C&I
Tensorpack J is a two-cabinet C&I storage system built for the Japanese grid: a liquid-cooled DC battery cabinet paired with a dedicated AC cabinet. Rated at 49.9 kW and native 202 Vac, it connects under Japan’s low-voltage interconnection regime — keeping grid procedures simple for commercial sites, EV-charging stations and multi-site rollouts.
What a Tensorpack J installation looks like on site.
Main circuit and grid connection.
The PCS outputs AC202 V, so no step-down transformer is required.
Every design decision follows one goal: make storage simple to permit, install and operate in Japan.
Rated under 50 kW, so systems connect within Japan’s low-voltage interconnection framework — a faster, simpler grid procedure.
The PCS outputs AC202 V straight onto the Japanese low-voltage grid — 3P3W / 3P4W, 50/60 Hz. No down-transformer, no extra enclosure, no extra loss.
About 60 dB in operation — suitable for urban sites and locations next to residential areas.
SUS304 stainless steel cabinets as standard, SUS316L on request — IP55 cabinet and IP66 packs for coastal and high-humidity sites.
A pre-wired DIN rail inside the AC cabinet takes a locally sourced Japanese EMS — sized for the OPK20-55A enclosure, power supply included.
5-year full-system warranty as standard, extendable to 15 years through Teplore.
Tensorpack J — 202 V, liquid-cooled battery, warranty up to 15 years, outdoor cabinets. Certified for the Japanese market.
AC-coupled — a grid-tied PCS for storage-only systems. Off-grid operation is possible but requires an added controller.
| Model | Rated power | Energy |
|---|---|---|
| Tensorpack J-B208-G49.9 | 49.9 kW | 208 kWh |
| Rated energy | 208 kWh |
|---|---|
| Rated AC power | 49.9 kW |
| Rated AC voltage | AC202 V ±15% |
| Rated frequency | 50 / 60 Hz |
| Connection type | 3P3W / 3P4W |
| Cell type | LFP 314 Ah |
| Configuration | 1P208S |
| Rated DC voltage | 665.6 V |
| DC voltage range | 582 – 748.8 V |
| Charge / discharge rate | 0.5P |
| Depth of discharge | 100% |
| Max. overall efficiency | 91% |
| Current THD | ≤ 3% |
| Power factor | −1 – −0.8 / 0.8 – 1 |
| Auxiliary transformer | AC202 V / 400 V, built in |
| EMS integration | DIN rail for Japanese EMS (OPK20-55A) |
| DC cabinet (W×D×H) | 950 × 1350 × 2000 mm |
|---|---|
| AC cabinet (W×D×H) | 850 × 1350 × 1200 mm |
| DC cabinet weight | ≈2385 kg |
| AC cabinet weight | ≈470 kg |
| Ingress protection | IP55 cabinet / IP66 pack |
| Cooling | Liquid-cooled (battery) |
| Enclosure material | Stainless steel SUS304 (SUS316L option) |
| Operating temperature | −30 °C ~ +55 °C |
| Altitude | < 3000 m |
| Noise level | ≈60 dB |
| Cycle life | 8,000 @ 100% DoD, 25±5 °C, 0.25C |
| System warranty | 5 years standard, extendable to 15 years |
| Performance warranty | 10 years / 8,000 cycles |
Product & safety certification for the Japanese market.
Certified for the Japanese grid — inverter / PCS interconnection compliance.
From the cell to the cabinet, multiple independent systems watch, isolate and contain faults — backed by international product and environmental certification.
Per-cell voltage and temperature monitoring, balancing, and over- / under-voltage and over-temperature protection.
Over-current and short-circuit protection, temperature and insulation monitoring, and module-level disconnection.
DC + AC breakers, coordinated BMS / EMS trip, emergency stop, and earth-fault / leakage protection.
Per-cabinet aerosol suppression that releases on a confirmed fire signal.
System-level water suppression that can connect to an external fire hydrant.
Explosion-proof enclosure that contains and safely vents pressure.
Explosion-proof ventilation that clears flammable gas build-up.
Central fire alarm unit that can link into the customer's building fire system.
CW1310-07A multi-gas detector plus heat-sensitive cable for cabinet-level sensing.