20kVA 3‑Phase In 3‑Phase Out Double‑Conversion Online UPS | Built‑in Isolation Transformer T3000‑20KVA

• ✅ True Double‑Conversion Topology: Continuous rectifier‑inverter operation, fully isolates grid surges, voltage sags and harmonic distortion; zero transfer time on mains failure.
• ✅ Standard Built‑in Galvanic Isolation Transformer: Eliminates ground loops, reduces neutral‑to‑ground voltage offset and load harmonic noise; protects sensitive precision industrial equipment.
• ✅ Dual Static SCR Switches: 0 ms seamless transfer under grid synchronization; <4 ms transfer for out‑of‑sync condition, guarantees continuous power to critical loads.
• ✅ 100% Unbalanced‑Load Tolerance: Three‑phase independent modulation delivers stable power even under fully unbalanced three‑phase load conditions.
• ✅ N+1 Parallel Redundancy: Flexible multi‑unit parallel connection for capacity expansion or higher system availability.
• ✅ High‑Efficiency ECO Mode: Up to 98% system efficiency, cuts operational power consumption under stable mains supply.
• ✅ Intelligent Battery Management: Adjustable charging current 1‑50 A; auto battery test & periodic charge‑discharge cycles to extend battery service life.
• ✅ Full‑Set Protection Functions: Over‑voltage, under‑voltage, over‑current, overload, short‑circuit and phase‑loss protection with sound‑light alarm.
• ✅ Bilingual Touch‑Screen LCD: Chinese / English selectable interface; real‑time monitoring of 200+ operational status and fault diagnostic data.
• ✅ Wide Input Voltage Tolerance: 380VAC ±25% input range, works reliably under harsh unstable‑grid environments, reduces battery discharge frequency.

Working Principle
The T3000‑20KVA follows classic online double‑conversion UPS operating logic.

1. Normal Mode: Utility AC power is rectified to DC, feeding the inverter while charging the battery bank. The inverter regenerates clean, regulated pure sine‑wave AC power for connected loads, fully decoupled from all kinds of grid disturbances.
2. Battery Mode: When mains power fails, batteries feed DC directly to the inverter with 0 ms transfer time, delivering non‑stop backup power.
3. Static Bypass Mode: Upon inverter overload or internal fault, dual static SCR switches automatically shift loads to bypass path to prevent load shutdown.
4. Manual Maintenance Bypass: Permits safe UPS servicing without cutting power to downstream critical equipment.
5. ECO Mode: When mains quality stays qualified, loads are fed via bypass circuit to achieve ≥98% high efficiency; instant switch‑over to inverter mode once grid anomaly is detected. 

Typical Applications

Quality & After‑Sales Support

• ✔ ISO9001 Quality Management System certified
• ✔ CE compliance for industrial power equipment
• ✔ 100% function inspection + 48‑hour full‑load aging test before shipment
• ✔ Standard warranty: 12‑month, extendable to 36 months upon project request
• ✔ Lifetime technical support, 7×24 rapid global response
• ✔ OEM & non‑standard customization available for voltage, capacity and parallel‑system requirements

Q1: What topology is the T3000‑20KVA 20kVA three‑phase UPS using?
A1: It adopts true online double‑conversion topology. Rectifier and inverter run continuously to deliver clean sine‑wave power and isolate grid interference.

Q2: Can this 20kVA UPS run in N+1 parallel redundant configuration?
A2: Yes. It supports stand‑alone, 1+1 redundant and multi‑unit N+1 parallel operation for capacity expansion and higher system reliability.

Q3: What efficiency does the T3000‑20KVA industrial UPS achieve?
A3: 95% under normal double‑conversion mode; ≥98% under ECO energy‑saving mode to reduce long‑term operational energy consumption.

Q4: Does T3000‑20KVA come with built‑in galvanic isolation transformer?
A4: Yes, galvanic output isolation transformer is standard configuration. It mitigates neutral‑ground voltage offset and suppresses harmonic interference to protect sensitive loads.

Q5: What battery bank do I need for this 20kVA 3‑phase UPS?
A5: Requires 32 pieces batteries for 360 VDC nominal battery voltage. Charging current adjustable from 1‑50 A according to your selected battery capacity. Actual backup runtime depends on your battery bank capacity.

Q6: What are the dimension and weight of T3000‑20KVA UPS unit?
A6: Host weight: 200 kg; physical dimension(D×W×H): 350 × 700 × 900 mm.

Q7: Is this UPS suitable for unstable power grid environments?
A7: Yes, it features wide input voltage 380VAC ±25%, good adaptability for sites with frequent voltage fluctuation.