50 kW Dual-feed Load Bank for 2N Redundancy ATS/STS Testing
DLB Series is an intelligent, rack-mounted dual-source AC load bank engineered for the 2N power redundancy validation of critical IT infrastructure. Featuring independent A+B channel control, it precisely simulates dual-feed hardware loads to safely verify automatic transfer switches (ATS) and static transfer switches (STS) without risking live facility downtime.
A+B Dual-source Input Capabilities (新加入)
2N Redundancy Performance Verification (新加入)
Independent Control for Channel A & B (新加入)
Seamless ATS / STS Switching Test Support (新加入)
10kW to 50kW Scalable Power Capacity
Standard 19-inch 4U to 9U Compact Profile
Programmable Control for Multi-unit Cascading
Advanced Over-current & Thermal Protection
DLB Series: Dual-Source Load Bank for 2N Redundancy Testing
Independent A+B channel control with Partial Load Transfer — purpose-built for dual UPS system validation, 2N redundancy commissioning, and critical power infrastructure testing.
Why DLB
The specialist tool for dual-supply critical power systems
A+B Independent Channels
Two fully isolated power input channels mirror real 2N redundant infrastructure — test both feeds simultaneously.
Partial Load Transfer
Simulate 50%, 75%, or custom load shift between channels — validates seamless switchover without service interruption.
Manual & Auto Mode
Switch between operator-driven manual testing and PLC-timed automated commissioning sequences.
PLC Precision Control
Industrial-grade PLC ensures microsecond-accurate load stepping and transfer timing for repeatable results.
2N Critical Facilities
The standard choice for Tier III/IV data center commissioning where dual-path resilience must be proven before go-live.
Technical Specifications
Select a model to view its detailed parameters
| Parameter | Value |
|---|---|
| Rated Power | 10 kW (dual-channel) |
| Load Type | Resistive, 1% step |
| Rated Voltage | 400 V AC 3-phase 4-wire |
| Frequency | 50 / 60 Hz (optional) |
| Power Factor / THD | PF > 0.99 | THD < 3% |
| Cooling Method | Forced air cooling |
| Noise Level | < 60 dB(A) at 1 m |
| Control Interface | TCP/IP + Modbus RTU + PLC HMI |
| Paralleling | Expandable (multiple units) |
| Protection Rating | IP20 / IP21 |
| Operating Temperature | 0 °C – 45 °C |
| Certifications | IEC 60947-1, CE (standard) / UL (optional) |
| Form Factor | 19-inch rack-mount (2–3U) |
| Special Features | A+B dual channel, Partial Load Transfer, manual / auto mode |
| Rated Power | 30 kW (dual-channel) |
| Load Type | Resistive, 1% step |
| Rated Voltage | 400 V AC 3-phase 4-wire |
| Frequency | 50 / 60 Hz (optional) |
| Power Factor / THD | PF > 0.99 | THD < 3% |
| Cooling Method | Forced air cooling |
| Noise Level | < 65 dB(A) at 1 m |
| Control Interface | TCP/IP + Modbus RTU + PLC HMI |
| Paralleling | Expandable (multiple units) |
| Protection Rating | IP20 / IP21 |
| Operating Temperature | 0 °C – 45 °C |
| Certifications | IEC 60947-1, CE (standard) / UL (optional) |
| Form Factor | 19-inch rack-mount (3U) |
| Special Features | A+B dual channel, Partial Load Transfer, manual / auto mode |
| Rated Power | 50 kW (dual-channel) |
| Load Type | Resistive, 1% step |
| Rated Voltage | 400 V AC 3-phase 4-wire |
| Frequency | 50 / 60 Hz (optional) |
| Power Factor / THD | PF > 0.99 | THD < 3% |
| Cooling Method | Forced air cooling |
| Noise Level | < 65 dB(A) at 1 m |
| Control Interface | TCP/IP + Modbus RTU + PLC HMI |
| Paralleling | Expandable (multiple units) |
| Protection Rating | IP20 / IP21 |
| Operating Temperature | 0 °C – 45 °C |
| Certifications | IEC 60947-1, IEC 60947-4-1, CE (standard) |
| Form Factor | 19-inch rack-mount (3–4U) |
| Special Features | A+B dual channel, Partial Load Transfer, manual / auto mode |
Applications
Where the DLB series delivers proven results
Dual UPS System Testing
Apply simultaneous load to both UPS units — verify runtime, transfer time, and battery performance under real-world dual-feed conditions.
2N Redundancy Commissioning
Prove that Tier III/IV infrastructure handles full load on a single path before go-live — the industry-standard acceptance test for critical facilities.
Partial Load Transfer Simulation
Replicate maintenance bypass scenarios — shift 50% or 75% of load between A and B channels without interrupting the test sequence.
Certifications
Compliance you can count on
CE Marked
Standard
UL Listed
Optional
IEC 60947-1
International Standard
IEC 60947-4-1
AC Contactors & Starters
Independent A+B Control for Real-world 2N Redundancy Verification
Multiple DLB units can be combined to scale total test capacity for larger facilities. Each unit maintains fully independent A and B channel isolation — adding units never compromises the dual-feed integrity that 2N testing demands.
Get Pricing & Technical Specs
Ready to discuss your data center commissioning needs? Our engineers are available to help with model selection and custom configurations.
