Seaward ARE 1557 - Manual (Page 13)

ERT1557
Operating Instructions
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5 Using the ERT 1557
5.1 Power On
To turn the ERT 1557 on simply rotate the rotary
switch to the required test type.
5.2 Battery Health Check
The ERT 1557 will automatically perform battery health
checks prior to a test performing.
Note: When the battery symbol is flashing all tests
will be inhibited and the batteries should be
replaced as described in section 8.4.
Do not connect any voltage or power source to
the current clamp inputs. Damage to the ERT
1557 will occur.
5.3 RA 3 Pole
Always ensure that the circuit under test is
<30Vrms.
5.3.1 Rotate the rotary switch until the R
A
3pole test is
selected.
ERT 1557
E ES S H
Potential
Electrode
Current
Electrode
Earth
Electrode
Figure 3