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During the meter operation, messages about errors can occur. Reasons

of errors are presented below.

9. ERROR CODES

Err1

-when the voltage or current is too small when measuring:

- PFi, tgji, cos, THD, harmonic below 10% Un,

- PFi, tgji, cos, below 1% In,

- THD, harmonic below 10% In ,

- f below 10% Un,

- I

(N)

, below 10% In;

bAd Freq

- When measuring harmonics and THD, if the frequency

value is beyond the interval 48 – 52 Hz for 50Hz and

58 – 62 for 60 Hz;

Err bat

is displayed when the battery of the internal RTC

clock is used up. The measurement is carried out after

switching the supply on and every day at midnight.

One can disable the message by the

push-

button. The disabled message remains inactive till the

renewed switching of the meter on.

Err CAL, Err EE

- are displayed when the meter memory is damaged.

The meter must be sent to the manufacturer.

Err PAr

- are displayed when operating parameters in the

meter are incorrect. One must restore manufacturer’s

parameters (from the menu level or through RS-485).

One can disable the message by the

push-

button.

Err Enrg

- are displayed when energy values in the meter are

incorrect.

One can disable the message by the

push-

button. Incorrect energy values are reset.

Lumel ND20 User Manual

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