Electrical specifications
1.1 Input characteristics
| input voltage | 120Vdc to 425Vdc (starting voltage greater than 160Vdc) |
| Rated input voltage | 340Vdc |
| MPPT, voltage range | 120Vdc to 340Vdc |
| Maximum input current | 17A |
| surge current | Meet the standard: EN/IEC61000-4-5 |
| MPPT accuracy | ≥99%@load≥400W |
| Anti-polar protection | Input polarity error, no damage |
| Enter the insurance | Positive and negative pole insur- ance |
| maximum input voltage | 450Vdc (power supply cannot be damaged) |
1.2 output characteristic
1.2.1 Output voltage current adjustment rate
| output voltage | +54.5Vdc |
Output voltage setting value | +54.5±0. 1Vdc |
| Output voltage adjusta- ble range | +42Vdc～+58Vdc |
| productiveness | ≥96%@340Vdc/40%~70% Load-54.5VDC |
| Source effect | ±0. 1% |
| Load effect | ±0.5% |
| Stability accuracy | ±0.6% |
| minimum current | 0A |
| rated current | 55A@-48VDC |
| Output limit current setting point | 0-62.5A |
| peak point current | 62.5A |
Temperature coefficient (1/ ) | ≤±0.02% |
| Battery life | 10ms |
Standby power consumpt- ion | ≤4W |
| Maximum capacitive load | 40000uF |
| Maximum number of para- llel machines | 31 |
Note: The deviation of the setting value of various adjustable voltage and the setting value of protection voltage should not be higher than ±0.1V.
1.2.2 Output ripple and noise
| performance index | crest value | remarks |
Ripple and noise (peak-to-peak) | 200mVp-p | Bandwidth is less than or equal to 20M |
Note: 1) Ripple and noise test: Ripple and noise bandwidth is set at 20 megahertz.
1.2.3 Output dynamic response
Voltage overshoot | Jumping slope | variation in load | recovery time | Output overshoot |
+54.5V |
0. 1A/uS | 25% to 50% load, 50% to 25% load, 50% to 75% load, 75% to 50% load |
≤200us |
≤±5% |
| +58V | 0.1A/uS |
0% to 100% load, 100% to 0% load | | No overvoltage is triggered protect |
Note: The load jump cycle is 4ms.
1.2.4 The output of the machine is out of control
| output voltage | variation in load | Output overshoot |
| +54.5V | Start overshoot | <1% |
1.2.5 available machine time
| project | 340Vdc@25℃ |
| Power on delay | 3S~8S |
Note: The time from power on to output voltage to 42Vdc.
1.2.6 Power conversion point
| input voltage | maximumoutput |
| 200Vdc～425Vdc | 3000W |
| 120Vdc～200Vdc | Linear reduction |
| 120Vdc | 1800W |
Note: When the pv input voltage is 340Vdc~425Vdc, the output power in this range is determined by the PV characteristics.
DC input derating curve
1.2.7 Output characteristics
Maximum output characteristic curve
1.2.8 Temperature reduction
| ambient temperature | maximumoutput |
| -40~50℃ | 3000W |
| 50～65℃ | Linear reduction |
| 65℃ | 2400W |
| 65～75℃ | Linear reduction |
| 75℃ | 1200W |
Ambient temperature derating curve
1.2.9 Noise voltage
| Noise voltage | crest value | remarks |
| Telephone weighing noise voltage | ≤2mV | |
Broadband noise volt- age | ≤50mV | 3.4～150KHz |
| ≤20mV | 150～30000KHz |
1.3 Defencive function
1.3.1 Output short circuit protection
+54.5V | It can be short circuit for a long time, and can be automatically restored after the short circuit disappears |
1.3.2 Overvoltage protection output
Overvoltage protection can be categorized into internal overvoltage and external overvoltage protection. Internal overvoltage faults range from 58.5VDC to 60.5 VDC, which can be monitored and set; when a fault occurs, the module will lock out. If the external voltage exceeds 63VDC and remains above this level for more than 500ms, the module will also lock out. Once the system enters the locked-out protection state, the PV power supply must be disconnected before the system can be re-powered to resume operation.
1.3.3 Output under-voltage warning
The range is 37VDC~39VDC. When it i s lower than the under-voltage alarm value, normal output is reported and an alarm is given.
1.3.4 Overvoltage protection input
| input voltage | remarks |
430±5Vdc | Output is turned off and can be self-recovered after the voltage is normal |
| Input recovery point deviation> 15V |
1.3.5 Input under-voltage protection
| input voltage | remarks |
110±5Vdc | Output is turned off and can be self-recovered after the voltage is normal |
| Input recovery point deviation> 40V |
1.3.6 Underpower protection
Underpower protection logic:
In normal operation, when the input power is less than 50W and lasts for 5 minutes, the under-power flag is set and the machine shuts down. Otherwise (that is, in the shutdown state), when the input voltage is greater than 160V and the bus voltage is greater than 150V for 5 minutes, the under-power flag is cleared and the module restarts.
Minimum module power: 50W
1.3.7 Overtemperature protection
| temperature | remarks |
| ≤50℃ | The module can output the maximum output power without overtemperature protection, and the module runs normally |
| 50℃~65℃ | Module power is reduced to 2400W linearly |
| 65℃~75℃ | Module power is reduced to 1200W |
| >75℃ | Shut down, and the self-recovery temperat- ure difference after shutdown is> 10 |
1.4 Communication function between rectifier module and monito- ring module
The CAN bus communication mode is adopted between the rectifier module and the monitoring module, which supports remote software version upgrade, and the address board can be used to set the address of the module. When the AC input is disconnected, the module needs to communicate with the host.
The CAN interface in the rectifier module needs to adopt an isolation design. The power supply of CAN is +5Vdc, which is provided by the internal rectifier module.
The main monitoring information of the rectifier module is:
1) Voltage regulation and current regulation function: meet the requirements of battery equal float charge, meet the voltage regula- tion requirements;
2) Single module on/off control;
3) Protection and alarm information feedback:
Municipal power failure: municipal power failure (over or under voltage of AC input);
Module protection: temperature warning;
Module fault: shutdown due to output overvoltage, fan failure, shutdown due to overheating or no output caused by other internal reasons of the module; (the module is in the sleep shutdown state, and the module fault is not reported due to mains failure).
1.5 LED indicator
The power LED indicator is installed on the side of the power panel, and the output status is shown in the following table.
Indicative signs |
Color of the indicator light |
normal state |
unusual state | Anomaly reason |
Power operation refers to Indicator light |
hispid arthraxon |
bright |
go out |
Photovoltaic input fault (no DC input, DC input over or under voltage), module no output. |
Protect the indicator light |
yellow |
go out |
bright | Temperature warning (environmental tempe- rature exceeds 65 ~ shutdown over temper- ature); Sleep shutdown (when the module is in sleep shutdown, only the protection indicator light is on and the module does not report alarm). Communication interruption (the pr- otection indicator light flashes) |
fault indicating lamp |
red |
go out |
bright | Output overvoltage shutdown, fan failure, overheating shutdown, no output caused by internal reasons of the module. |
