Does your AVS100 protect a house if the neutral line going to the transformer breaks?

Context: Customer is in the USA and has a 240V Live to Live centre tapped 120V L-N socket supply Customer issue: A faulty incomer neutral (floating) in combination with unbalanced loads causing a voltage imbalance across L-N outputs . Incomer supply measured L1-N at 165V and L2-N at 75V. While L1-L2 remains at a normal potential of 240V. Solution: Customer installed 2 off AVS30 (115V) in combination with 2 off contactors rated for the full load. AVS monitors a L-N supply and will disconnect the supply if the voltage goes outside its user set low and high volt disconnect settings. Please also note that in circumstances where the neutral is completely disconnected , the AVS will have lost the supply that it monitors and its on board relay will de-energise and the associated contactor will drop out (normally open type) .

Would it matter if live and neutral were swapped?

Yes. AVS/AVR input and output switches (where fitted) are connected in series with the Live wire. It is important to ensure the live can be isolated via a switch. A reversed supply would have its neutral switched which will keep the live cable energised and contravene safety regulations (earth bond touch voltage issues)

Which fuse should I use in the Sollatek AVS30 If I need to replace it. The manual states 0.5A but the unit has a 5Amp when bought new?

The fuse should be the following type: 5.0A HBC Anti Surge 20x5mm. This is a product upgrade and now standard in all new AVS units

The AVS30 has a fuse. How does this work?

If the AVS30 fuse blows (MOV gives a momentary short and therefore takes out the fuse) due to a transient. Then the AVS will not work and LED's will extinguish i.e the unit will appear dead. Replace the fuse with a new 0.5A HBC Ceramic, antisurge 20x5mm. This fuse in addition to a spike protection is also used as the control circuit supply input fuse, not to be confused with an external load fuse.

Does the AVS30 have an intelligent time delay?

Yes, the AVS30 does have an intelligent time delay.

Is the time delay on the AVS30 constant on all units?

The time delay at manufacturing is not set identically on all AVS30 units. This will allow units to start at slightly different delay. So if multiple Sollatek units are protecting multiple loads (like Air conditioners), when the power returns to normal after a power cut, not all A/Cs start at exactly the same time. This will help prevent an inrush current on return of power.

Is the AVS30 suitable for “Mobile Installation” into Caravans and Motorhomes.

The AVS30 has common neutral and a common earth for input and output. This is more related to the general wiring system classification of earthing of which we do not advise as this info is detailed in the IEE regs (section 708). The AVS is single phase L-N-E connection and therefore suitable for caravan and camping parks as long as it is connected in accordance with the national regulations.

AVS30 - Max 30amps Voltage Protection

Home / Voltage Protection / Voltshield / Single Phase AVS / Single Phase 30-100 Amps / AVS30

Description

Low power (under-voltage) will damage any refrigeration appliance’s compressor and High Power (Over voltage) will damage any electrical or electronic equipment. The AVS30 is the most complete power protection device combining over-voltage, under-voltage, power-back surges and spikes/surge protection. Additionally, there is a delay when power returns to normal. This will ensure that the appliance is not switched on-off repeatedly during fluctuations nor it is subjected to a massive surge normally experienced when power returns after power cuts. Also accommodating a start up / inrush current of 110Amps.

Furthermore, the Sollatek AVS30 Micro version has enhanced features allowing the user to set the delay time and monitoring the state of the voltage. Suitable for all domestic and industrial applications.

Downloads
Brochures
- Voltage Protection Catalogue (4MB)
Datasheets
- AVS30 Datasheet (Voltshield Switcher)- English (1MB)
- AVS30 Datasheet – Portuguese (637KB)
Instruction Manuals
- AVS30 User Manual – English (3MB)
- AVS30 LED Troubleshooting Guide (154KB)
Case Studies
- Sollatek AVS30 Proves Essential For Campers Due To Unstable Voltage At Campsites
Click on the question to get the full answer.

Does your AVS100 protect a house if the neutral line going to the transformer breaks?

Context: Customer is in the USA and has a 240V Live to Live centre tapped 120V L-N socket supply

Customer issue:
A faulty incomer neutral (floating) in combination with unbalanced loads causing a voltage imbalance across L-N outputs . Incomer supply measured L1-N at 165V and L2-N at 75V. While L1-L2 remains at a normal potential of 240V.
Solution:
Customer installed 2 off AVS30 (115V) in combination with 2 off contactors rated for the full load. AVS monitors a L-N supply and will disconnect the supply if the voltage goes outside its user set low and high volt disconnect settings. Please also note that in circumstances where the neutral is completely disconnected , the AVS will have lost the supply that it monitors and its on board relay will de-energise and the associated contactor will drop out (normally open type) .
Would it matter if live and neutral were swapped?
Yes. AVS/AVR input and output switches (where fitted) are connected in series with the Live wire. It is important to ensure the live can be isolated via a switch. A reversed supply would have its neutral switched which will keep the live cable energised and contravene safety regulations (earth bond touch voltage issues)
Which fuse should I use in the Sollatek AVS30 If I need to replace it. The manual states 0.5A but the unit has a 5Amp when bought new?
The fuse should be the following type: 5.0A HBC Anti Surge 20x5mm. This is a product upgrade and now standard in all new AVS units
The AVS30 has a fuse. How does this work?
If the AVS30 fuse blows (MOV gives a momentary short and therefore takes out the fuse) due to a transient. Then the AVS will not work and LED's will extinguish i.e the unit will appear dead. Replace the fuse with a new 0.5A HBC Ceramic, antisurge 20x5mm. This fuse in addition to a spike protection is also used as the control circuit supply input fuse, not to be confused with an external load fuse.
Does the AVS30 have an intelligent time delay?
Yes, the AVS30 does have an intelligent time delay.
Is the time delay on the AVS30 constant on all units?
The time delay at manufacturing is not set identically on all AVS30 units. This will allow units to start at slightly different delay. So if multiple Sollatek units are protecting multiple loads (like Air conditioners), when the power returns to normal after a power cut, not all A/Cs start at exactly the same time. This will help prevent an inrush current on return of power.
Is the AVS30 suitable for “Mobile Installation” into Caravans and Motorhomes.
The AVS30 has common neutral and a common earth for input and output. This is more related to the general wiring system classification of earthing of which we do not advise as this info is detailed in the IEE regs (section 708). The AVS is single phase L-N-E connection and therefore suitable for caravan and camping parks as long as it is connected in accordance with the national regulations.
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Model	Product Code
AVS30	91306000

Max Running Current	30 Amps
In Rush Current	110Amps
Power (Watts)	7200 W
Wait Time	Adjustable from 10 seconds to 10 minutes
Ideal For	Air-conditioners, large fridge/freezers, whole office, and complete circuits
Weight	500gm
Dimensions	210 x 132 x 53mm

Model	Barcode
AVS30 115V 30A 3 Minute	5060037801921
AVS30 230V 30A 50/60Hz – Portuguese	5060037801969
AVS30 230V 30A Micro Based 50/60Hz	5060037800023

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Downloads

Case Studies

Context: Customer is in the USA and has a 240V Live to Live centre tapped 120V L-N socket supply

Customer issue:

Solution:

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