Fine-Pitch Indoor COB LED Wall: Budgeting Power and Cooling

Quick answer

For a fine-pitch indoor COB wall such as EA600COB3, size supply, UPS and cabling from the maximum W/m² for the exact quoted pitch, not the average. Documented maximum is 140 W/m² at P0.62 and P0.78, 280 W/m² at P0.93, P1.25 and P1.56, and 220 W/m² at P1.87. Use average only for running-cost estimates, and itemize thermal survey, ventilation, calibration, spares and commissioning as separate quotation lines.

Sources used: EA600COB3 specs; Conference LED Screen Guide: 2026; Church LED Display Guide &

Why Maximum W/m², Not Average, Drives the Electrical Budget

Use the maximum consumption figure to size the supply, UPS and cabling for the exact quoted pitch. EA600COB3 evidence states maximum consumption is 140 W/m² at P0.62 and P0.78, 280 W/m² at P0.93, P1.25 and P1.56, and 220 W/m² at P1.87. The same source lists average consumption of 50 W/m², 95 W/m² and 75 W/m² respectively and states the maximum figure should be used to size supply, UPS and cabling rather than the average. Apply an average vs maximum power method to the quoted configuration.

Energy use varies with screen area, brightness settings, content, power-supply efficiency and operating hours, so two walls of the same size can draw different power in different rooms. Automatic brightness control and scheduled operation can reduce unnecessary consumption when they are configured for the room’s actual use, but confirm that those functions are included for the quoted control system. For EA600COB3, the operating schedule and brightness setting should be stated alongside the maximum and average figures in the quotation.

Documented COB Power Bands and the SMD Comparison

The EA600COB3 documents maximum and average consumption by pitch group. P0.62 and P0.78: maximum 140 W/m² and average 50 W/m². P0.93, P1.25 and P1.56: maximum 280 W/m² and average 95 W/m². P1.87: maximum 220 W/m² and average 75 W/m². Cabinets run on AC 100–240 V, 50–60 Hz, and the series is indoor IP31 with a working temperature of −20 °C to +50 °C. All six pitches share 600 cd/m², a 140° viewing angle, 16-bit greyscale and at least 3,840 Hz refresh.

The supplied evidence documents EA600COB3 as a COB option and states COB modules are generally more expensive than equivalent SMD modules. For an SMD comparison, the same evidence does not provide indoor W/m² figures, so ask the supplier for maximum and average consumption for the quoted SMD model and pitch. EA640H1 is documented as a larger 640 × 480 mm cabinet available in P1.25 to P2.5 with GOB-protected or SMD2020 modules, and the source says choose the larger cabinet for longer viewing distances and a lower cost per square metre. Treat that as an equipment comparison, not a substitute for the power figure.

Power and Cooling Budget Decisions for EA600COB3

Budget Thermal Survey, Ventilation and Electrical Design as Separate Lines

Measure the wall, closest and farthest seats, ambient light, power, signal routes, ventilation, structural support and maintenance access before the display is specified. Confirm wall loading, ventilation, cable routes, power distribution, grounding and service access with qualified project professionals. Our advice is to put the thermal survey, ventilation design and electrical design on separate quotation lines rather than folding them into the cabinet rate. Use a site survey budget method to keep those inputs visible.

For cooling, ask the supplier or project engineer to provide a heat-load and ventilation calculation for the exact wall area, quoted pitch, brightness setting and enclosure. Ask which consumption figure the engineer has used as the input and confirm the assumptions in writing. The supplied evidence states that supply, UPS and cabling are sized on the maximum figure for the quoted configuration rather than the average; it does not state that cooling or ventilation calculations must use the maximum.

Calibration, Spares and Commissioning Belong on the Quote

Calibration should be a separate budget line. The conference guide says to confirm the specified brightness, contrast, colour calibration and camera test results for the selected configuration before ordering. Total cost includes calibration, spare parts and ongoing service. Ask for calibration and uniformity data for the proposed configuration and test representative content in the room. Use a calibration service budget method so re-calibration is not hidden inside the cabinet rate.

Spare modules should be quoted for the exact pitch and cabinet format. EA600COB3 uses one cabinet size and one module footprint across its six pitches, so each pitch needs a single spare-module SKU. Put a spare module order on its own line and match it to the quoted pitch. The conference guide advises comparing spare-module policy as part of ownership, and the church guide says a documented spare-parts plan can shorten repair time.

Commissioning and site acceptance testing should be visible in the quotation. Installation time depends on screen size, structural work, power and data preparation, calibration, access restrictions and site acceptance testing. A complete proposal should separate LED cabinets, video controller, mounting structure, power and signal distribution, spare modules, freight, installation and commissioning. Treat price as project-specific until those details are confirmed.

A Practical Budget Sequence for a Fine-Pitch COB Wall

Start with the room and the quoted pitch, then fix the maximum W/m² figure for supply, UPS and cabling before any circuit design. Next, request a heat-load and ventilation calculation, an itemized electrical scope, a calibration line, a spare-module line and a commissioning line. Ask each supplier to state the proposed pixel pitch, active resolution, typical and maximum power, cabinet quantity, service method and warranty scope. Provide screen width and height, nearest and farthest viewing distances, indoor location, mounting method, camera requirements, power standard, delivery destination and target installation date. Defer comparison until those details are confirmed.

EA600COB3 Pitch Groups and Documented Power

Buyer checklist

• Measure the room: wall dimensions, closest and farthest seats, ambient light, power, signal routes, ventilation, structural support and maintenance access.
• Request maximum and average power for the exact quoted EA600COB3 pitch, and size supply, UPS and cabling on the maximum.
• Ask for a heat-load and ventilation calculation and confirm which consumption figure the engineer uses as input.
• Itemize calibration, spare modules and commissioning as separate quotation lines.
• Treat prices as project-specific until pitch, cabinet quantity, control, spares, freight and site conditions are confirmed.

Frequently asked questions

How much power does an EA600COB3 wall draw?

Documented maximum consumption is 140 W/m² at P0.62 and P0.78, 280 W/m² at P0.93, P1.25 and P1.56, and 220 W/m² at P1.87. Average consumption is 50 W/m², 95 W/m² and 75 W/m² respectively. Size supply, UPS and cabling on the maximum figure, not the average.

Do I need to budget cooling separately from the LED cabinets?

Yes, ask for a heat-load and ventilation calculation for the exact wall area, quoted pitch, brightness setting and enclosure. Ask which consumption figure the engineer has used as input and confirm the assumptions in writing. The supplied passages document that supply, UPS and cabling are sized on the maximum figure, but they do not document a specific cooling requirement for EA600COB3, so treat ventilation as a project engineering item to confirm.

Why use maximum rather than average power for circuits and UPS?

EA600COB3 evidence states the maximum consumption figure should be used to size the supply, UPS and cabling rather than the average. Average consumption is the figure to use for running-cost estimates.

How should I compare a COB wall with an SMD option?

COB modules are generally more expensive than equivalent SMD modules. EA640H1 is documented as a larger 640 × 480 mm cabinet available in P1.25 to P2.5 with GOB-protected or SMD2020 modules, and the source says choose the larger cabinet for longer viewing distances and a lower cost per square metre. Ask for the SMD model’s maximum and average W/m², because the supplied evidence does not document comparable indoor SMD figures.

What should be itemized separately in the quotation?

A complete proposal should separate LED cabinets, video controller, mounting structure, power and signal distribution, spare modules, freight, installation and commissioning. Total cost includes structure, control equipment, cabling, electrical work, installation, calibration, training, spare parts and service. Treat prices as project-specific until those details are confirmed.

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