VSI PWM 2.1H-S25 User manual

PWM SERIES
STATIC DIGITAL
AC AUTOMATIC VOLTAGE STABILISER
USER MANUAL
Thank you for purchasing a VSi PWM Series
Static Digital AC Automatic Voltage Stabiliser

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IMPORTANT
PLEASE READ
This User / Operator Manual contains information concerning the safe and
proper installation and operating procedures applicable to the PWM range of
Single Phase Static Digital AC Automatic Voltage Stabilisers.
The Manual should be read in full before attempting to use, or operate the
equipment.
If any problems are encountered with the procedures contained within this
Manual then seek assistance from VSi or the distributor from whom you
purchased the equipment.
Whilst every precaution has been taken to ensure the accuracy and completeness
of this User Manual, VSi assumes no responsibility and disclaims all liabilities for
damages resulting from misuse of this information or any error or omission.
Voltage Stabilisers International Limited
Tel: [phone]
Web: http://www.VSi.uk.com
Email
Sales: [email protected]
General: [email protected]
Support: [email protected]

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Table of Contents
Pages
1. Introduction ………………………………………………………………………. 3
1.1
Overview
…………………………………………………………………
……………..
3
1.2
Basic Principle of Op
eration
……………………………………
……………..
3
2. General Specification ………………………………………………………… 4-7
2.1
Input
………………………………………………………………………………………
4
2.2
Output
……………………………………………………………………………………
4
2.3
Metering, Status Indicators, Alarms & Communication
………….
5
2.4
P
rotection
………………………………………………………………………………
5
2.5
Environment
…………………………………………………………………………..
6
2.6
Physical
………………………………………………………………………………….
6
2.7
Certification & Compliance
…………………………………………………….
6
2.8
Warranty
………………………………………………………………………………..
7
3. Safety Instructions …………………………………………………………….. 8-9
3.1
Introduction
…………………………………………………………………………..
8
3.2
General Installation and Usag
e
………………………………………………
8
4. Visual External Appearance ………………………………………………. 10-17
4.1
Front View
…………………………………………………
……………………………
10
4.2
Rear View
……………………………………………………………………………….
1
2
4.3
Display View
…………………………………………………………………………..
1
5
5. Installation & Operating Instructions ………………………………… 18-22
5.1
Unpacking & Inspection
………………………………………………………...
1
8
5.2
Positionin
g
……………………………………………………………………………..
1
8
5.3
Hardwire Installation
……………………………………………………………..
1
9
5.4
Plug N Play Installation
…………………………………………………………..
20
5.5
Normal Operation
………………………………………………………………….
21
5.6
Manual Bypass Operation
……………………………………………………
…
2
2
6. Troubleshooting ………………………………………………………………… 23-26
7. Warranty & Returns …………………………………………………………… 27-28
7.1
Warranty
………………………………………………………………………………..
2
7
7.2
Returns Procedure
…………………………………………………………………
2
8

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1. Introduction
1.1 Overview
PWM SERIES microprocessor controlled Single Phase Static Digital Voltage
Stabilisers automatically correct brownouts (by boosting low voltage)
and over-voltages (by reducing high voltage). They are, designed to
ensure the delivery of a stable and quality output voltage.
Being designed for many years of reliable service, VSi’s PWM models
provide protection from incoming line voltage sags, spikes and surges /
swells. As Static Digital solutions they are virtually maintenance free and
offer an exceptional fast speed of correction, making them ideal for the
most sensitive of electrical and electronic loads.
1.2 Basic Principle of Operation
PWM SERIES AC Voltage Stabilisers are designed around a traditional well
proven ‘Buck / Boost’ design topology, utilising the latest in IGBT Power
Devices and digital PWM (Pulse Width Modulated) controls.
Please Note:PWM Voltage Stabilisers are NOT FOR USE with life
sustaining equipment, or any device where the power requirements
exceed the “Maximum Output Rating” listed in the General Specification
tables. These Stabilisers are not designed to support / protect voltage
“back feed” applications, where energy is required to be also fed back
into the utility supply.

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2. General Specification
2.1 Input
Model No PWM
2.1H-S25
PWM
3.5H-S25
PWM
5.25H-S25
PWM
7H-S25
PWM
10.5H-S25
PWM
14H-S25
Input
Voltages 220V - 230V - 240V AC Single Phase, 2 Wire (L, N & G/E)
Voltage
Range
230V ±25% (173V to 287V) AC Single Phase, 2 Wire (L, N & G/E)
(220V & 240V to Special Order)
Max Input
Current 13 Amps 21 Amps 32 Amps 42 Amps 63 Amps 84 Amps
Input
Connectors
IEC 320
(16 Amp) Hardwire
Operating
Frequency 50 / 60 Hz
2.2 Output
Model No PWM
2.1H-S25
PWM
3.5H-S25
PWM
5.25H-S25
PWM
7H-S25
PWM
10.5H-S25
PWM
14H-S25
Max Output
Rating
2.1
kVA/kW
3.5
kVA/kW
5.5
kVA/kW
7.0
kVA/kW
10.5
kVA/kW
14.0
kVA/Kw
Output
Voltage
230V ±1%, Single Phase, 2 Wire (L, N & G/E)
(220V & 240V to Special Order)
Waveform Sine Wave
Output
Connectors
2 x IEC320
(10 Amp) Hardwire
Harmonics <3% of THD for Linear Load
Speed of
Correction
Ultra-Fast – Within 200 milliseconds
(0.2 Seconds)
Power
Factor
No effect on performance providing the Stabiliser
is being used within its rated capacity
Frequency 50 / 60 Hz (what goes in comes out)

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2.3 Metering, Status Indicators, Alarms & Communication
Model No PWM
2.1H-S25
PWM
3.5H-S25
PWM
5.25H-S25
PWM
7H-S25
PWM
10.5H-S25
PWM
14H-S25
Digital
Metering
Input & Output Volts (V)
Input & Output Frequency (Hz)
Internal Temperature (°c)
Load Current (Amps)
Load Level Indicator (%)
Status
Indicators Line, Normal, Bypass & Fault
Audible
Alarms Fault & Over Voltage
Comms RS-232
2.4 Protection
Model No PWM
2.1H-S25
PWM
3.5H-S25
PWM
5.25H-S25
PWM
7H-S25
PWM
10.5H-S25
PWM
14H-S25
Over
Current Input & Output Breakers – as Standard
Overload More than 105% Output Automatically Disconnected – requiring Manual Restart
Under & Over
Voltage
Automatic Disconnect requiring Manual Restart
(Output Under Limit 188V ±4V / Over Limit 270V ±4V)
Over
Voltage
Surge
Protection
MOV (Varistor)
Noise
Protection EMI Filter
Manual
Bypass NO YES – inbuilt as Standard

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2.5 Environment
Model No PWM
2.1H-S25
PWM
3.5H-S25
PWM
5.25H-S25
PWM
7H-S25
PWM
10.5H-S25
PWM
14H-S25
Operating
Temp
Range
0 to 40ºc
Derate by 2% for each additional ºc up to a max. of 60 ºc
Maximum
Altitude
2000 metres
Derate by 1% for each additional 100 metres
Relative
Humidity
Suitable for indoor use up to 90% Relative Humidity
(non-condensing).
Audible
Noise <50 dBA (@1 Metre)
2.6 Physical
Model No PWM
2.1H-S25
PWM
3.5H-S25
PWM
5.25H-S25
PWM
7H-S25
PWM
10.5H-S25
PWM
14H-S25
Construction Freestanding Enclosures to IP20 (NEMA 1 Style) - BS/EN 60529
Colour RAL 7047 (Telegray 4)
Physical Size 258(W) x 333(H) x 422(D) mm 258 (W) x 546(H) x
532(D) mm
Weight 23 Kg 29 Kg 30 Kg 32 Kg 58 Kg 62 Kg
Packed Size 38.1 (W) x 44.5(H) x 54(D) cm 40.2 (W) x 78(H) x
68(D) cm
Packed
Weight 25.5 Kg 31.5 Kg 32.5 Kg 34.5 Kg 68.5 Kg 72.5 Kg
2.7 Certification & Compliance
Model No PWM
2.1H-S25
PWM
3.5H-S25
PWM
5.25H-S25
PWM
7H-S25
PWM
10.5H-S25
PWM
14H-S25
EMC
Compliance
Complies with BS/EN 55022 & the relevant part of
BS/EN 61000 Standards
CE
Certification
CE Marked – being fully compliant with European Union Directives
2014/30/EU (The EMC Directive) and
2014/35/EU (The Low Voltage Directive)

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2.8 Warranty
Model No PWM
2.1H-S25
PWM
3.5H-S25
PWM
5.25H-S25
PWM
7H-S25
PWM
10.5H-S25
PWM
14H-S25
Standard
Warranty 24 Months / 2 Years

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3. Safety Instructions
Read and follow all Safety Instructions
Please save these instructions for future reference
3.1 Introduction
These instructions are addressed to the installer and End User / Operator
of the PWM SERIES of Single Phase Static Digital AC Voltage Stabilisers. We
strongly suggest you keep this manual next to the equipment for future
reference.
3.2 General Installation & Usage
Do not use the Stabiliser for other than the intended use.
Do not install Stabiliser in back feed circuits, such as solar panel and wind
turbine applications, where the energy is supplied back to the grid, nor
should the input voltage supply be connected to the output of stabiliser.
If on delivery there is evidence of visible damage, do not attempt to install
or start the Stabiliser. Advise the transport delivery company and inform
VSi, or the resale partner from whom you purchased the equipment.
The Stabiliser can contain potentially dangerous voltages – up to 300V AC.
As there are no user replaceable components, once installed there should
be no reason to remove the protective covers. If the covers are removed,
use extreme caution and do not leave the unit unattended with the covers
off.
Hazardous voltages can be present at the unit’s output any time AC input
power is applied. To avoid possible personal injury, or equipment
damage, and to make certain there is no output voltage, turn the unit off
and disconnect the AC Input.
To reduce the risk of fire, or electrical shock, install the unit in an indoor
area free from conductive contaminants.

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Do not use outdoors.
Do not place the unit near water or liquids, gas and combustible materials
or in an excessively humid environment where condensation is very likely
to occur.
To reduce the risk of overheating, do not block the unit’s ventilation
panels and try to avoid positioning the unit in direct strong sunlight or
close to other heat sources.
Do not allow liquids or foreign object to enter the unit.
The installation and use of this product must comply with all relevant
current electrical installations that are in force in the territory of
installation.
Where the system is required to be hardwired into the input utility mains
supply we would strongly suggest that a qualified electrician should install
the equipment. The electrician should install the AC input accordingly to
the instructions contained in this manual. Standard safety practices
should be followed at all times.
The unit must be grounded / earthed at all times when in use.

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4. Visual External Appearance
4.1 Front View
4.1.1 Model: PWM-2.1H-S25 to PWM-7H-S25

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4.1.2 Model: PWM-10.5H-S25 to PWM-14H-S25

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4.2 Rear View
4.2.1 Model: PWM-2.1H-S25

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4.2.2 Model PWM-3.5H-S25 – PWM-7H-S25

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4.2.3 Model PWM-10.5H-S25 – PWM-14H-S25 (on Castors)

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4.3 Front Display Panel
In normal running mode both the ‘LINE’ and ‘INV’ Status Indicators should
be illuminated.
4.3.1 Status Indicators
All Okay – in line mode
In Bypass Mode
Stable Output Voltage
Output Overload or an Abnormal Condition
exists

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4.3.2 Digital Metering
Press and hold down the ‘SELECT’ Control Button for 1.5 seconds
to change the displayed reading.
Holding down the ‘SELECT’Control Button will enable an
automatic rotation of the available readings.
Releasing the ‘SELECT’Control Button will stop the rotation at the
required reading.
Available Readings are
Input Voltage
(I/P Vac)
Voltage level of the incoming
utility mains supply
Output Voltage
(O/P Vac)
Output Voltage delivered by
the system.
Input Frequency
(I/P Hz)
Frequency of the incoming
utility mains supply
Output Frequency
(O/P Hz)
Output Frequency delivered
by the system.
Load Current
(O/P)
Power (Amps) drawn by the
connected load.
Temperature
(ºC)
Internal Temperature of the
system
Please Note: The multifunctional display is for indication
purposes only and may not display the exact voltage and current
readings as seen by a calibrated multi-meter, but should be
within an accuracy of ±5%.

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4.3.3 Load Level Indication
In addition to load current readings the display panel also shows
below the digital metering in the form of a bar graph percentage
load readings.

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5. Installation & Operation Instructions
5.1 Unpacking & inspection
If on delivery there is evidence of visible damage, do not attempt to
install or start the Stabiliser. Advise the transport delivery company and
inform VSi, or the resale partner from whom you purchased the
equipment.
After unpacking and removing the polystyrene protective packaging
from the PWM SERIES unit, inspect the ventilation slots to ensure that
they are free from all obstruction. Use a vacuum cleaner to dislodge any
obstructions.
We would suggest you retain the packing carton and packaging material
to return the PWM SERIES Stabiliser in the unlikely event of its
operational failure.
5.2 Positioning
Although the Stabiliser does not produce excessive heat, you should
ensure that it is positioned so that a free flow of air allows the unit to
cool. To reduce the risk of overheating, do not block the unit’s ventilation
panels and try to avoid positioning the unit in direct strong sunlight or
close to other heat sources.
The Stabiliser is intended for indoor use only. Do not install inside a
closed cupboard and do not allow papers, or other materials, to be piled
on top of the enclosure.
Do not place the unit near water or liquids, gas and combustible
materials or in an excessively humid environment where condensation
is very likely to occur.

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5.3 Hardwire Installation
Models PCM-3.5H-S25 to PCM-14H-S25
Remove Terminals Connection Cover Plate.
Ensure supply is isolated before making connections.
Connect the Input Cable to the terminal block (as indicated) and take
to mains supply via cable entry access hole in the enclosure.
Connect the Output Cable to the terminal block (as indicated) and
take to the load via the relevant cable access hole in the enclosure.
Check all wires are properly secured (using glanding – as
appropriate), connections are tight and cables are correctly wired
before switching on.
Refit Terminals Connection Cover Plate