MI 2087 Instaltest 61557
Instrument description
5
1.3. List of parameters measurable by the Instaltest 61557
Parameter
Switch position Description
Insulation Resistance Ri
R
ISO
- Test voltage: 50
÷
1000V
in step of 10V
Continuity R of protective
conductors
R
±
200 mA
- Test
current
>
200 mAd.c.
- Single
measurement
- Auto
polarity
reverse
Continuity Rx
R
±
200 mA
- Test current < 7 mA
- Continuous
measurement
Fuse/Fault/Conductor
locator
LOCATOR
- In combination with hand-held
indicator
- Line voltage loading or
imposing of test signal
Fault Loop Resistance R
L-PE
R
LOOP
, I
SC
U
L-PE
- Max. test current 2,5A
Fault Loop Prospective
Short-circuit Current Ipsc
R
LOOP
, I
SC
U
L-PE
- Calculation:
Ipsc = U
N
⋅
1,06/R
L-PE
Voltage U
L-PE
R
LOOP
, I
SC
U
L-PE
- 0
÷
264 V
Line Resistance R
L-N
R
LINE
, I
SC
U
L-N
- Max. test current 2,5A
Line Prospective
Short-circuit Current Ipsc
R
LINE
, I
SC
U
L-N
- Calculation:
Ipsc = U
N
⋅
1,06/R
L-N
Voltage U
L-N
R
LINE
, I
SC
U
L-N
- 0
÷
264 V
Phase rotation
phase rotation
RCD - Contact Voltage Uc
Uc,R
L
- Without test rod
- No trip-out RCD
RCD - Fault Loop Resistance
R
L
(external source)
Uc, R
L
- Without test rod
- No trip-out RCD
RCD - Trip-out Time t
∆∆∆∆
N
t
∆
N
-
At
0,5I
∆
N,
I
∆
N,
2I
∆
N
and 5
I
∆
N
RCD – Trip-out Current I
∆∆∆∆
I
∆
, t
∆
- Rising current
(0,2
÷
1,1)I
∆
N
RCD - Trip-out Time t
∆∆∆∆
at
Trip-out Current I
∆∆∆∆
I
∆
, t
∆
RCD - Automatic test
RCD
AUTO
- Contact voltage meas.
- Trip-out time measurement at
0,5I
∆
N,
I
∆
N
and 5
I
∆
N
(both test
curr. start phases)
Illumination
SENSOR
Varistor Over-voltage Device
- Breakdown Voltage Ub
varistor TEST - Rising test voltage
0
÷
1000 Vd.c.
UL-N Voltage Recording
U
L-N
LOG
- 1
÷
1999 samples
- sampling rate 1
÷
99 s
