Datasheet
GMC-I Messtechnik GmbH 5
SECUTEST BASE / PRO and SECULIFE ST BASE(25)
Test Instruments for 
Measuring
 Electrical Safety of Devices
Characteristic Values 
Func-
tion
Measured 
Quantity
Display Range /
Nominal Range of 
Use
Reso-
lution
Nominal
Voltage
U
N
Open-
Circuit 
Voltage
U
0
Nom. 
Current
I
N
Short-
Circuit
Current
I
K
Inter-
nal 
Resis-
tance
R
I
Refer-
ence 
Resis-
tance
R
REF
Measuring 
Uncertainty 
1
Intrinsic Error 
1
Overload 
Capacity
Value Time
Tests, 62638 (DIN VDE 0701-0702) / IEC 62353 (VDE 0751)
Protective 
conductor 
resistance 
R
PE
1 … 999 mΩ 1mΩ
—
< 24 V 
AC or DC
—
>200 mA
AC or DC
> 10 A AC  
5
>35 AAC
11)
——
±(15% rdg. + 10 D)
>10D
> 10.0 Ω :
±(10% rdg.+ 10 d)
±(10% rdg.+ 10 d)
>10d
264 V
250 mA
16 A 
5
Cont.
1.00 ... 999 Ω 10 mΩ
>42 AAC
11)
15 s
10.0 … 30.0 Ω
100 m
Ω
Insulation 
resistance 
9
RISo
10 … 999 kΩ 1kΩ
50 … 500 
VDC
1.0 • U
N
 …
1.5 • U
N
>1 mA >2mA — —
±(5% rdg.+ 4 d) 
> 10 d
±
(2.5% rdg.+2 d)
> 10 d
264 V Cont.
1.00 … 9.99 MΩ 10 kΩ
10.0 … 99.9 MΩ 100 kΩ
≥ 20 MΩ:
±(10% rdg.+ 8 d)
≥ 20 MΩ:
±
(5% rdg.+4 d)
100 … 300 MΩ 1MΩ
Leakage current,
alternative 
measurement 
2
IPE, IB, IG, IA
0.0 ... 99 μA1μA
—
50 ... 
250 V~
– 20/+10%
—>1.5mA
> 150 k
Ω
1kΩ
±10 Ω
±
(5% rdg.+ 4 d) > 10 d
> 15 mA: 
±(10% rdg.+ 8 d)
±
(2% rdg.+2 d) > 10 d
> 15 mA: 
±(5% rdg.+ 4 d)
264 V Cont.
100 ... 999 μA1μA
1.00 ... 9.99 mA 10 μA
10.0 ... 30.0 mA 100 μA
Leakage current,
direct 
measurement 
3
IPE, IB, IG, IA, IP
Only Ip: 0.0 ... 
99.9 μA
100 nA
————
1kΩ 
±10 Ω
1kΩ
±(5% rdg.+ 4 d) 
> 10 d
±
(2.5% rdg.+2 d)
> 10 d
264 V Cont.
0.0 ... 99 μA1μA
100 ... 999 μA1μA
1.00 ... 9.99 mA 10 μA
10.0 ... 30.0 mA 100 μA
Leakage current,
differential 
current 
measurement 
4
IPE, IB, IG
0 ... 99 μA1μA
— — ————
±(5% rdg.+ 4 d)
> 10 d
±
(2.5% rdg.+2 d) 
> 10 d
264 V Cont.
100 ... 999 μA1μA
1.00 ... 9.99 mA 10 μA
10.0 ... 30.0 mA 100 μA
Function test at test socket
Line voltage 
U
L–N 
10
100.0 … 240.0 V~ 0.1V— — ———— —
±
(2% rdg.+2 d)
264 V Cont.
Load current I
L
0 … 16.00 A
RMS
10mA— — ———— —
±
(2% rdg.+2 d)
16 A Cont.
Active power P
0 … 3700 W 1 W — — — — — — —
±
(5% rdg.+10 d)
>20d
264 V Cont.
20 A 10 min
Apparent power S
0 … 4000 VA 1 VA Calculated value, U
L–N
 • I
V
±
(5% rdg.+10 d)
>20d
Power factor PF
with sinusoidal 
waveform: cosϕ
0.00 … 1.00 0.01 Calculated value, P / S, display > 10 W ±(10% rdg.+5 d)
t
A
PRCD
Time to trip
0.1 ... 999 ms 0.1 ms — — 30 mA — — —
±
5 ms
V–COM
Probe voltage 
(test probe P1 to PE)
, and 
0,0 … 99.9 V
100 ... 250 V
100 mV
1 V
————
3 MΩ
——
±
(2 % v.M.+2 D)
300 V
, 
and 
Cont.
Measurem. voltage
(
sockets 
V–COM
6
)
, and 
1 MΩ
±
(2 % 
rdg. 
+2
d
) 
> 45 Hz ... 65 Hz
±
(2 % 
rdg.
+5
d
) 
> 65 Hz ... 10 kHz
±
(5 % 
rdg. 
+5
d
) 
> 10 kHz ... 20 kHz
Leakage current 
via AT3-IIIE 
adapter Z745S 
6 8
0,00 ... 0.99 mA
0.01 mA
— — ———— —
±(2 % rdg.+2 d)
>10D
without adapter
253 V Cont.
1,0 ... 9.9 mA
0.1 mA
10 ... 20 mA
1mA
Temperature
with Pt100 sensor
– 200.0 ... 
+850.0 °C
0.1 °C— <20V– 1.1mA— — — ±(2 % rdg.+1 °C) 10 V Cont.
Temperature with 
Pt1000 sensor
– 150.0 ... 
+850.0 °C










