3KVA 12V High frequency online UPS 3000W uninterrupted power supply

Online UPSModel evidence review

Techfine CQ3K(S) 3 kVA / 3 kW Online UPS with 72/96 V DC-Bus Verification

Name: Techfine CQ3K(S) 3 kVA / 3 kW Online UPS with 72/96 V DC-Bus Verification
Brand: Techfine

The source headline calls this a 3 kVA 12 V online UPS, while the embedded CQ3K(S) table describes a 3 kVA/3 kW single-phase online UPS with six 12 V batteries on a 72 V standard route and a 96 V long-run route. The table also lists pure-sine-wave output, 0 ms transfer wording, 110–300 VAC input, adjustable 208/220/230/240 V output with an optional 110 V line, RS-232 and optional SNMP. The 12 V headline must not be used as the UPS DC-bus specification.

Embedded table model: CQ3K(S)

Embedded table capacity: 3 kVA / 3 kW

Displayed standard DC route: 72 V DC using 6 × 12 V batteries

Displayed long-run DC route: 96 V DC

Build Your RFQ

Original source record: 3KVA 12V High frequency online UPS 3000W uninterrupted power supply.

Current source parameter table

This table is preserved from the current source record. Read it with the identity, compatibility and document boundaries below; unresolved conflicts are not corrected by assumption.

Models	CQ3K (S)
Phase	Single-phase
Capacity	3KVA /3KW
Input
Voltage range	110 - 300VAC
Frequency range	50HZ/60HZ
Power factor	1
Output
Output voltage	220VAC±1% (208, 220, 230, 240 adjustable on LCD screen), 110VAC±1% Optional
Frequency range (battery mode)	50 Hz （60HZ selectable）± 0.25 Hz
Transfer	0ms
time
Wave form	Pure sine wave
Battery
Standard	Battery model	12V / 7AH（Standar) 12V /9AH（Optional)
Quantity/DC Voltage	6PCS/72VDC
Max. charging current	1.0A (Maximum)
Long-run	Battery model	Depends on the users
DC Voltage	96VDC
Max. charging current	1A, 2A ,3A, 4A, 5A, 6A, 7A, 8A, 9A, 10A, 11A, 12A adjustable
LCD or LED display	Load size, battery capacity, mains mode, battery mode, bypass mode, fault indication
Control management	Smart RS-232、SNMP optional

Current document status

The source record contains an embedded CQ3K(S) table but no downloadable model-specific datasheet, battery schedule, one-line or bypass diagram. Request the current standard/S suffix documents and matching nameplate before order release.

Current CQ3K(S) table

Separate the 12 V battery-unit label from the UPS series DC bus

The displayed table indicates series-connected 12 V battery units, not a 12 V UPS bank.

Displayed capacity and topology

The table states CQ3K(S), single phase, 3 kVA/3 kW, online pure-sine output and 0 ms transfer wording. Confirm true-online path, efficiency, overload and bypass details.

Displayed standard battery route

Six 12 V/7 Ah batteries, with optional 9 Ah units, are shown as 72 V DC and 1 A maximum charging. Confirm supplied batteries, cabinet, cutoff and protection.

Displayed long-run route

The S/long-run line shows a 96 V DC route with adjustable charging current. Confirm exact series count, chemistry/Ah, charger setting, cabinet, breaker/fuses and cables.

Displayed AC and controls

110–300 VAC input, adjustable 208/220/230/240 V output, optional 110 V wording, RS-232 and optional SNMP are listed. Confirm the delivered regional version and interfaces.

CQ3K(S) RFQ checks

Six checks before fixing a standard or long-run CQ3K configuration

Critical-load procurement must define the operating, bypass, battery and failure paths—not only 3 kVA.

Exact suffix and AC version

Request full CQ3K or CQ3K(S) code, nameplate, phase, input/output voltage/frequency, optional 110 V status, terminals and destination evidence.

Critical load

Provide continuous/peak W and VA, power factor, nonlinear crest factor, inrush, IT/medical/process load type, growth allowance and shutdown sequence.

Topology and bypass

Confirm online conversion path, static and maintenance bypass, transfer/retransfer, bypass limits, overload curve, EPO, internal failure behavior and service isolation.

Battery/DC architecture

Fix standard or S route, chemistry, series quantity, DC voltage/window, Ah/usable energy, charger, cabinet, DC protection/cables, cutoff and runtime curve.

Monitoring and operations

Confirm LCD settings, RS-232, SNMP card, alarms, dry contacts/EPO, shutdown software, logs, network/security requirements and behavior during communication loss.

Evidence and service

Request current datasheet/manual, battery schedule, one-line, safety/EMC/performance evidence, commissioning scope, warranty, service/spares, quantity and lead time.

DC-bus and uptime boundaries

A 12 V headline and 0 ms line do not define the complete CQ3K system

The exact suffix, battery bank, bypass, distribution and service plan determine safe operation and availability.

12 V is not the displayed bank voltage

The table shows 12 V battery units arranged into 72 V and 96 V routes. Treat the title as ambiguous until the exact suffix and nameplate are confirmed.

0 ms is not an uptime SLA

It does not cover overload, bypass events, internal failure, depleted batteries, breakers, downstream distribution or maintenance. Define failure paths and acceptance tests.

Standard and long-run banks are not interchangeable

Different DC voltages, series quantities, chargers, protection and cabinets require separate approved designs; do not substitute batteries from a shared 12 V label.

3 kW does not approve every 3 kW load

Crest factor, inrush, power factor, overload duration, harmonics and redundancy still govern IT, motor, transformer, medical or process-load suitability.

Continue the CQ3K review

Connect critical-load scope to a verified battery runtime design

Use these pages to document the loads and usable-energy assumptions behind the final configuration.

Small-business critical-load planning

Identify the IT, communications, refrigeration or service circuits that actually require continuity.

Review load priorities →

Battery and backup sizing guide

Record load, usable energy, reserve, battery power, temperature and operating objective before presenting runtime.

Review autonomy inputs →

Techfine CQ3K(S) FAQ

Questions to close around the 12 V headline and 72/96 V table

The final answer must come from the exact suffix, nameplate, battery schedule and manual.

Is the Techfine CQ3K(S) a 12 V UPS?

Not according to the displayed table. It lists 12 V battery units arranged as a 72 V standard route and a 96 V long-run route. Confirm the exact suffix and nameplate before ordering.

Does 0 ms guarantee that every critical load stays online?

No. Confirm topology, overload, bypass/retransfer, battery depletion, internal failure, downstream protection, maintenance and the load's ride-through behavior.

Can the 72 V and 96 V battery routes use the same bank?

No. Series quantity, DC window, charger, cabinet, protection, cables and runtime design differ. Use the battery schedule approved for the exact UPS suffix.

What documents should be requested for CQ3K(S)?

Request the current datasheet/manual, nameplate, standard or S battery schedule, DC protection and cable data, bypass/one-line diagram, monitoring options, safety/EMC evidence, warranty and service terms.

Prepare a verified Techfine CQ3K(S) RFQ

Send the AC system, critical-load W/VA/crest/inrush, bypass and autonomy target, standard or long-run battery route, controls and evidence requirements.

Verify CQ3K Configuration