Energy Storage Transformer (BESS)
Bi-directional, PCS-adapted transformer for battery energy storage systems. Cyclic loading design, harmonic-tolerant, for BESS charge/discharge cycles.
Technical Parameters
Standard parameter ranges for this model. Special requirements can be assessed by our engineering team — contact us for custom specifications.
| Parameter | Standard Range |
|---|---|
| Rated capacity | 100–3150 kVA |
| Primary voltage (LV) | 0.4 / 0.69 kV (PCS output) |
| Secondary voltage (HV) | 10, 20, 35 kV (grid) |
| Frequency | 50 Hz or 60 Hz |
| Phase | 3-phase |
| Vector group | Dyn11, Dyn5 |
| Impedance | 4.0% – 6.0% (K-factor adjusted) |
| Cooling method | ONAN / ONAF |
| Tap changer | Off-circuit (OCTC) ±2×2.5% |
| Insulation level | LI75AC35 / LI95AC50 |
| Temperature rise | 65K (oil); 65K (winding) — cyclic loading design |
| No-load loss | Per IEC 60076 (optimized for round-trip efficiency) |
| Load loss | Per IEC 60076 (K-factor adjusted) |
| Noise level | ≤55 dB |
| Protection level | IP54 outdoor; containerized option |
| Applicable standards | IEC 60076, IEEE 1547 |
| Ambient temperature | -25°C to +50°C |
| Altitude | ≤1000m (derating above) |
| Accessories | Temp gauges, DGA (optional), remote monitoring interface, IP54 enclosure |
Product Advantages
Verifiable benefits — not empty claims. Here’s exactly what you get when you choose JINXING.
Bi-directional
Handles both charging and discharging cycles without derating.
PCS-Adapted
Matched to PCS output: voltage, current, harmonic spectrum.
Harmonic-Tolerant
K-factor rated for PCS switching harmonics.
Remote Monitoring
SCADA-ready: temperature, DGA, load profile, fault alarms.
Full Routine Test
IEC 60076-1 + harmonic loss verification.
Containerized Option
20ft/40ft container with cooling and fire suppression.
Applications
Where this transformer is used — connecting the product to real-world industry applications.
Grid-Scale BESS
Grid-scale battery storage — PCS step-up to grid.
C&I Storage
Commercial and industrial battery storage systems.
Solar + Storage
Hybrid PV + BESS — shared step-up transformer.
Frequency Regulation
Grid frequency regulation and peak shaving applications.
Quality Proof — 9-Step Manufacturing Process
Every transformer passes through 9 quality-controlled stages, from raw material to shipping. Full traceability with documentation at every step.
Material Inspection
Raw material verification — core steel, copper, oil, accessories checked against certificates before production.
Core Cutting
CNC step-lap core cutting for low-loss grain-oriented silicon steel. Core loss measured before assembly.
Winding
Controlled winding tension, turn-count verification, and insulation paper application for each coil.
Assembly
Core-coil assembly with dimensional checks for fit, clearance, and clamping force.
Vacuum Drying
High-vacuum drying ovens remove moisture from insulation before oil impregnation.
Oil Filling
Filtered insulating oil with breakdown voltage >70kV/2.5mm and moisture <10ppm.
Final Testing
Full routine test per IEC 60076-1 — insulation, resistance, ratio, losses, withstand.
Packing
Sea-worthy export packing with shock-fixed crating for ocean shipping.
Shipping
On-time delivery with documentation — test reports, drawings, manuals in English.
Need a Custom Transformer Solution?
Our engineering team can assess non-standard voltage, capacity, impedance, or environmental conditions — and deliver a full proposal within 48 hours.