GOSSEN METRAWATT METRISO 1000A User Manual

METRISO®1000A
Insulation Tester

• Nominal voltages:
50 V, 100 V, 250 V, 500 V und 1000 V

• Quick testing with signal lamp

• Low impedance measurement 0 ... 4 Ω

• Voltage measurement up to 1000 V

3-348-807-03

7/6.06

Nominal voltages 50 V, 100 V, 250 V, 500 V and 1000 V

This instrument is suited for measurement of insulation resistance
at voltage-free devices and systems with nominal voltages of up
to 1000 V, and for the insulation testing of earth conductors, pro­tective conductors and bonding conductors, including junctions
and connections.

Quick testing with signal lamp

The signal lamp in the test prod serves to illuminate the work area,
and also indicates an evaluation of the insulation resistance as OK
or Failure. As long as this lamp is lit, the minimum values for insu­lation resistance per VDE 0100 have been met.

Low impedance measurement 0 ... 4 Ω

Low impedance measurement in accordance with VDE 0413,
Part 4 is also possible.

Voltage measurement to 1000 V

The instrument is also equipped with a 1000 V measuring range
for direct and alternating current. This is especially advantageous
for the testing of devices for the absence of voltage, and the dis­charge of capacitive devices under test.

Minimal use of batteries

Measurement only occurs when the ON/OFF button is
depressed. This provides for long service life of the batteries.

Dial gauge with signal lamp

The condition of the batteries is indicated by the color of the sig­nal lamp at the left side of the dial gauge. This lamp also serves to
indicate that the instrument is switched on.

Applicable regulations and standards

IEC 61010-1
EN 61010-1
VDE 0411-1

EN 61557
VDE 0413

Part 1
Part 2
Part 4

DIN EN 61326
VDE 0843 Part 20

EN 60529
DIN VDE 0470 Part 1

DINEN60051 Direct-acting and direct-display electrical measuring

Safety regulations for electrical measuring, control and
laboratory equipment
– General requirements

Measuring and monitoring instruments for the testing of
electrical safety in systems with nominal voltages
of up to 1000 V AC and 1500 V DC
General requirements
Insulation resistance measuring instruments
Resistance measuring instruments

Electrical equipment for measurement, control and
laboratory use – EMC requirements

Test instruments and test procedures
– Degree of protection provided by enclosures (IP code)

instruments and their accessories

GMC-I Gossen-Metrawatt GmbH

METRISO®1000A
Insulation Tester

Technical Data

rdg.

rdg.

rdg.

rdg.

rdg.

rdg.

Nominal

Voltage

2)

50 V

100 V 120 V

250 V 300 V

500 V 600 V

1000 V 1200 V

Measuring

Function

1000 V 0 ... 1000 V ± 2.5 % — — — —

R1, R2, R3

U

= 50 V

N

R1, R2, R3

U

= 100 V

N

R1, R2, R3

U

= 250 V

N

R1, R2, R3

= 500 V

U

N

R1, R2, R3

U

= 1000 V

N

4 Ω 0 ... 4 Ω± 1.5 %

1)

)

As related to scale length

Scale lengths: R1 l = 46 mm

2)

Within the marked area of the respective scale (nominal range of use)

Measuring Range

0 ... 40 kΩ

200 kΩ ... 20 MΩ 40 kΩ

0 ... 80 kΩ

400 kΩ ... 40 MΩ 80 kΩ

0 ... 200 kΩ

1 MΩ ... 100 MΩ 200 kΩ

0 ... 400 kΩ

2 MΩ ... 200 MΩ 400 kΩ

0 ... 0.8 MΩ

4 MΩ ... 400 MΩ 800 kΩ

R2 l = 71 mm
R3 l = 80 mm
Ω l = 67 mm
U l = 66 mm

Inherent Devia-

tion at Reference

Conditions

1)

± 1.5 %

± 1.5 %

± 1.5 %

± 1.5 %

± 1.5 %

Measuring

Error

±25%

±25%

±25%

±25%

±25%

±10%

Nominal/

Measuring

U

—I

Current

N

≥ 1.0 mA

I

N

≥ 200 mA 9 V > 200 mA — — 0,315 A

m

Turn-on performance
for insulation resistance measurement

An electronic voltage limiter prevents the voltage at the device
under test from substantially exceeding nominal voltage at turn­on (see following characteristic curves).

Open­circuit

Voltage

U

o

60 V

Fre-

quency/

Short­circuit

Current I

DC /

40 ... 200 Hz900 kΩ — 1200 V

<12mA

Resistance

k

Internal

R

i

30 kΩ

60 kΩ

150 kΩ

300 kΩ

600 kΩ

Switching Value

for Resistance

> 100 kΩ 1200 V max. 10 s20 kΩ ... 1 MΩ 10 kΩ

> 200 kΩ 1200 V max. 10 s40 kΩ ... 2 MΩ 20 kΩ

> 500 kΩ 1200 V max. 10 s100 kΩ ... 5 MΩ 50 kΩ

> 1 MΩ 1200 V max. 10 s200 kΩ ...10 MΩ 100 kΩ

> 2 MΩ 1200 V max. 10 s400 kΩ ... 20 MΩ 200 kΩ

Overload Capacity

Value Duration

continu-

ous

continu-

ous

Accuracy

Insulation resistance Class 1.5 in reference to scale length

after electrical zero balance

Direct and
alternating current class 2.5

Display

Movement Moving coil with core magnet

Ux
[V]

500

400

300

200

100

Ux
[V]

600

500

400

300

200

100

Range R1

UN= 500 V

0

500

1000

Rx

[kΩ]

Ux
[V]

600

500

Rx
[MΩ]

400

300

200

100

0

Range R2

UN= 500 V

0

0,5

2

1,5

1

Range R3

UN=500V

Rx
[MΩ]

2 GMC-I Gossen-Metrawatt GmbH