COMEX COVER MZ Series User manual

COMEX S.A.
Uninterruptible Power Supply
COVER MZ
20-30-60-80 kVA
User manual

COMEX S.A.
The content of this document is copyrighted by the publisher
and can not be reproduced without prior permission.
We reserve the right to modify the design and specifications without
prior notice.
Copyright 2018
COMEX S.A.
All rights reserved.

COMEX S.A.
Table of contents
1. Precautions ......................................................................................................................................1
2. Installation procedure......................................................................................................................3
2.1. Introduction...............................................................................................................................3
2.2. Preliminary checks ....................................................................................................................3
2.3. Location .....................................................................................................................................4
2.3.1. UPS room ...........................................................................................................................4
2.3.2. Battery room......................................................................................................................4
2.3.3. Storage ...............................................................................................................................4
2.4. Unpacking, checking and setting...............................................................................................4
2.4.1. Unpacking ..........................................................................................................................4
2.4.2. Design and dimensions of the UPS ....................................................................................6
2.4.3. Service space......................................................................................................................7
2.5. Safety elements.........................................................................................................................8
2.5.1. UPS input power supply.....................................................................................................8
2.5.2. Battery circuit protection...................................................................................................9
2.6. Power cords.............................................................................................................................10
2.6.1. Maximum currents of the power supply .........................................................................11
2.6.2. Connecting wires..............................................................................................................12
2.7. Communication .......................................................................................................................14
2.7.1. Extended communication card Dry Contact....................................................................14
2.7.2. Control module ................................................................................................................15
2.7.3. SNMP card........................................................................................................................15
2.7.4. Monitoring card ...............................................................................................................15
3. UPS operation modes ....................................................................................................................17
3.1. Introduction.............................................................................................................................17
3.2. Principle of operation..............................................................................................................17
3.2.1. Bypass module .................................................................................................................18
3.3. Power supply operation modes ..............................................................................................18
3.3.1. Online mode.....................................................................................................................18
3.3.2. Battery mode ...................................................................................................................18
3.3.3. The restart mode of the power supply after power back ...............................................19
3.3.4. Bypass mode ....................................................................................................................19
3.3.5. Service bypass..................................................................................................................19
3.3.6. ECO mode ........................................................................................................................19
3.3.7. Frequency converter mode .............................................................................................19
3.3.8. Parallel mode ...................................................................................................................20
4. User manual...................................................................................................................................21
4.1. Power connectors ...................................................................................................................21
4.2. Procedures for starting the power supply - single operation .................................................22
4.2.1. Starting the UPS from complete shutdown.....................................................................22

COMEX S.A.
4.2.2. Starting UPS with the battery pack..................................................................................23
4.3. Procedures for switching the power supply between operating modes................................23
4.3.1. Switching from normal operation to battery operation..................................................23
4.3.2. Switching from normal operation to Bypass operation ..................................................23
4.3.3. Switching from Bypass mode to normal operation.........................................................24
4.3.4. Switching from normal operation to service Bypass mode.............................................24
4.3.5. Switching from service Bypass mode to normal operation.............................................25
4.4. The procedure of complete switching off the power supply (power supply by mechanical
bypass). ..............................................................................................................................................25
4.5. Emergency shutdown using EPO.............................................................................................25
5. LCD panel operation ......................................................................................................................26
5.1. Introduction.............................................................................................................................26
5.2. Indication of UPS operation status on the display..................................................................27
5.3. Reading work parameters .......................................................................................................31
5.3.1. Power supply to bypass track ..........................................................................................31
5.3.2. Power supply to the rectifier's track................................................................................31
5.3.3. Battery..............................................................................................................................32
5.3.4. UPS output .......................................................................................................................32
5.4. Reading information about UPS (Event log) ...........................................................................32
5.4.1. Event Log..........................................................................................................................33
5.4.2. User Log ...........................................................................................................................33
5.4.3. Information about the device..........................................................................................33
5.5. System configuration settings.................................................................................................34
5.5.1. Power parameters ...........................................................................................................34
5.5.2. Battery settings................................................................................................................35
5.5.3. Battery tests.....................................................................................................................36
5.6. Special functions .....................................................................................................................37
5.7. Display settings........................................................................................................................37
5.8. Password settings....................................................................................................................37
5.9. System speaker .......................................................................................................................38
5.10. Turn On/Off .........................................................................................................................38

COVER MZ series - User manual
COVER-ENERGY SA
1
1. Precautions
This user's guide contains the necessary information on the installation and use of MZ COVER
power supplies.
Before installing and using, please read the manual carefully.
The UPS must be installed and configured by an authorized service center of the manufacturer
or distributor.
In the case of installations by persons without the required experience, there is a risk of users
being exposed to health or life. Persons not entitled to the installation may damage the power
supply, which in this case is not subject to the terms of the warranty.
FULFILLED STANDARDS
The device complies with the directives CE 73/23 and 93/68 (low voltage safety) as well as
89/336 (EMC) and the following standards:
*IEC62040-1-1
*IEC/EN62040-2 EMC CLASS C3
*IEC62040-3
NOTE - Large leakage current
The connection of the protective conductor (PE) is essential and must be made before
connecting the remaining working conductors (power supply, consumer, battery).
Grounding should be carried out in accordance with prevailing standards and practical
knowledge applicable at the place of installation.
The leakage current exceeds 3.5 mA and is less than 1000 mA.
When choosing immediate-action RCCB or RCD devices, the transient and fixed leakage
currents that may occur during commissioning must be taken into account.
Select residual current circuit breakers (RCCB) that are sensitive to unidirectional DC current
pulses (Class A) and insensitive to transient current pulses. It should also be remembered
that a given RCCB or RCD device conducts the leakage currents of the receiver.
Operation
There is dangerous voltage in the uninterruptible power supply housing. The risk of contact
with such a voltage is kept to a minimum, as live components are behind a closed housing.
Additional internal protective covers make the device protected in accordance with IP20
protection class.
Normal operation of the device, taking into account the recommended operating
procedures, poses no threat to personnel.
All maintenance and service procedures require access to the interior of the device and
should only be carried out by trained employees.
警告
危险
警告
危险
警告
危险

COVER series MZ –User manual
COMEX S.A.
2
High battery voltage> 400 Vdc
All work related to the operation and installation of batteries can be performed by a properly
trained service.
After connecting the battery, the voltage at their terminals exceeds 400 Vdc and is
potentially lethal.
Battery manufacturers give detailed precautions that must be followed when working on or
around battery-powered large batteries. Such measures should always be strictly observed.
Particular attention should be paid to recommendations regarding local environmental
conditions and the provision of protective clothing, first aid and fire-fighting equipment.
警告
危险

COVER series MZ –User manual
COMEX S.A.
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2. Installation procedure
This chapter is devoted to the method of installation, method of laying and wiring of the UPS.
2.1. Introduction
The chapter presents the basic requirements for the location and wiring of the power supply.
The description presents a step by step installation instruction, which is a series of guidelines
for the service to be followed during assembly.
Warning - Installation may only be carried out by an authorized service center
1. Do not connect electrical equipment to the power supply before finding a service
technician that the power supply is properly connected and configured.
2. The UPS should be installed by qualified technical personnel in accordance with the
guidelines contained in this chapter.
Do not perform any electrical work interfering with the electrical installation before and after
the UPS, during operation of the UPS system. Damages resulting from this title (eg change of
phase sequence) are not covered by the guarantee.
Warning: dangerous batteries
Special precautions must be observed when working with batteries connected to the power
supply. After connecting the battery, the voltage on the terminals exceeds 400 Vdc and is
potentially fatal.
To protect your eyes against accidental arcing, it is recommended to use safety goggles.
Additionally, it is recommended to:
Remove rings, watches and all metal objects.
Only use tools with insulated handles.
If electrolyte leaks from the battery or the battery is otherwise damaged, it must be
replaced. Damaged batteries should be stored in a container resistant to sulfuric acid
and disposed of in accordance with local regulations.
If the electrolyte comes into contact with the skin, immediately contaminate the
contaminated area with water.
2.2. Preliminary checks
Perform the following checks before installing:
Check visually that the supplied devices, i.e. the UPS and batteries, have not been
damaged as a result of their transport. Damages should be reported immediately to the
supplier.
Verify compliance of the delivered equipment with the installation requirements. The
power of the PSU is described on the label each time.
警告
危险
警告
危险

COVER series MZ –User manual
COMEX S.A.
4
2.3. Location
2.3.1. UPS room
The UPS is intended for indoor installation. The device should be in a clean environment with
adequate ventilation to maintain the ambient temperature within the required specification
range. The UPS provides forced convection cooling via internal fans. Cold air enters the device
through ventilation openings located in the front part of the housing and is blown out by grills
in the back of the housing. Do not block the ventilation openings.
Depending on the room conditions, the ventilation openings of the power supply should be
regularly cleaned, eg with a vacuum cleaner. The ventilation will ensure efficient cooling and
will extend the life of the device.
Note: The UPS should be installed on a stable and non-flammable substrate.
2.3.2. Battery room
Battery temperature should be stable, as it is the main parameter affecting the battery life and
capacity. The optimal battery temperature is 15-25 ° C. It is recommended to maintain a nominal
temperature of 20 ° C.
Working at a higher temperature will shorten the battery life, and at a lower temperature will
reduce their capacity. Any increase in battery operating temperature by a further 8 ° C, reduces
the service life by 50%.
Keep batteries away from heat sources and hot air outlets.
When installing the battery outside the UPS, use the battery circuit protector located as close
as possible to the battery. The cables connecting the batteries and the UPS should be as short
as possible.
2.3.3. Storage
If the device is not installed and requires storage, protect it from excessive moisture and high
temperatures. Store batteries in a dry and cool room. The most suitable storage temperature
for batteries is 20-25 ° C. If the device has not been installed immediately after delivery, store it
in a room to protect it from excessive moisture and heat sources.
2.4. Unpacking, checking and setting
Before unpacking, carefully inspect the delivered packaging of the device for damage during
transport. After removing from the packaging, check that the equipment does not show signs
of damage. If any damage occurs, please report it to the supplier immediately.
2.4.1. Unpacking
The power supply is delivered in a cardboard package on a wooden pallet. For unpacking,
remove the carton and protective foams inside the package. The device shown below is shown
after disassembling the packaging.

COVER series MZ –User manual
COMEX S.A.
5
Figure 2-1 View of the sample power supply after disassembling the packaging
Note: Remove the screws that connect the UPS enclosure to the wooden pallet, then place the
power supply at the point of installation using the exit provided in the UPS enclosure.
Disassembly should be carried out carefully so as not to damage the housing.
The 60kVA power supply is equipped with brake wheels, and the 80kVA power supply has
additional feet to stabilize the UPS after it has been positioned at its destination, as shown
below.
Check the correctness of the delivered equipment on the label located on the back of the UPS
door. The label contains basic information about the model, power, etc.
Note: Dispose of the safety materials (wood, plastic, etc.) after disassembly in accordance with
the applicable local environmental regulations.
In order to extend the service life of the device, it is necessary to provide a suitable place for its
installation, which should guarantee:

COVER series MZ –User manual
COMEX S.A.
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Protection against gases and vapors that may cause corrosion
Easy connection to the electrical system
Sufficient service space
Protection against excessive moisture and heat source
Suitable fire protection
The working temperature should be in the range of 20-25ºC. At this temperature, the
batteries exhibit optimum performance.
2.4.2. Design and dimensions of the UPS
The appearance and dimensions [mm] of the UPS are shown in the figures below:
Figure 2-2 The front / side view of the MZ 20K,30K UPS
Figure 2-3 The front / side view of the MZ 60K UPS