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Forum Index : Electronics : Hysteresis/Time?

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domwild
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Joined: 16/12/2005
Location: Australia
Posts: 873

Posted: 10:50pm 10 Nov 2019

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Hi,

For some reason the subject line with its 70 char. limit did not allow me to add "Hysteresis and Time Delay Differences"?

GEYA makes two different "Monitoring Voltage Relays" GRV8-01 and GRV8-02. The 01 relay has a hysteresis AND time delay setting, while the 02 one has only a time delay setting. As I am sufficiently ignorant, I believe both are the same?

All I know is that inverters will switch off the grid at 230VAC +10% and -6% or about 256V at the high end and it is well before that switch off that I will want my hot water element to be switched in, so I save a bit of money.

The inverter switching off/in may happen in rapid succession and these settings will stop the relay rapidly firing, but why have two settings?

An aside: How tolerant is my electrician going to be when it comes to installing that Chinese relay which I purchased and which may not meet AUS/NZ standards?

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