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Enersine APF measures and monitors the entire load current through external auxiliary coupling current sensing transformers (CT) mounted on the AC line, removes the fundamental frequency component and injects opposite phase harmonic current to cancel harmonic current in the electrical distribution system.
Like all Enersine APF Series, the compensation power electronics are packed in compact enclosed modules with forced air cooling designed for wall-mount installations where space is at a premium and harmonic mitigation current is high.
These ESP-34W power modules (PM) each 35ARMS, 60ARMS, 80ARMS, 90ARMS, 100ARMS rated and extendable, can be easily installed in small and confined areas, as well as the required “out of reach” locations. Each power module is fully HMI integrated with a built-in controller capable of compensating harmonics and phase displacements independently. Remote monitoring using building management system (BMS) via Modbus over RS485 RTU or Ethernet interface is available. Commissioning and maintenance can be easily performed with a laptop and Ethernet port.
High-density design allows these modules to be connected in parallel to achieve higher compensation power. This is particularly useful when considering future expansion or changes to the electrical networks which increases harmonic levels and requiring greater harmonic mitigation current.
Model | ESP34W-35 | ESP34W-60 | ESP34W-80 | ESP34W-90 | ESP34W-100 |
Maximum Compensating Current Per Phase | 35ARMS (per power module) | 60ARMS (per power module) | 80ARMS (per power module) | 90ARMS (per power module) | 100ARMS (per power module) |
Maximum Neutral Compensating Current | 3 times of Phase Current (400V version only) | ||||
Maximum Scalable Current Per Phase | 35ARMS | 480ARMS | 640ARMS | 720ARMS | 800ARMS |
Input Voltage Range | (i) 400V +15%, -20%, (ii) 480V +10%, -20% | (i) 208V +15%, -20%; (ii) 400V +15%, -20% (iii) 440V +15%, -20%; (iv) 480V +10%, -20% | |||
Phases/Wires | 3 phase 3 wires or 4 wires selectable for 208V and 400V model 3 phase 3 wires only for 440V and 480V model | ||||
Nominal Frequency | 50/60Hz ± 5% (Auto Sensing) | ||||
Compensated Harmonic Orders | Global Mode: From 2nd to 51st order, including Even orders Selective Mode: Up to 30 orders simultaneously | ||||
Power Factor Correction (Reactive Current) | Power factor correction is programmable from 0.6 lagging to 0.6 leading | ||||
Load Balancing | Both phase to phase and phase to neutral | ||||
Programmable Filtering Mode | 1. Harmonic compensation only 2. Power Factor (Reactive Current) compensation only 3. Harmonic compensation priority + Power Factor compensation 4. Power Factor compensation priority + Harmonic compensation 5. Harmonic compensation priority + Power Factor compensation + Load Balancing | ||||
CT Ratio | Programmable Primary Current: 100A~10000A Programmable Secondary Current: 1A/5A | ||||
CT Location | CT at Source Side: Closed Loop Control CT at Load Side: Open Loop Control | ||||
Response Time | Harmonic Compensation <1ms, Reactive Current Injection <20ms | ||||
Inrush Current | Less than rated current | ||||
Current Limitation | Yes, at full correcting | ||||
Maximum Heat Losses | ≤5% at full capacity | ||||
Compensation Ratio | 10:1 typical | ||||
Power Electronics | 3-Level IGBT Technology with DSP control | ||||
Cooling | Forced air cooling with speed-controlled fans | ||||
Display | 7inch Colorful LCD Touch Screen | ||||
Interface | USB, Ethernet (TCP/IP), RS-485 (Modbus RTU Protocol), EPO, 3x Output Dry Contact and 1x Input Dry Contact | ||||
Type | Wall Mount | ||||
Power Module Dimension (WxDxH, mm) | 500 x 300 x 800mm (with HMI and built-in controller) | 500 x 286 x 775mm (with HMI and built-in controller) | |||
Weight (kg) | 47 | 51 | 58 | 59 | 60 |
Protection Index | IP31, other IP options available upon request | ||||
Noise Level | < 65 dBA | ||||
Environment | Indoor installation in clean environment up to 1000m altitude (higher altitudes with suitable derating) | ||||
Operating Temperature | 0°C to 40°C (up to 50°C with suitable derating) | ||||
Safety Standard | EN50178 | ||||
EMC Compliance | EN 55011 Class A1, EN 61000-3, EN 61000-4, EN 61000-6 | ||||
Reference Design Standard | EN60146 | ||||
* the current rating may be derated automatically depending on load conditions for ambient temperature higher than 40 degree C. |
Model Number | Max Compensating Current Per Phase | Max Scalable Current Per Phase | Input Voltage Range |
ESP34W-35 | 35ARMS | 35ARMS | (i) 400V +15%, -20%, (ii) 480V +10%, -20% |
ESP34W-60 | 60ARMS | 480ARMS | (i) 208V +15%, -20%; (ii) 400V +15%, -20%; (iii) 440V +15%, -20%; (iv) 480V +10%, -20% |
ESP34W-80 | 80ARMS | 640ARMS | (i) 208V +15%, -20%; (ii) 400V +15%, -20%; (iii) 440V +15%, -20%; (iv) 480V +10%, -20% |
ESP34W-90 | 90ARMS | 720ARMS | (i) 208V +15%, -20%; (ii) 400V +15%, -20%; (iii) 440V +15%, -20%; (iv) 480V +10%, -20% |
ESP34W-100 | 100ARMS | 800ARMS | (i) 208V +15%, -20%; (ii) 400V +15%, -20%; (iii) 440V +15%, -20%; (iv) 480V +10%, -20% |
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