Riello UPS Master HE Series User manual

Technical specifications
Master HE
100/250 kVA THREEPHASE/THREEPHASE
On Line Double Conversion Technology (VFI)

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INDEX
1. PURPOSE ......................................................................................................................................... 2
2. SYSTEM DESCRIPTION .................................................................................................................. 2
3. REFERENCE STANDARDS............................................................................................................. 2
4. APPLICATIONS ................................................................................................................................ 3
5. CONFIGURATIONS.......................................................................................................................... 4
6. UPS DESCRIPTION........................................................................................................................ 10
6.1. AC/DC Converter............................................................................................................... 11
6.1.1 Easy Source....................................................................................................................... 11
6.1. DC/DC Converter............................................................................................................... 12
6.2.1 Battery Care System ......................................................................................................... 12
6.2. DC/AC Converter............................................................................................................... 12
6.3. Static switch....................................................................................................................... 14
7. CONTROL PANEL.......................................................................................................................... 15
8. DISCONNECTING SWITCHES....................................................................................................... 17
9. COMMUNICATION ......................................................................................................................... 18
9.1. Report Signals................................................................................................................... 18
9.2. Commands......................................................................................................................... 18
9.3. Emergency Power Off (E.P.O.)......................................................................................... 18
9.4. Monitoring and control software ..................................................................................... 19
10.UPS CABINET ................................................................................................................................ 19
11.INSTALLATION .............................................................................................................................. 19
12.OPTION........................................................................................................................................... 20
12.1. Communication ................................................................................................................. 20
12.2. LED Remote mimic panel ................................................................................................. 22
12.3. Remote graphic panel....................................................................................................... 22
12.4. Battery cabinet................................................................................................................... 23
12.5. Starting up from battery (Cold Start)............................................................................... 23
12.6. UGS - UPS Group Synchroniser...................................................................................... 23
12.7. PSJ - Parallel Systems Joiner.......................................................................................... 23
12.8. Isolating transformers ...................................................................................................... 23
12.9. Voltage adaptation ............................................................................................................ 24
12.10. Kit for UPS without input and output neutral................................................................. 24
12.11. Protection levels................................................................................................................ 24
12.12. Top cable entry.................................................................................................................. 24
12.13. Environmental sensors..................................................................................................... 25
12.14. Fan Failure monitoring ..................................................................................................... 25
13.ENVIRONMENATL REQUIREMENTS........................................................................................... 26
14.TECHNICAL DATA......................................................................................................................... 26

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1. PURPOSE
The present specification defines the technical characteristics of the UPS Master HE 100-120-160-200-250 kVA, a device
which supplies clean energy to the connected load, without any interruption due to disturbances in the mains power supply,
including a total power failure.
Master HE is a series of UPSs designed entirely by Riello UPS a leading manufacturer of uninterruptible power supplies
from 350 VA to 800 kVA, with over 25 years of experience in the sector.
To find out about other products available, as for example Static Transfer Switch (STS) and the solar inverters, please visit
the website www.riello-ups.com.
2. SYSTEM DESCRIPTION
The Master HE series is available in three phase models 100-120-160-200-250-300-400-500-600 kVAwith On Line double
conversion technology in accordance with VFI-SS-111 classification – as defined by standard IEC EN 62040-3 - with
transformer in output to the inverter.
Master HE is compatible with the most critical, industrial and Information Technology (IT), services thanks to its many
features including:
a) Easy Source
•Low input current distortion below 3% and power factor up to the unit, from 10% to 100% of the load. This is
possible thanks to the rectifier realized with IGBT three phase bridge and controlled by DSP technology;
•Compatibility with motor generators thanks functions as power walk-in, that guarantees a progressive start-up
of the rectifier, power walk-in delay timer and battery inhibition.
b) Battery Care System
•Battery recharge with two voltage levels as per characteristics IU1U2;
•Voltage Recharge with temperature compensation;
•Compatibility to recharge battery with long autonomy;
•Battery test to check a battery decay.
c) Isolation transformer onthe inverter that protects the load fromnetwork disturbances in all theworking conditions
without influencing the overall efficiency that can catch up to 95,5%
d) Double load protection towardsthe battery: one furnished with intrinsic electronic protection in the control circuits
and galvanic furnished with output transformer from the inverter.
e) Thermal overrating of the inverter to guarantee an overload (kVA) at 110% for 60 minutes.
f) The nominal output power rating of the UPS is given with a power factor of.
g) Backfeed protection.
h) System expandability up to 8 units, Dual BUS and Dynamic Dual Bus systems.
i) “Energy Management System” function for systems in parallel configurations.
3. REFERENCE STANDARDS
Our company quality system is certified ISO 9001/2000 (Certificate No CERT-04674-99-AQ-VEN- SINCERT) and covers
all procedures, operating methods and monitoring of all stages from design to production and sales activities.
This certification is a guarantee for the customer with regard to the following aspects:
•Use of quality materials;
•meticulousness in the production and testing phases;
•Constant customer support.

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Besides company certification, the product is classified VFI-SS-111 in conformity with standard IEC EN 62040-3 and
satisfies the following UPS specific standards:
•IEC EN 62040-1: Static uninterruptible power supplies (UPS): general and safety provisions;
•IEC EN 62040-2: Electromagnetic compatibility (EMC) requirements category C3;
•IEC EN 62040-3: Methods of specification of performances and test provisions;
The Master HEseries also makes reference to the following general standards, where applicable:
•IEC 60529: Degree of protection provided by enclosures;
•IEC 60664: Insulation for low-voltage equipment;
•IEC 60755: General Requirements for Residual Current Operated Protective Devices;
•IEC 60950: General safety provisions for "Information Technology" equipment;
•IEC 61000-2-2: Electromagnetic compatibility immunity;
•IEC 61000-4-2: Electrostatic discharge immunity test;
•IEC 61000-4-3: Radio frequencies, electromagnetic immunity test;
•IEC 61000-4-4: Transitory overvoltage immunity test;
•IEC 61000-4-5: Overvoltage immunity test;
•IEC 61000-4-11: Voltage dips, short interruptions and voltage variations immunity test;
•IEC 61000-3-12: Harmonic current emissions (for equipment with rated current > 16 A ≤ 75).
European Directives:
LVD directive 2014/35/EU
The LVD covers all health and safety risks of electrical equipment operating with a voltage between 50 and 1000 V for
alternating current and between 75 and 1500 V for direct current.
EMC directive 2014/30/EU
The EMC Directive limits electromagnetic emissions from equipment; The Directive also governs the immunity of
such equipment to interferences.
4. APPLICATIONS
The UPSs of the Master HE series are suitable for all applications requiring protection of the critical load, from simple
installations to more complex systems where a higher level of reliability and maintainability is required.
Data Centers and Telecommunication: the uninterruptible power system can growtogether with your business since the
basic system can be expanded with up to eight units connected in parallel without compromising the initial investment.
Furthermore, greater levels of reliability and maintainability can be achieved with the more advanced configurations such
as the “Dual Bus” and “Dynamic System Expansion”.
Industrial processes and electro-medical systems: the UPS is particularly suitable for application with industrial
processes and the power supply to electro-medical systems, thanks to its design principles and technical features, such
as for example:
•inverter with output transformer guaranteeing isolation of the load from mains interference in all conditions;
•high short circuit and overload capacity;
•high battery recharging capacity, enabling applications with different kinds of batteries (sealed, vented or Nickel
Cadmium) with long back-up time.
Emergency systems:the Stand-by OFF mode of operation can be selected to activate the emergency back-up function,
as defined by standard EN 50171 (Central Power Supply Systems).

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5. CONFIGURATIONS
The following configurations are available:
Single UPS
The single version of the system, normally used for simple installations, can be extended to up to 8 units to satisfyincreases
in load power or to introduce a level of redundancy. The same group can function as a frequency converter of 50/60 Hz
and vice versa with or without battery by a simple arrangement that can be done in site (refer to dedicated paragraph).
Parallel configuration
Up to 8 UPSs can be connected in parallel to increase the power of the uninterruptible power system (power parallel) or to
enhance its reliability (redundant parallel).
The system is defined as “redundant parallel” when the block of one or several UPSs does not determine the loss of the
power supply.
All the UPSs fed the load simultaneously with automatic sharing of the current.
UPS in 1+1 redundant configuration
UPS single module

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The units exchange information on the operating status and the sync signals by the connections in loop with dual
redundancy. This means that even in the event of the accidental interruption of both connections, only the UPS affected
by this interruption cuts itself off, while the other one continues to operate without any interference.
The “Hot System Expansion” (HSE) feature means that a new UPS can be added to the system while the other units are
on-line and powering the load from the inverter.
The integrated UPS will configure itself automatically with the system data without any disturbance to the load.
In configurations with more than two units,to improve the normal and extraordinary maintenance operations,it is advisable
to install an external maintenance by-pass and to inhibit the UPS’s internal one.
The UPS will be equipped with terminal to connect the following auxiliary contacts:
•External Maintenance Switch
•External Load Output Switch
The parallel system may function with a separate battery or a single battery, that is, one battery shared by several UPSs.
In the case of loss of redundancy the system has an alarm message.
Parallel configuration up to 8 units
In parallel systems, the “Efficiency Control System” (ECS) function enables the UPS to be switched on and off
automatically according to loadvariations, while retaining the level of redundancydefined by the operator. Thissignificantly
reduces the total energy dissipated by the system since only those UPSs required to power the connected load remain
switched on (for example during the night or at weekends).

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Centralized By-pass: Master Static Bypass (MSB)
The configuration with centralized By-pass comprises up to UPS modules (MHE NBP type) having not embedded static
switch connected in parallel and a separated By-pass section. The By-pass unit is equipped with a static switch which
automatically switches the power supplied to the load by the whole system directly to the mains power supply and vice
versa. Switching is needed during system maintenance operations, or when the whole system is unable to support the
load due to overloads or output short circuits over the current limits.
This configuration assumes the selection of n UPS modules having the same power rating.
The following site prescriptions should be taken into account for the site planning:
•Distance between UPS module and central by-pass shall not exceed 40 meters
•Communication bus cable between units shall not exceed 50 meters
•Total communication ring (UPS units and by-pass) shall not exceed 150 meters
•Battery can be arranged as common or separate (same as distributed parallel system)
•Maintenance bypass is part of the system either embedded in Riello UPS solution (Fig. 1) or supplied by the
customer together with all Input/Output/distribution switches (Fig. 2)
This manually control switch will enable the load feeding directly from the mains insulating the UPS whenever
there is an intervention on its critical parts.
According with site arrangement and UPS modules pairing layout, it will be possible to arrange for MSB having switches
inside (Fig 1) or MSB without any breaker, leaving the coupling arrangement to the customer which shall ensure handy
and safe operations during maintenance. (Fig 2)
These two different layouts modify the system current reading but it won’t affect the system operation.
Below we resume the two different scenarios according with system operations either on Inverter or bypass mode:
Display MHE NBP Display MHE MSB
Riello UPS will provide the system as for Fig. 1
System on
inverter Unit current in: kW, kVA, peak, rms and %
refers to single unit capacity System current in: kW, kVA, peak, rms, and % refers to MSB capacity
System on static
bypass No info
System current in: kW, kVA, peak, rms and %
referred to MSB capacity with inverters locked
(fault) or % referred to unit modules with
inverters ready to supply load.
Riello UPS will provide the system as for Fig. 2
System on
inverter Unit current in: kW, kVA, peak, rms and %
refers to single unit capacity
System current in % referred to unit module
(master one will pass the data) and not MSB
capacity
System on static
bypass No info
System current in: kW, kVA, peak, rms and %
referred to MSB capacity with inverters locked
(fault) or % referred to unit modules with
inverters ready to supply load.

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Fig 1. System configuration with centralized bypass and switches:
Fig 2. System configuration with centralized bypass without:
NOTE: It is warmly suggested to arrange a proper on site procedure (written or via castell key mechanical
interlock) so that SWOUT can be open just after SWBY opening manoeuvre.

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Dual Bus System (UGS)
Two independent systems can be configured in Dual Bus with a single or separate power source.
The synchronization option (UGS) keeps the outputs of the two systems constantly synchronized, regardless of the input
variations and when the system is powered by the battery.
Each system comprises up to a maximum of 8 parallel UPSs. Finally up to 16 units might be mutually synchronized.
This system has been designed for configurations that use the STS (Static Transfer Switch) since it guarantees switching
from one continuous source to the other without disturbances to the loads.
Note: UGS may operate with parallel systems either in distributed or centralized by pass arrangement. Refer to dedicated
manual for installation and operations details.

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Dynamic Dual Bus System (PSJ)
Two independent systems (up to 4 units each) can be connected in a “Dynamic Dual Bus” configuration by means of the
PSJ (Parallel System Joiner) option.
This enables the two systems to be joined to form a single system when, for example, part of one system is undergoing
maintenance and it is felt appropriate to use the redundant UPS for both bars of the load. The synchronization and the
equal distribution of power is guaranteed by the PSJ.
This characteristic provides an extreme flexibility of the systems in case of maintenance or when is necessary to modify
the redundancy level between the two bus.
Note: PSJ operates with distributed parallel systems, only.
Frequency Converter
Units in standard configuration at 400 V can operate as frequency converters (50/60 Hz and vice versa), whether or not
batteries are present. This feature can be set at the commissioning. The bypass is inhibited in this configuration and
frequency converters with operating voltages other than 400 V, such as 440 V, 460V, etc. can be supplied on request.
With such configuration the UPS can be used without input neutral cable.
Note: For Frequency converter applications please contact your sales representative to ensure that converter layout and
technical arrangements comply with all tender requirements.