Name: Master HE UPS
Brand: Zener
Availability: OutOfStock

Master HE online three phase to three phase transformer-base UPS

Free transportation to the installation site
Free initial installation and setup
2-year official warranty and 10 years of after-sales service

Purchase Steps
Step 1: Needs Assessment and Solution Proposal
Our technical experts begin by understanding the customer’s specific power requirements, operating environment, and long-term goals. Based on this assessment, we recommend the most suitable products and system configurations tailored to the client’s needs.
Step 2: Purchase Request and Quotation Preparation
Once the customer expresses interest in a particular solution, we formally receive their purchase request. In response, we prepare a detailed price quotation covering the proposed products and services.
Step 3: Proforma Invoice Issuance
Following the quotation phase, a proforma invoice is issued for the selected items. This document outlines all financial and logistical details necessary for the customer to proceed with the purchase.
Step 4: Confirmation and Payment Agreement
Upon the customer’s approval of the proforma invoice, both parties finalize the payment terms, including method, schedule, and any applicable conditions. This step confirms mutual agreement and initiates the order process.
Step 5: Procurement and Final Invoice
After confirming the order, our team begins the procurement process for the approved items. Once ready, we issue the final invoice to the customer based on the agreed terms and confirmed specifications.
Step 6: Delivery, Warranty, and Handover
The final step includes preparing the goods for delivery, issuing official warranty documentation, and ensuring all contractual obligations are met. The products are then handed over to the customer in accordance with the agreed timeline and conditions.

Product Originality

At Zener Eng. Co., we understand that today’s smart buyers seek original, high-quality products those manufactured by reputable, well-established companies that invest in research, development, and quality assurance. We fully respect this expectation and are committed to offering only genuine products, with full guarantees of authenticity and performance.
Driven by our core values of honesty and customer-centric service, we go to great lengths to ensure that every product we offer is authentic, officially sourced, and backed by valid warranties. All items are verified with original manufacturer serial numbers, untampered, and legally imported into the country.
The equipment and devices we supply are fully covered under warranty. In the event of any issue during the warranty period, our customers benefit from full after-sales support and technical service provided by Zener Engineering Company.
Customer satisfaction is a fundamental organizational goal for us. We constantly measure our success in this area through feedback and experiences shared by our valued clients.
Unfortunately, it is not uncommon for buyers to encounter sellers who promise originality and official warranties, only to discover when problems arise that the product was not genuine or the warranty was invalid. This leads to frustration and a lack of trust in the purchasing process.
At Zener, one of our key missions is to eliminate such concerns by creating a sense of trust and peace of mind for our customers. We want you to feel confident in every purchase you make with us. To that end, we are always ready to provide official documentation verifying the authenticity and origin of any product upon request.

Power Estimation

UPS/Model

Select Model

UPS/Input

Nominal Voltage

380, 400, 415 VAC three-phase + N

Voltage Range

400 VAC ±20% @ full load

Frequency Range

45 to 65 Hz

Power Factor

0.99 @ full load

Voltage Distortion (THDi)

< 3%

Inlet Type

terminal

UPS/Bypass

Voltage Range

380, 400, 415 VAC three-phase + N

Frequency Range

50 or 60 Hz, tolerance ±2% (selectable from ±1% to ±5%)

UPS/Output

Power

- select a model from top -

Nominal Voltage

380, 400, 415 VAC three-phase + N (selectable)

Voltage Variation

static variation ±1%, dynamic variation: EN 62040-3 class performance 1 non-linear load

Frequency Range

50 or 60 Hz (selectable), stability during battery operation 0.05%

Power Factor

Voltage Distortion (THDv)

< 1% with resistive linear load, < 3% with non-linear load

Outlet Type

terminal

Wave form

sinusoidal

Efficiency

95.5% in online mode, up to 99% in eco mode

UPS/Battery

Battery Type

external

Qty × Voltage

40 × 12 VDC = 480 VDC

Recharging Time

UPS/Protections

Overload

110% for 60 min; 125% for 10 min; 150% for 1 min

Protections

over-current, short-circuit, over-voltage, under-voltage, over-temperature, excessive low battery

Alarms

line failure, battery low, over-load, fault conditions

UPS/Physical

Dimensions (W × D × H)

- select a model from top -

Weight

- select a model from top -

UPS/Environment

Working Temperature

ambient: min 0 °C, max 40 °C, recommended for battery life: 20 to 25 °C

Working Humidity

max 95% non-condensing

Altitude Level

1000 m @ nominal power (Derating 1% power for every 100 m above 1000 m, max 6000 m)

Noise Level

- select a model from top -

UPS/Others

Communications

2 slots for communications interface, 2 × RS232

Standards

European directives: LV 2014/35/EU low voltage Directive EMC 2014/30/EU electromagnetic compatibility Directive Standards: Safety IEC EN 62040-1; EMC IEC EN 62040-2; RoHS compliant Classification in accordance with IEC 62040-3 (Voltage frequency Independent) VFI - SS - 111

Other Specifications

How does the Master HE UPS improve power quality for sensitive equipment?
With its true online double-conversion topology and isolation transformer, the Master HE ensures stable voltage and frequency regardless of input fluctuations. This clean output power is essential for protecting mission-critical systems like medical devices, lab equipment, or industrial controllers from surges and harmonics.

How does the Master HE simplify battery management and reduce maintenance?
It features a dedicated Battery Care System with multi-stage charging, temperature compensation, and periodic self-tests. These functions optimize battery lifespan and performance, while reducing the need for manual checks—especially useful in unmanned or remote sites.

Master HE UPS
pdf | Oct. 24 2025 | brochure | FA