VSI PWM 2.1H-S25, PWM Series, PWM 5.25H-S25, PWM 3.5H-S25, PWM 7H-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

Page

1

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: [e-mail]
General: [e-mail]
Support: [e-mail]

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Table of Contents

1.1

Overview

…………………………………………………………………

……………..

3

1.2

Basic Principle of Op

eration

……………………………………

……………..

3

2.1

Input

………………………………………………………………………………………

4

2.2

Output

……………………………………………………………………………………

4

2.3

Metering, Status Indicators, Alarms & Communication

………….

5

2.4Protection

………………………………………………………………………………

5

2.5

Environment

…………………………………………………………………………..

6

2.6

Physical

………………………………………………………………………………….

6

2.7

Certification & Compliance

…………………………………………………….

6

2.8

Warranty

………………………………………………………………………………..

7

3.1

Introduction

…………………………………………………………………………..

8

3.2

General Installation and Usag

e

………………………………………………

8

4.1

Front View

…………………………………………………

……………………………

10

4.2

Rear View

……………………………………………………………………………….

1

2

4.3

Display View

…………………………………………………………………………..

1

5

5.1

Unpacking & Inspection

………………………………………………………...

185.2

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

……………………………………………………

…22

7.1

Warranty

………………………………………………………………………………..

2

7

7.2

Returns Procedure

…………………………………………………………………

2

8

Pages

1. Introduction ………………………………………………………………………. 3

2. General Specification ………………………………………………………… 4-7

3. Safety Instructions …………………………………………………………….. 8-9

4. Visual External Appearance ………………………………………………. 10-17

5. Installation & Operating Instructions ………………………………… 18-22

6. Troubleshooting ………………………………………………………………… 23-26

7. Warranty & Returns …………………………………………………………… 27-28

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Page

3

1. Introduction

1.1 Overview

PWM SERIESmicroprocessor 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

Input
Voltages

PWM

2.1H-S25

PWM

3.5H-S25

220V - 230V - 240V AC Single Phase, 2 Wire (L, N & G/E)

PWM

5.25H-S25

PWM

7H-S25

PWM

10.5H-S25

PWM

14H-S25

Voltage
Range

Max Input
Current

Input
Connectors

Operating
Frequency

13 Amps 21 Amps 32 Amps 42 Amps 63 Amps 84 Amps

IEC 320
(16 Amp)

230V ±25% (173V to 287V) AC Single Phase, 2 Wire (L, N & G/E)

(220V & 240V to Special Order)

Hardwire

50 / 60 Hz

2.2 Output

Model No

Max Output
Rating

Output
Voltage

Waveform

Output
Connectors

Harmonics <3% of THD for Linear Load

PWM

2.1H-S25

2.1

kVA/kW

2 x IEC320
(10 Amp)

PWM

3.5H-S25

3.5

kVA/kW

230V ±1%, Single Phase, 2 Wire (L, N & G/E)

PWM

5.25H-S25

5.5

kVA/kW

(220V & 240V to Special Order)

Sine Wave

Hardwire

PWM

7H-S25

7.0

kVA/kW

PWM

10.5H-S25

10.5

kVA/kW

PWM

14H-S25

14.0

kVA/Kw

Speed of
Correction

Power
Factor

Frequency 50 / 60 Hz (what goes in comes out)

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Ultra-Fast – Within 200 milliseconds

(0.2 Seconds)

No effect on performance providing the Stabiliser

is being used within its rated capacity

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2.3 Metering, Status Indicators, Alarms & Communication

Model No

Digital
Metering

Status
Indicators

Audib le
Alarms

Comms RS-232

PWM

2.1H-S25

PWM

3.5H-S25

PWM

5.25H-S25

Input & Output Volts (V)

Input & Output Frequency (Hz)

Internal Temperature (°c)

Load Current (Amps)

Load Level Indicator (%)

Line, Normal, Bypass & Fault

Fault & Over Voltage

PWM

7H-S25

PWM

10.5H-S25

2.4 Protection

Model No

Over
Current

Overload More than 105% Output Automatically Disconnected – requiring Manual Restart

Under & Over
Voltage

Over
Voltage
Surge
Protection

Noise
Protection

PWM

2.1H-S25

PWM

3.5H-S25

Input & Output Breakers – as Standard

Automatic Disconnect requiring Manual Restart

(Output Under Limit 188V ±4V / Over Limit 270V ±4V)

PWM

5.25H-S25

MOV (Varistor)

EMI Filter

PWM

7H-S25

PWM

10.5H-S25

PWM

14H-S25

PWM

14H-S25

Man ual
Byp ass

NO YES – inbuilt as Standard

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2.5 Environment

Model No

Operating
Temp
Range

Maximum
Altitude

Relative
Humidity

Audible
Noise

PWM

2.1H-S25

PWM

3.5H-S25

Derate by 2% for each additional ºc up to a max. of 60 ºc

Derate by 1% for each additional 100 metres

Suitable for indoor use up to 90% Relative Humidity

PWM

5.25H-S25

0 to 40ºc

2000 metres

(non-condensing).

<50 dBA (@1 Metre)

PWM

7H-S25

PWM

10.5H-S25

2.6 Physical

Model No

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

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

PWM

2.1H-S25

PWM

3.5H-S25

PWM

5.25H-S25

PWM

7H-S25

PWM

10.5H-S25

258 (W) x 546(H) x

40.2 (W) x 78(H) x

PWM

14H-S25

PWM

14H-S25

532(D) mm

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

EMC
Compliance

CE

Certification

PWM

2.1H-S25

CE Marked – being fully compliant with European Union Directives

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PWM

3.5H-S25

Complies with BS/EN 55022 & the relevant part of

2014/35/EU (The Low Voltage Directive)

PWM

5.25H-S25

BS/EN 61000 Standards

2014/30/EU (The EMC Directive) and

PWM

7H-S25

10.5H-S25

PWM

PWM

14H-S25

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7

2.8 Warranty

Model No

Standard
Warranty

PWM

2.1H-S25

PWM

3.5H-S25

PWM

5.25H-S25

24 Months / 2 Years

PWM

7H-S25

PWM

10.5H-S25

PWM

14H-S25

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8

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.

PWM SERIES - User Manual

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