Technical Specifications; Technical Features; Safety Test Functions - MARTINDALE VR2250 User Instruction Manual

14.

TECHNICAL SPECIFICATIONS

14.1.

TECHNICAL FEATURES

Accuracy is indicated as [% of reading + number of digits]. It refers to the following
atmospheric conditions: a temperature of 23°C ± 5°C with a relative humidity < 60%.

14.1.1. Safety Test functions

LOWΩ: 200mA CONTINUITY TEST (AUTO, RT+, RT- MODE)
Range [Ω]
0.01 - 9.99
10.0 - 99.9
(*) After Test leads calibration
Test Current
Resolution for Test current:
Open Circuit Voltage
MΩ: INSULATION TEST
Test Voltage [V]
50
100
250
500
1000
Open circuit Test Voltage
Short Circuit Current
Nominal Test Current 500V
other
RCD: TEST ON RCD DEVICES
Nominal Test Current (I∆N)
RCD type
Phase to Earth Test Voltage
Frequency
- Tripping Time Measurement t
Range [ms]
½ I , I 1 999
-
∆N ∆N
2 I 1 200
- general
∆N
1 250
- selective
5 I RCD 1 50
- general
∆N
1 160
- selective
- Contact Voltage Ut
Range [V]
0 2U
-
Ut LIM (UL): 25V o 50V
- Global Earth Resistance Measurement (avoiding RCD tripping)
Range [Ω]
1 1999
-
Test Current
- Tripping Current Measurement
I∆N RCD Type
AC
I∆N ≤ 10mA
A
AC
I∆N > 10mA
A
> 200mA DC per R≤5Ω (Test leads included)
1mA
4V ≤ V0 ≤ 24V
Range [MΩ]
0.01 - 9.99
10.0 - 49.9
50.0 - 99.9
0.01 - 9.99
10.0 - 99.9
100.0 - 199.9
0.01 - 9.99
10.0 - 199.9
200 - 249
250 - 499
0.01 - 9.99
10.0 - 199.9
200 - 499
500 - 999
0.01 - 9.99
10.0 - 199.9
200 - 999
1000 - 1999
<1.3 x Nominal Test Voltage
<6.0mA with 500V Test Voltage
>2.2mA with 230kΩ
>1mA with 1kΩ*Vnom
10mA, 30mA, 100mA, 300mA, 500mA
AC, A General e Selective
100V - 250V 50 Hz
50Hz ± 0.5Hz
∆N
t lim
0.5 I∆N set
Range I [mA]
∆N
(0.5 1.4) I
-
∆N
(0.5 2.4) I
-
∆N
(0.5 1.4) I
-
∆N
(0.5 2) I
-
∆N
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Resolution [Ω]
0.01
0.1
Resolution [MΩ]
0.01
0.1
0.1
0.01
0.1
0.1
0.01
0.1
1
1
0.01
0.1
1
1
0.01
0.1
1
1
Resolution [ms]
1
Resolution [V]
0.1 - 0%, +(5% Reading + 3digit)
Resolution [Ω]
1 - 0%, +(5% Reading + 3digit)
Resolution [mA]
0.1 I
∆N
VR2250
Accuracy(*)
±(2% Reading + 2 digit)
Accuracy
±(2% Reading + 2 digit) if V/R>1µA
±(5% Reading + 2 digit) if V/R≤1µA
±(2% Reading + 2 digit) if V/R>1µA
±(5% Reading + 2 digit) if V/R≤1µA
±(2% Reading + 2 digit) if V/R>1µA
±(5% Reading + 2 digit) if V/R≤1µA
±(2% Reading + 2 digit) if V/R>1µA
±(5% Reading + 2 digit) if V/R≤1µA
±(2% Reading + 2 digit) if V/R>1µA
±(5% Reading + 2 digit) if V/R≤1µA
Accuracy
±(2%Reading+2digit)
Accuracy
Accuracy I∆N
Accuracy I∆N
- 0%, +5% I
∆N