Sigenergy SigenStor Energy Controller EC 3.0–12.0 kW — Single Phase
Key features: EMS built-in for precise control · Up to 4 MPPT trackers · Multi-source black start · On-grid & off-grid compatible · DC/AC ratio up to 2 · IP66 system protection
Model lineup
EC 3.0SP / 3.6SP / 4.0SP / 4.6SP / 5.0SP / 6.0SP / 8.0SP / 10.0SP / 12.0SP
DC Input (from PV)

+---------------------+-------+-------+-------+-------+-------+-------+-------+--------+--------+
| Spec                | 3.0SP | 3.6SP | 4.0SP | 4.6SP | 5.0SP | 6.0SP | 8.0SP | 10.0SP | 12.0SP |
+---------------------+-------+-------+-------+-------+-------+-------+-------+--------+--------+
| Max. PV power (W)   | 6000  | 7360  | 8000  | 9200  | 10000 | 12000 | 16000 | 20000  | 24000  |
+---------------------+-------+-------+-------+-------+-------+-------+-------+--------+--------+
| No. of MPP trackers | 2     | 2     | 2     | 2     | 2     | 2     | 3     | 4      | 4      |
+---------------------+-------+-------+-------+-------+-------+-------+-------+--------+--------+

• Max. DC input voltage: 600 V
• Nominal DC input voltage: 350 V
• Start-up voltage: 100 V
• MPPT voltage range: 50–550 V
• No. of PV strings per MPPT: 1
• Max. input current per MPPT: 16 A
• Max. short-circuit current per MPPT: 20 A
(Note: MPPT tracker count above is inferred from the grouped source values "2 3 4 4" — worth confirming exact per-model split with a Sigenergy datasheet/distributor if it matters for design.)
AC Output — On-Grid

+----------------------------+-------+-------+-------+-------+-------+-------+-------+--------+--------+
| Spec                       | 3.0SP | 3.6SP | 4.0SP | 4.6SP | 5.0SP | 6.0SP | 8.0SP | 10.0SP | 12.0SP |
+----------------------------+-------+-------+-------+-------+-------+-------+-------+--------+--------+
| Nominal output power (W)   | 3000  | 3680  | 4000  | 4600  | 5000  | 6000  | 8000  | 10000  | 12000  |
+----------------------------+-------+-------+-------+-------+-------+-------+-------+--------+--------+
| Max. apparent power (VA)   | 3300  | 3680  | 4400  | 5000  | 5500  | 6600  | 8800  | 11000  | 12000  |
+----------------------------+-------+-------+-------+-------+-------+-------+-------+--------+--------+
| Nominal output current (A) | 13.6  | 16.0  | 18.2  | 20.9  | 22.7  | 27.3  | 36.4  | 45.5   | 54.6   |
+----------------------------+-------+-------+-------+-------+-------+-------+-------+--------+--------+
| Max. output current (A)    | 15.0  | 16.0  | 20.0  | 22.7  | 25.0  | 30.0  | 40.0  | 50.0   | 54.6   |
+----------------------------+-------+-------+-------+-------+-------+-------+-------+--------+--------+
| Max. efficiency (%)        | 98.0  | 98.0  | 98.0  | 98.0  | 98.0  | 98.0  | 97.6  | 97.6   | 97.6   |
+----------------------------+-------+-------+-------+-------+-------+-------+-------+--------+--------+
| European weighted eff. (%) | 97.0  | 97.1  | 97.2  | 97.3  | 97.4  | 97.4  | 97.0  | 97.0   | 97.0   |
+----------------------------+-------+-------+-------+-------+-------+-------+-------+--------+--------+

• Nominal output voltage: 220/230/240 V (smaller models) / 220/230 V (higher-power models)
• Nominal grid frequency: 50/60 Hz
• Power factor: 0.8 leading … 0.8 lagging
• Total current harmonic distortion (THDi): < 2%
AC Output — Backup (Off-Grid)

+-------------------------------+-------+-------+-------+-------+-------+-------+-------+--------+--------+
| Spec                          | 3.0SP | 3.6SP | 4.0SP | 4.6SP | 5.0SP | 6.0SP | 8.0SP | 10.0SP | 12.0SP |
+-------------------------------+-------+-------+-------+-------+-------+-------+-------+--------+--------+
| Peak output power, 10 sec (W) | 4500  | 5520  | 6000  | 6900  | 7500  | 9000  | 12000 | 15000  | 15000  |
+-------------------------------+-------+-------+-------+-------+-------+-------+-------+--------+--------+

• Nominal output voltage: 220/230/240 V / 220/230 V
• Nominal output frequency: 50/60 Hz
• Power factor: 0.8 leading … 0.8 lagging
• Total voltage harmonic distortion (THDv): < 2%
• Disruption time of backup switch²: 20 ms
Battery Connection
• Compatible battery modules: SigenStor BAT 5.0 / BAT 8.0
• No. of modules per controller: 1–6 pcs
• Battery module voltage range: 300–600 V
Protection
Safety features: DC reverse polarity protection · Insulation monitoring · Residual current monitoring · Arc fault circuit interrupter³ · AC overcurrent/overvoltage/short-circuit protection · Type II DC/AC surge protection · Anti-islanding protection
General Data

+--------------------+--------------------+--------------------+
| Spec               | 3.0–6.0 SP         | 8.0–12.0 SP        |
+--------------------+--------------------+--------------------+
| Dimensions (W/H/D) | 700 × 300 × 245 mm | 700 × 300 × 260 mm |
+--------------------+--------------------+--------------------+
| Weight             | 18 kg              | 36 kg              |
+--------------------+--------------------+--------------------+

• Storage temperature range: –40°C to 70°C
• Operating temperature range: –30°C to 60°C
• Relative humidity range: 0%–95%
• Max. operating altitude: 4,000 m
• Cooling: Natural convection (smaller units) / Smart air cooling (larger units)
• System ingress protection rating: IP66
• Communication: WLAN / Fast Ethernet / RS485 / Sigen CommMod (4G/3G/2G)
Standards Compliance
IEC/EN 62109-1, IEC/EN 62109-2, IEC/EN 62477, IEC/EN 61000-6-1, IEC/EN 61000-6-2
Footnotes (from source document)
1. Availability may vary by region — contact Sigenergy or local distributors for details.
2. Backup switch disruption time refers to load-side disruption; requires Sigen Energy Gateway used together with Sigen Energy Controller and Sigen Battery. Test condition: in grid open-circuit state, nominal power of the controller exceeds total home load power.
3. Arc fault circuit interrupter is an optional feature, supported only on certain models — contact Sigenergy for details.
4. (Standard compliance footnote reference was truncated in the source text.)