Energy saving "Eco unit" Volt stabilization - 80A

1. Overview
ComEC is an advanced energy controller designed to reduce and stabilize the voltage supplied to all electrical circuits. ComEC is installed after the main circuit breaker (MCB) and supplies all connected loads with voltage from the electrical distribution board.
ComEC stabilizes the voltage at the user-defined level (default value 213 V) and allows a maximum voltage reduction of 20 V from the mains voltage. The tolerance for voltage stabilization is approximately ± 2.5 V.
Voltage reduction and stabilization contribute to reduced energy consumption and energy savings. The level of savings depends on the type of load, mains voltage and operating mode of each device. ComEC automatically measures all electrical parameters and calculates savings values accordingly.
ComEC systems are available in the range from 3×80 A up to 3×320 A.
1.1 Hardware and software compatibility
Model Software version Hardware version
ComEC VS 1.12A B2
ComEC VS 1.09A B2
1.2 Terms, abbreviations and definitions
Term Description
IBP Internal bypass
NO Normally open
NC Normally closed
CB Circuit Breaker
MCB Main circuit breaker
PCB Circuit Board
3. Guidelines for choosing a ComEC model
In a typical commercial installation, power consumption varies depending on which loads are active and their operating mode. For example, refrigeration or air conditioning systems draw high current in compressor operation but low current in standby mode.
Distribution boards and main circuit breakers (MCBs) are sized to handle these variations. Typically, MCBs are installed with approximately 50% reserve capacity. High currents (over 50% of the MCB size) usually occur for short periods of time.
The ComEC model (rated current) should be selected so that it matches the MCB size in the electrical switchboard where the ComEC is installed.
The maximum current per phase must not exceed the ComEC's rated current in amperes. ComEC operates continuously in SAVE mode when the actual current is up to 60% of the rated current and can handle temporary peaks up to the maximum level.
If the actual currents are very low, the ComEC size can be reduced for better utilization and cost-effectiveness. In such cases, the current per phase should not exceed 60% of the ComEC system's rated current.
If the ComEC model is lower than the plant's MCB, an incoming circuit breaker or MCB setting should be calibrated to the ComEC's rated current.
5. Operation and voltage control
5.1 Voltage control
ComEC enables voltage reduction up to 20 V and stabilizes the output voltage with a tolerance of ± 2.5 V. After initial activation, the voltage is reduced in steps of 2.5 V until the desired level is reached. ComEC continuously monitors electrical data on all three phases and adjusts the voltage according to a preset value (standard 213 V).
ComEC can operate in SAVE mode if the incoming voltage is higher than the level defined in BYPASS Voltage Gap (default 7 V). It is not recommended to install ComEC where the mains voltage is below 225 V.
5.2 Operating modes and monitoring
5.2.1 Normal mode
In normal mode, ComEC continuously delivers reduced and stabilized voltage to all connected loads. When first started, the voltage is gradually reduced to the desired level at a rate of 2.5 V/min. When increasing, this occurs by 2.5 V every ten seconds.
5.2.2 Astro Clock mode
The Astro Clock mode is used for installations with outdoor lighting, e.g. petrol stations or car parks. ComEC controls the lighting via an output signal from terminal 13 according to a programmed schedule. At start-up, ComEC first increases the output voltage before the Astro Clock signal is activated, and then returns to SAVE mode.
6. Settings for ComEC operation
6.1 Front panel
The front panel consists of:
• Display
• Push buttons
• Bypass switch
• Output switch
Recommended breaker size:
• 3 phase switch 3×100 A for BYPASS
• 3 phase circuit breaker 3×100 A for output, handles 3×35 kVA
The front panel is also used for programming ComEC.
Drawn description of the front panel
Code
+------------------------------------------+
| Display |
| [▲] [▼] [◄] [►] [Enter] |
|-------------------------------------|
| OUTPUT CIRCUIT BREAKER BYPASS SW. |
| [ O ] [ O ] |
|-------------------------------------|
| ComEC 3×100A–3×35kVA |
+------------------------------------------+
(Schematic sketch of the front panel with display, buttons and switches.)
Appendix X – Technical data
Technical specifications
Parameter Specification
Rated voltage 400 V AC ± 10%, 3 phase
Frequency 45–65 Hz
Rated current According to ComEC model
Max. permissible short-circuit current 65 kA
Protection class IP20
Ambient temperature +5 °C to +40 °C
Relative humidity < 90% at 40 °C, non-condensing
Environment Indoors only (B INS)
Dimensions
Model Height [mm] Width [mm] Depth [mm] Weight [kg] Max cable area
3×250 A 1700 455 385 72 35 mm²
3×320 A 1700 455 385 72 50 mm²
3×400 A 1700 455 385 127 70 mm²
3×520 A 1700 800 455 235 M12 ring cable lug
Note: All control terminals in ComEC are dimensioned for cable with a cross-section of 4 mm².
Total weight approx. 60 kg, including pallet & packaging.

Kindsvägen 44 51250 Svenljunga

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Kindsvägen 44 51250 Svenljunga

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