10A output rating is sufficient for your application.
- → ER11040T5 : Alternative — Use ER11040T5 if your system requires a 110V DC / 40A output configuration.
- → HD22020-3 / HD22020-2 : Related — Older or variant Emerson 220V/20A module series (verify mechanical dimensions and CAN protocol before cross-substitution).
- → UtilitySure Monitor : Complementary — Requires a compatible system monitor for centralized control and alarm management.
Benchmarks:
- Output Precision: Voltage/Current regulation ≤ ±0.5%
- Ripple Coefficient: ≤ 0.1%
- MTBF: > 300,000 Hours
Need me to pull up the matching System Monitor Module or the 10A variant (ER22010/T) for your DC panel setup? Let me know which one you’d like.
