MRU-200-GPS OPERATING MANUAL Version 1.06
4
6
POWER SUPPLY .................................................................................................. 47
6.1
M
ONITORING OF THE POWER SUPPLY VOLTAGE
..................................................... 47
6.2
R
EPLACEMENT OF BATTERIES
................................................................................ 47
6.3
F
USE REPLACEMENT
.............................................................................................. 48
6.4
C
HARGING OF BATTERIES
...................................................................................... 48
6.5
D
ISCHARGING OF BATTERIES
................................................................................. 49
6.6
G
ENERAL PRINCIPLES REGARDING USING
N
I
-MH
BATTERIES
................................. 50
7
CLEANING AND MAINTENANCE ................................................................... 51
8
STORAGE .............................................................................................................. 51
9
DISMANTLING AND DISPOSAL ...................................................................... 51
10
TECHNICAL DATA ............................................................................................. 51
10.1
B
ASIC DATA
........................................................................................................ 51
10.2
A
DDITIONAL DATA
.............................................................................................. 55
10.2.1
Influence of the serial interference voltage U
Z
upon earth resistance
measurements for functions 3P, 4P, 3P + clamp ........................................ 55
10.2.2
Influence of the serial interference voltage V
Z
upon earth resistance
measurements for function ρ ....................................................................... 55
10.2.3
Influence of the auxiliary electrodes upon earth resistance measurements
for function 3P, 4P, 3P + clamp ................................................................. 55
10.2.4
Influence of the auxiliary electrodes upon earth resistance measurements
for function ρ ............................................................................................... 56
10.2.5
Influence of the auxiliary electrodes upon earth resistance measurements
by means of the percussive method ............................................................. 56
10.2.6
Influence of the interference current I
Z
upon the result of the earth
resistance measurement 3P+clamp ............................................................ 56
10.2.7
Influence of interference current upon the result of the earth resistance
measurement using double clamps ............................................................. 57
10.2.8
Influence of the relation of the resistance measured with clamp for the
multiple earthing branch to the resultant resistance (3P + clamp) ............ 57
10.2.9
Additional uncertainties in accordance with IEC 61557-4 (2P) ................ 57
10.2.10
Additional uncertainties in accordance with IEC 61557-5 (3P, 4P,
3P + clamp) ................................................................................................ 57
11
ACCESSORIES ..................................................................................................... 58
11.1
B
ASIC ACCESSORIES
........................................................................................... 58
11.2
A
DDITIONAL ACCESSORIES
................................................................................. 58
12
POSITIONS OF THE METER’S COVER ......................................................... 60
13
MANUFACTURER ............................................................................................... 60
