MI 2087 Instaltest 61557
Measurement instructions
28
Fig. 22.
Connection of Universal Test Cable
Step 7
(
Uc
function is selected)
•
Press the
START
key and release it. Measurement will be carried out and result
(Uc at I
∆
N
- standard RCD or Uc at 2I
∆
N
- selective RCD) will be displayed.
•
Check Fault Loop Resistance subresult and preset Limit Contact voltage by
using the
DISPLAY
key.
•
Store displayed result for documentation purpose; see instructions how to store
it in chapter 4.1. Storing of test results.
Step 8
(
looP
function is selected)
•
Press the
START
key and release it, the measurement will start to run. Three
dots (
. . .
) will flash until the measurement is finished, then result is displayed.
The measurement may last longer (up to 1 min approx.) in order to assure
accurate and stabile test result.
•
Check Contact Voltage subresult (Uc at I
∆
N
– standard RCD or Uc at 2I
∆
N
–
selective RCD) and preset Limit Contact voltage by using the
DISPLAY
key.
•
Store displayed result for documentation purpose; see instructions how to store
it in chapter 4.1. Storing of test results.
Notes!
•
If RCD trips during the measurement (some fault or leakage current is probably
already flowing to ground),
rcd
mark will start to blink.
•
RCD type, Limit Contact Voltage and Nominal differential current set in this
function, will be offered in other RCD functions (wherever actual)!
•
Current, flowing to PE protective conductor, caused by faulty appliances or
capacitive connection between L and PE terminals will influence the test result.
Disconnect such appliances before the measurement is started!
•
Specified accuracy of Uc/R
L
measurement is valid only if earthing system
connected to PE terminal is free of interfering voltages!
•
bat
message, displayed during or after finishing the measurement means
batteries are too weak to guarantee correct result. Replace the batteries.
