The Sollatek Automatic Voltage Switcher (AVS)

TM
THE SOLLATEK AUTOMATIC VOLTAGE SWITCHER (AVS) RANGE
Instruction manual
AVS 13/15 MICRO
AVS 13RL MICRO
AVS30 MICRO
AVS100
AVS3P-0
AVS303
Important: This manual contains important safety instructions.
Keep this manual handy for reference.
INTRODUCTION
Without doubt, power interruptions cause major problems for home and business
computing. An unpredictable power supply can lead to worrying problems such as
surges, spikes, lightning strikes, brown-outs, power-cuts (black-outs), power-back
surges, mains over-voltage, and complete failure - all of which can damage electrical
and electronic equipment. If any of these should occur, there’s a strong chance you
will suffer from loss of critical data, lowered productivity and even damage to your
expensive equipment.
Sollatek encompasses a wide range of power protection products for use in many
different industries where clean, regulated mains power is critical to their continued
operation.
For more information on our range of power protection products, contact us now.
TM
SOLLATEK (UK) LTD
UNIT 10 POYLE 14 INDUSTRIAL ESTATE,
NEWLANDS DRIVE, POYLE,
SLOUGH SL3 0DX,
UNITED KINGDOM
Tel: International +44 1753 688300 National 01753 688300
Fax: International +44 1753 685306 National 01753 685306
E-mail: sales@sollatek.com
www.sollatek.com
2
THE SOLLATEK
AUTOMATIC VOLTAGE SWITCHER (AVS) RANGE
The Sollatek Automatic Voltage Switcher (AVS) range prevents damage to
equipment from over and under voltage levels of any duration. They work by
disconnecting power when voltage levels exceed set parameters. Reconnection
takes place when power returns to normal.
Fully automatic in operation. All these products provide power-back surge
protection as standard by their in-built start-up delay and voltage monitoring.
Additionally, all models include surge and spike protection.
Contents
The Sollatek AVS13/13RL/15 micro
p.4-5
The Sollatek AVS30 micro
p.6-9
The Sollatek AVS100
p.10-11
The Sollatek AVS3P-0
p.12-13
The Sollatek AVS303
p.14-15
Comparison chart
p.16-17
Power problems
p.18-19
3
AVS13 micro, AVS13 RL micro, AVS15 micro
The AVS is an Automatic Voltage Switcher rated at 13 Amps
(AVS13) or 15Amps (AVS15). The AVS will switch off the equipment
connected to it if the mains power goes outside preset acceptable
limits and will re-connect -automatically* - when the mains power
returns to normal. Re-connection takes place after a delay to ensure
stability of the mains.
This new version of the AVS has a built-in micro-processor that has
added advanced features to the product. These include;
1) Five voltage indicators
The power supply is good and the load is connected
Hi The AVS has detected that the mains voltage is too high
and therefore dangerous to your equipment. The AVS
has disconnected the power supply .
Power supply has returned to normal (after an overvoltage condition - see above). The AVS is waiting before
the power supply is restored to your equipment.
Power supply has returned to normal (after an undervoltage condition - see below). The AVS is waiting before
the power supply is restored to your equipment.
Lo The AVS has detected low voltage condition and has
disconnected the power to your equipment to protect
against it.
* unless set to MANUAL on the Time delay Dial
2) Time Delay dial
By adjusting the dial, you can set the start-up delay (after first connecting and after re-connection
in case of over or under-voltage) from 15 Seconds to 3 minutes (AVS13) or 1.5 minute to 5 minutes
(AVS15). Alternatively you can pre-set to MANUAL. MANUAL indicates that the AVS will not connect
your load until you press the LOAD ON/OFF switch.
Tip: Use MANUAL setting if you do not want equipment to automatically re-start for example if you
do not wish the Air-conditioner to re-connect automatically after a power cut.
3) LOAD ON/OFF Switch
Using this button,
you can switch your equipment on or off. If the switch is in the off position
(Light bulb off), press the switch to turn the equipment on. PLEASE NOTE THAT THE EQUIPMENT
WILL BE CONNECTED AFTER THE DELAY HAS PASSED AS SET BY THE TIME DELAY DIAL.
4
SPECIFICATIONS
Model
AVS13
AVS13RL
Current (Amps)
Nominal voltage(V)
Wait time (mins)
13
13
230
230
adjustable
adjustable
15 secs-3mins
15 secs-3mins
Under-voltage disconnect(V)
185
185
Over-voltage disconnect(V)
260
260
Hysteresis(V)
3-7
3-7
Socket type
UK13A (BS1363) UK13A (BS1363)
Fused plug
Yes 13Amp
Yes 13Amp
RFI protection
Attenuation(db)
Transient suppression
Spike protection(J)
AVS15
AVS15E
15
230
adjustable
1.5mins-5mins
185
260
3-7
UK15A (BS546)
No
15
230
adjustable
1.5mins-5mins
185
260
3-7
UK15A (BS546)
No. 18A Circuit
breaker on unit
No
N/A
No
N/A
Yes
No
20@100Khz,50@1Mhz
N/A
35@10Mhz
Yes(>6.5kA)
Yes(>6.5kA)
Yes(>6.5kA)
160
160
160
Yes(>6.5kA)
160
OPERATION:
1. Make sure that your load does not exceed the rating of the AVS.
2. The limits of the AVS are pre-set at the factory (i.e. The AVS13 is 185-260 volts).
If different limits are required, please refer to your dealer.
3. The AVS15 is supplied with a lead only. Connect a suitable plug and fuse to the lead, and plug in
to the mains.
4. Plug your appliance into the AVS.
5. The LEDs on the front indicate the state of the AVS (see facing page for full details).
6. It is recommended that the AVS is kept switched on, and the appliance switched on and off to
prevent activating the time delay every time the appliance is switched on.
7. The plug connected to the AVS13 is fused at 13Amps. If the unit stops working and no LEDs are
lit on the front of the unit check that the fuse is intact. If not, replace with a 13Amp HBC fuse.
The AVS15E has a 18amp circuit breaker located on the side of the unit. Press to reset.
Caution: Before replacing fuse or resetting the circuit breaker, ensure that the load does not exceed
the recommended rating of the AVS.
5
AVS30 micro
The AVS30 micro is an Automatic Voltage Switcher rated at 30 Amps. The
AVS will switch off the equipment connected to it if the mains power goes
outside pre-set acceptable limits, and will reconnect automatically when
the mains power returns to normal. Reconnection takes place after a
delay, to ensure stability of the mains.
The new version of the AVS has a built-in microprocessor that adds
advanced features. These include:
OFF
Five LEDs accurately display the status
of the AVS in the following symmetrical
traffic light design:
Wait
HIGH
ON
Wait
OFF
LOW
LED Colour
Indicating
Red
High incoming voltage
Load Status
OFF
Yellow
AVS is in wait state after a high voltage transition
OFF
Green
Mains normal
ON
Yellow
AVS is in wait state after a low voltage transition
OFF
Red
Low incoming voltage
OFF
By adding microprocessor control to the AVS30, you can enjoy advanced functions which include;
* Variable time delay
* Variable Low voltage disconnect level
* Variable High voltage disconnect level
* Variable Blind time. Response time to under voltage disconnect.
All these new features can be set at installation time.
* The AVS30 Micro has a reset button on the front panel. This button will eliminate the delay time.
* 5 LEDs to indicate the state of the mains supply.
OPERATION
1. Make sure that your load does not exceed the rating of the AVS which is 30Amps.
2. The limits of the AVS as a standard are set for a window of 190-260 volts.
3. The AVS has to be wired to the mains supply and to the equipment it is supplying.
Please refer to the wiring diagram on page 9.
4. On first switching on, there will be no output for the wait time of approximately three minutes
while the AVS monitors the mains.
6
a) To by-pass the wait time, press the re-set button on the front panel of the AVS30.
b) If a different wait time is required, then change the settings on potentiometer marked
WAIT. Settings are available in increments up to 10 minutes.
You can also set the WAIT dial to MAN. While on MAN the AVS30 will not reconnect the mains
unless the Reset button is pressed. For that period the yellow LED indicates that the mains are
within acceptable limits, after which the green LED goes on and the load is connected.
5. A different blind time can be set if a different undervoltage disconnect limit is required.
Under voltage blind time means the AVS ignores any undervoltage conditions during this time.
The AVS will not switch off unless the under voltage last longer than the blind time.
6. It is recommended that the AVS is kept switched on, and the appliance switched on and off to
prevent activating the time delay every time the appliance is switched on.
SPECIFICATIONS
Model AVS30micro
Current (Amps)
Nominal voltage(V)
Wait time (mins)
Under-voltage disconnect(V)
Over-voltage disconnect(V)
Hysteresis(V)
Socket type
Fused plug
RFI protection
Transient suppression
Spike protection(J)
110V
230V
30
110
10 secs to 10mins+manual
75-110
110-150+off
3-5
direct via brass screw terminal
N/A
No
Yes >6.5kA
80
30
230
10 secs to 10mins+manual
150-230
230-300+off
3-5
direct via brass screw terminal
N/A
No
Yes >6.5kA
160
7
CONNECTION:
CAUTION: IF THE AVS IS ALREADY WIRED, MAKE SURE IT IS DISCONNECTED FROM THE MAINS
BEFORE YOU DO ANY OF THE FOLLOWING;
1. Remove the bottom cover to obtain access to connection terminals. To remove bottom cover
remove the two white caps and then undo the two screws.
2. Remove the two cable glands and then re-insert them so that the cable gland is external.
3. Insert cable from the mains supply through the cable glands of the AVS30 and connect to the
Connector terminals. (Refer to connection terminals layout diagram on next page).
4. Insert cable to appliance through the Cordgrip Bush and connect to the Connector terminals
5. Tighten the Cordgrip Bushes and return the front cover and two screws and screw caps.
PLEASE ENSURE NOT TO TIGHTEN CONNECTION TERMINALS EXCESSIVELY.
NOTES:
* In the upper compartment of the AVS, you will find a fuse (see diagram overleaf). The fuse is
not for the load. It is a spike protection fuse. Replace if it gets damaged. (0.5A Anti Surge).
To gain access to the upper compartment, ENSURE THAT THE AVS30 IS NOT CONNECTED TO
THE MAINS. Remove the screws from the back.
* The AVS must be mounted securely on a wall. Place it over one screw at the top and then use
the two mounting holes in the terminal compartment.
* The supply to the AVS30 must be fitted with a 30A HBC fuse or less.
8
AVS30 CONNECTION TERMINALS LAYOUT
AVS30 INPUT
L (Live)
to L
N (Neutral) to N
E (Earth)
to E
AVS30 OUTPUT
L (Live)
to L out
N (Neutral) to N out
E (Earth)
to E out if used
spike protection fuse
9
AVS100
The is AVS100 is an Automatic Voltage Switcher rated at 100 Amps.
If the voltage goes above or below the pre-set limits (the ‘window’), then the
AVS100 will switch off. Once the voltage returns within the window limits,
the AVS will wait for a pre-set time, continuing to check the voltages, before
automatically turning the load back on.
OPERATION
1. Make sure that your load does not exceed the rating of the AVS. (100 Amps for the AVS100).
2.
The limits of the AVS are set for a window of 190-260 volts. If a different window is required,
please refer to your dealer.
3.
The AVS has to be wired to the mains supply and to the equipment it is supplying. Please refer
to the wiring diagram on the opposite page.
4.
On first switching on, there will be no output for the wait time of approximately three minutes
while the AVS monitors the mains. If a different wait time is required, please refer to your
dealer. For that period the yellow LED indicates that the mains are within acceptable limits,
after which the green LED goes on and the load is connected. The red LED indicates that the
mains supply is outside the window, and the load is disconnected.
5.
It is recommended that the AVS is kept switched on, and the appliance switched on and off to
prevent activating the time delay every time the appliance is switched on.
SPECIFICATIONS
Model AVS100
Current (Amps)
Nominal voltage(V)
Wait time (mins)
Under-voltage disconnect(V)
Over-voltage disconnect(V)
Hysteresis(V)
Socket type
Fused plug
RFI protection
Transient suppression
Spike protection(J)
110V
230V
100
110
3 mins
92
132
3-5V
direct via brass screw terminal
N/A
No
Yes >6.5kA
80
100
230
3 mins
185
265
3-5V
direct via brass screw terminal
N/A
No
Yes >6.5kA
160
10
CONNECTION:
CAUTION: IF THE AVS IS ALREADY WIRED, MAKE SURE IT IS DISCONNECTED FROM THE MAINS
BEFORE YOU DO ANY OF THE FOLLOWING;
1.
2.
Remove the bottom cover to obtain access to connection terminals. To remove bottom cover
remove the two white caps and then undo the two screws.
Insert cable from the mains supply through the the grommets of the AVS100 and connect to
the Connector terminals. (Refer to wiring diagram below)
AVS100 INPUT
L (Live)
N (Neutral)
3.
Live in
Neutral
Insert cable to appliance through the Cordgrip Bush and connect to the Connector terminals
AVS100 OUTPUT
L (Live)
N (Neutral)
4.
to
to
to
to
Live out
Neutral
Tighten the Cordgrip Bushes and return the front cover and two screws and screw caps.
PLEASE ENSURE NOT TO TIGHTEN CONNECTION TERMINALS EXCESSIVELY.
NOTES:
*
The fuse in the terminal compartment is not for the load. It is a spike protection fuse.
Replace with 4Amp anti-surge 20x5mm fuse.
*
The AVS must be mounted securely on a wall. Place it over one screw at the top and then
use the two mounting holes in the terminal compartment.
*
The supply to the AVS100 must be fitted with a 100A fuse or less.
*
The earth cable should be taken from the incoming supply directly to the appliance or
distribution board. The AVS100 itself does not require an Earth. Beware of high speed cooling
fan which may switch on at any time.
AVS100 CONNECTION DIAGRAM
LIVE IN
LIVE IN
NEUTRAL IN
EARTH
NEUTRAL
LIVE OUT
LIVE OUT
NEUTRAL OUT
EARTH
11
AVS3P-0
The AVS3P-0 is an Automatic Voltage Switcher designed to protect three
phase loads from voltage fluctuations, over voltage, under voltage, surges,
dips and frequent start/stops. The output is a single volt-free changeover
contact, rated at 16A. This is intended to control an external contactor,
control circuit, start/stop system or alarm. If the voltage on any one phase
goes above or below the pre-set limits (the ‘window’), then the AVS
will switch off. Once the voltage returns within the window limits, the
AVS will wait for a pre-set time, continuing to check the voltages, before
automatically turning the load back on. The over voltage, under voltage and
delay settings are all adjustable using controls in the terminal compartment
of the AVS3P. The standard window that is considered acceptable is 185V-260V(320V-450V three
phase). Outside these limits electronic and electrical equipment are likely to be damaged.
OFF
Five LEDs accurately display the status
of the AVS in the following symmetrical
traffic light design:
Wait
HIGH
ON
Wait
OFF
LOW
LED Colour
Indicating
Red
High incoming voltage
Load Status
OFF
Yellow
AVS is in wait state after a high voltage transition
OFF
Green
Mains normal
ON
Yellow
AVS is in wait state after a low voltage transition
OFF
Red
Low incoming voltage
OFF
OPERATION
1. Connect the AVS in accordance with the wiring diagram opposite (fig 1). Ensure that the R, S
& T sensing connections to the AVS come from the supply side of the contactor. Note: a good
neutral connection must be provided from the supply.
2.
The output from the AVS is a changeover relay with volt-free contacts. There is a common (C),
a normally open (NO) and normally closed (NC) contacts. When the AVS3P-0 is in the Red or
Amber condition then C is connected to NC. When the AVS3P-0 displays Green then C is
connected to NO. Make sure that the control current you wish to switch does not exceed the
rating of the AVS3P-0 relay (max 16Amps).
3.
If the AVS is the only thing to control the contactor (or load, or alarm, etc), then the ‘C’ and ‘NO’
AVS contacts can be used to connect power to the contactor coil (method A). If however, there
are other circuits/equipment that also must control the contactor, then the AVS contacts can be
used to interrupt the contactor coil supply from there (method B) or used in conjunction with a
start/stop or other system, e.g. method C.
12
4.
Set limits of the AVS3P-0 using the thumb-wheel adjustment inside the terminal compartment.
See fig 2. Ensure that limits set are safe for the load being protected. For example: Low =185V
and High = 260V is normally considered safe for most equipment but you should check with the
equipment manufacturer’s information.
5.
Set the time delay control using the thumb-wheel adjustment inside the terminal compartment.
This will depend on your load and how it is operated. As a general guide, compressors and
refrigeration equipment will need at least 3 minutes; motors, pumps, etc should not be started
too frequently so may be 2 minutes minimum, electronic loads 0.5 minutes. The ‘Off’ position
gives just 10 seconds. The equipment manufacturer should be consulted on the best setting.
6.
At first switching on, there will be no output during the Delay period. For that period the yellow
LED indicates that the mains supply is within acceptable limits, after which the green LED goes
on and the output relay changes state to turn the load on.
SPECIFICATIONS
Model AVS3P-0
115V
Current (Amps)
Nominal voltage(V)
Wait time (mins)
Window limits
Hysteresis(V)
Socket type
Fused plug
RFI protection
Attenuation(db)
Transient suppression
Spike protection(J)
Max consumption
Max supply (phase to neutral)
(Option B)
N C N R S T N
O
C
Live from
other control
(Option C)
N C N R S T N
O
C
To Stop Control
From 24V DC
To Start Control
16A@230V
16A@230V
115/200V
230/240V
10 secs to 10mins
10 secs to 10mins
adjustable
adjustable
4
4
direct via brass screw terminal
N/A
N/A
No
No
No
No
Yes
80J@115V
160J@230V
35VA
35VA
140/243V
280/485V
AVS3P-0
L1 L2 L3
(Option A)
Live to Contactor Coil
240V
Contactor
N C N R S T N
O
C
A2
A1
N
T1 T2 T3
Diagram three
Three Phase Sense Wires
Switched Live to Contactor Coil
13
To The Load
Figure 1.
AVS3P-0
wiring
diagram
AVS303
The AVS303 is a Three Phase Automatic Voltage Switcher which
protects against over voltage and under voltage on any one of the
three phases as well as loss of one or more phases. Indication and/or
disconnection as a result of mains frequency error of phase sequence
error is available as an option.
The VS303 incorporates a contactor to switch the full load current.
The AVS303-xx is available in different sizes ranging from 23Amps to
1250Amps (the -xx relates to the model number, ie: AVS303-23 is a 23Amp
per phase AVS303).
The options for the AVS303 are:
Frequency error (OPT/01)
Phase sequence error (OPT/02)
Or both (OPT/03)
OPERATION
1. Make sure that your load does not exceed the rating of the AVS303.
2.
The limits of the AVS303 are set for a window of 190-260 volts line to neutral. If a
different window is required, please refer to your dealer.
3.
If an option board is fitted please ensure the d.i.l. switches are set correctly as
detailed in the separate instructions.
4.
Connections of the three phases from the mains (INCOMING CABLE) and to the
load (OUTGOING CABLE) are made to the contractor.It is essential that the incoming
NEUTRAL is connected to the terminal block.
5.
On first switching on, there will be no output for approximately one minute while
the AVS303 monitors the mains. For that period the yellow LED indicates that the mains are
within acceptable limits, after which the green LED goes on and the load is connected. The red
LED indicates that the mains is outside the window, and the load is disconnected.
6.
Frequency and Phase Error indications, where fitted, are by separate red LEDs.
14
SPECIFICATIONS
AVS303
Model AVS303
Current (Amps)
Nominal voltage(V)
Wait time (mins)
Under-voltage disconnect(V)
Over-voltage disconnect(V)
Hysteresis(V)
Socket type
Fused plug
RFI protection
Transient suppression
Spike protection(J)
23 to1250
230
60 secs
190V
260V
4
direct via brass screw terminal
N/A
No
Yes >6.5kA
160
RED = phase 1
YELLOW = phase 2
BLUE = phase 3
WIRING
From the incoming mains:
1. Connect Neutral to the Neutral on the terminal block
2. Connect Phase 1 to where the RED WIRE is connected on the contactor
3. Connect Phase 2 to where the YELLOW WIRE is connected on the contactor
4. Connect Phase 3 to where the BLUE WIRE is connected on the contactor
For the outgoing mains: mirror the above connections.
15
SOLLATEK PRODUCT RANGE COMPARISON CHART
The following chart
gives an overview
of most of the
Sollatek range of
products and the
protection they
offer.
Spike
/surge
HivoltGuard
✓
FridgeGuard
✓
VoltGuard
✓
Automatic Voltage Switcher AVS13
✓
Automatic Voltage Switcher AVS13L
✓
Automatic Voltage Switcher AVS15
Automatic Voltage Switcher AVS30
Energy Saving Protector ESP30
RFI
Over
Voltage
Brownout
✓
Basic
Lightning
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
Automatic Voltage Switcher AVS100
✓
✓
FaxGuard
✓
✓
Automatic Voltage Switcher AVS303
✓
✓
✓
Automatic Voltage Switcher AVS3P-03
✓
✓
✓
In line Surge protector ISP
✓
✓
✓
✓
✓
Surge plug
✓
✓
Surge strip
✓
✓
SpikeGuard
✓
PureAC
✓
Distribution Surge protector DSP3
✓
✓
✓
✓
✓
LineGuard
CommsGuard
✓
Sollatek Voltage Switcher SVS
✓
Sollatek Voltage Switcher SVS (ER)
✓
Automatic Voltage Regulator AVR
✓
Automatic Voltage Regulator AVR (ER)
✓
Automatic Voltage Regulator (3 phase)
✓
Ultima UPS
✓
Optima UPS
✓
16
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
✓
Power
Cuts
Power-back
surges
Amps
Single
Phase
✓
5
✓
Plug/socket
✓
5
✓
Plug/socket
✓
5
✓
Plug/socket
✓
13
✓
Plug/socket
✓
13
✓
Plug/socket
✓
15
✓
Plug/socket
✓
30
✓
Direct wiring
✓
30
✓
Direct wiring
✓
100
✓
Direct wiring
5
✓
Plug/socket+data
✓
Telecom surge/
spike & lightning
✓
Three
Phase
Connection
✓
23 to 1250
✓
3 phase
✓
unlimited
✓
3 phase
10
✓
IEC
13
✓
13 Amp plug
13
✓
Plug/socket
13
✓
Plug/socket
3 to 13
✓
unlimited
✓
✓
5
Plug/socket+data
1 to 75
✓
Plug/socket+Direct wiring
1 to 15
✓
Plug/socket
1 to 400
✓
Plug/socket+Direct wiring
1 to 10
✓
20 to 700/phase
✓
Direct wiring
data only
✓
✓
Plug/socket
✓
Plug/socket
✓
3 phase
✓
✓
✓
1 to 20
✓
IEC
✓
✓
✓
1 to 20
✓
IEC
17
age
POWER PROBLEMS
AND THEIR ASSOCIATED CAUSES
All electrical and electronic equipment, connected to the mains supply is at risk of
being damaged from spikes, surges, lightning, brown-outs, power-cuts (blackouts),
power back surges, and over-voltage. The following is a summary of the main types of
power problems, causes and how these affect electrical and electronic equipment.
ts
t
ck surge
age
ts
t
ck surge
age
ts
age
Spikes/Surge: Very short, (one millisecond) event of very high surge in voltage to thousands
of volts and amps. Spikes are common in all parts of the world and repeated exposure to
spikes will damage electronic equipment and corrupt data.
What causes it? Switching on/off of nearby equipment, lightning, motors starting etc.
RFI (Radio Frequency Interference)/Noise: High frequency disturbances that occur within a
short period of time (milliseconds). RFI & noise are very common in all parts of the world and
are the main cause of data corruption.
What causes it? Generated by high frequency noise from nearby equipment like TV, radio equipment,
transmitters, mobile phones, switching on/off of certain loads, fluorescent lights, motor speed controls,
light dimmers.
Over-Voltage: Long duration (milliseconds, seconds, minutes, hours or days) rise in the
voltage above acceptable limits. Depending on the level of the over-voltage, the damage can
be instantaneous, severe and irreparable.
What causes it? On return of mains supply after power cuts, under-sized utility oscillating between
periods of brown-outs and over-voltage or accidental (e.g. accidental connection between two
phases).
t
ts
ck surge
t
ck surge
Brown-Out: Long duration of low voltage (milliseconds to seconds, minutes, hours or days).
Very common in parts of the world especially where the power utilities are over-stretched.
Prolonged and frequent brownouts cause the equipment to malfunction or not work at all.
Repeated episodes are certain to cause damage. Motors and compressors (and therefore fridges,
freezers, coolers, air-conditioners and pumps) are especially at risk. In time, damage is certain.
What causes it? Most commonly an over-stretched utility, especially in areas of poor power
distribution infra-structure and remote areas. Common in dry seasons where water is used for
electricity generation.
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age
ts
Basic Lightning: Direct or nearby strikes can cause minor problems or severe disturbances
and damage. Lightning produces spikes/surges, over-voltage or power cuts.
What causes it? The surge is generated by either a direct hit, or indirectly striking
underground or overhead lines and transmitting high surges to connected equipment in nearby
buildings.
age
t
ts
ck surge
t
ck surge
Power-cuts: Common in many countries in the world, especially in areas of frequent voltage
problems. Sudden loss of power can cause damage ranging from corruption of data to
mechanical faults as equipment is stopped while in operation.
What causes it? Power or sub station failure, breakdown in the distribution network, or simply a plug
being pulled out accidentally.
Power-Back Surges: These typically occur when power returns after a power-cut and
connected equipment receives a surge of electricity at an over-voltage level, which can be
very damaging (see above).
What causes it? Power back surges are created by the utility, when it restores supply at
an above normal voltage in order to compensate for the demand as connected equipment re-starts
simultaneously.
Telecom surges, spikes and lightning: Short term, high voltage and current phenomena
occurring on the telephone lines. Can cause irreparable damage to any piece of equipment
connected to the incoming line. The telephone line itself may even be damaged or destroyed
in severe cases.
What causes it? Telecom spikes are caused by lightning striking either the telephone line directly or an
object near it.
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TM
SOLLATEK (UK) LTD
UNIT 10 POYLE 14 INDUSTRIAL ESTATE,
NEWLANDS DRIVE, POYLE,
SLOUGH SL3 0DX,
UNITED KINGDOM
Tel: International +44 1753 688300 National 01753 688300
Fax: International +44 1753 685306 National 01753 685306
E-mail: sales@sollatek.com
www.sollatek.com
©Sollatek (UK) Limited 1996 All Rights Reserved.
SOLLATEK and the SOLLATEK device are the trade marks of the
Sollatek group of companies.
Revision 1.0
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