Chauvin Arnoux C.A 6501 User manual

C.A 6501
 MEGOHMMETRE
 MEGOHMMETER
 MEGOHMMETER
 MEGAOHMMETRI
 MEGAOHMETRO
Notice de fonctionnement
User’s manual
Bedienungsanleitung
Manuale d’uso
Manual de instrucciones
FRANÇAIS
E N G L I S H
D E U T C H
ITALIANO
ESPAÑOL
El modelo Chauvin Arnoux
C.A 6501 es el equivalente al
modelo AEMC 6501

English
You have just purchased a CA 6501 megohmmeter; thank you for your
confidence.
For best results from your device:
• read this user manual attentively,
• observe the precautions for its use.
MEANINGS OF THE SYMBOLS USED
AC – Alternating current
Instrument fully protected by double insulation. No
connection to the protective earth is necessary.
Selective sorting of wastes for the recycling of
electrical and electronic equipment within the
European Union.
In conformity with directive WEEE 2002/96/EC: this
equipment must not be treated as household waste.
Danger. See explanations in this manual
Risk of electric shock
Definitions of the measurement categories:
• Measurement category IV corresponds to measurements made at the
source of the low-voltage installation.
• Measurement category III corresponds to measurements made in the
installation of the building.
• Measurement category II corresponds to measurements made on
circuits directly connected to the low-voltage installation.
• Measurement category I corresponds to measurements made on circuits
not directly connected to the network.
Office: Jl. Radin Inten II No. 62 Duren Sawit, Jakarta 13440 - Indonesia
Workshop: Jl. Pahlawan Revolusi No. 22B, Jakarta 13430 - Indonesia
Phone: [phone] (Hunting) Fax: [phone]
Mobile: [phone]

English
16 C.A 6501
CONTENTS
1 PRESENTATION.............................................................................17
2 DESCRIPTION OF THE VARIOUS PARTS, CONTROLS, AND FUNCTIONS
17
3 USE - CHARACTERISTICS:...........................................................18
3.1 RECOMMENDATIONS.............................................................18
3.2 OPERATION:............................................................................19
3.2.1 MΩmeasurement at 500VDC:..........................................19
3.2.2 kΩmeasurement at 1mADC: ............................................19
3.2.3 Ωmeasurement at 5mADC:..............................................20
3.2.4 AC voltage measurement..................................................20
4 GENERAL CHARACTERISTICS: ...................................................21
5 WARRANTY....................................................................................23
6 MAINTENANCE ..............................................................................23
6.1 REPLACING THE FUSE: .........................................................23
6.2 STORAGE:...............................................................................24
6.3 CLEANING: ..............................................................................24
6.4 METROLOGICAL CHECK........................................................24
6.5 REPAIR: ...................................................................................24
7 TO ORDER......................................................................................25

English
C.A 6501 17
1 PRESENTATION
The CA 6501 is an electrical measuring instrument intended for the measurement
of low resistance values (0 to 100Ωat 5mA
DC
), of resistances (0 to 500kΩat
1mA
DC
), and for insulation measurements (0.5 to 200MΩat 500V
DC
). The
ohmmeter function is protected against the accidental presence of a voltage by a
high-breaking-capacity fuse. A voltage-present indicator serves to make sure that
there is no AC voltage in the circuit to be tested.
This instrument is ready for use at all times because it requires no operating
maintenance. A magneto generator provides the various measurement and
operating voltages.
2 DESCRIPTION OF THE VARIOUS PARTS,
CONTROLS, AND FUNCTIONS
Physical guard used
to support the left hand
when operating the
crank.
Orange indicator lit: indicates
that magneto speed of rotation
is OK, i.e. that there is a voltage
of up to 500V
DC
(MΩrange) or
a current of 1mA
DC
(kΩrange)
or a current of 5mA
DC
(Ωrange).
Red indicator
lit: multiply the reading
by 10 to obtain the result
(on MΩ, kΩ, Ωscales)
Range switch;
set back to
MΩ/V∼after using
Retractable crank
Screw for adjustment
of the mechanical zero
of the galvanometer
Measurement terminals
Fuse
Black Red

English
18 C.A 6501
A red indicator (Fig. 2) on the left side of
the instrument indicates the automatic
change of range. When it is lit, multiply the
reading by 10 to obtain the result.
Measurement input terminals:
These accept safety plugs 4mm in
diameter.
Other indicators:
An orange indicator (Fig. 1) on the right
side of the instrument indicates that the
speed of the magneto is correct. When it is
lit, the voltage between the termina
ls of the
instrument is 500V, 650V, or 10VDC (no-
load), depending on the setting of the
switch.
3 USE - CHARACTERISTICS:
3.1 RECOMMENDATIONS
The needle must indicate 0 when at rest in the voltmeter setting; if not, adjust
it using the black screw in the centre (see picture above).
Do not connect the instrument to the terminals of a circuit of which the
voltage exceeds 600VAC or DC.
Before any resistance measurement, check that the circuit is not live (switch
set to voltmeter before connection).
After each insulation resistance measurement, let the circuit discharge
(needle on 0V; this takes a few seconds) before disconnecting the
instrument.

English
C.A 6501 19
3.2 OPERATION:
3.2.1 MΩ
ΩΩ
Ωmeasurement at 500VDC:
3.2.2 kΩ
ΩΩ
Ωmeasurement at 1mADC:
The measurement is made
with a current of 1mADC,
from 0 to 500kΩmeasured
(650V
DC
max. no-load).
There is a change of reading
coefficient for rising values:
50kΩ(changes to X10
reading), and a change of
reading coefficient for falling
values: 45kΩ(changes to X1
reading).
The measurement is made at
a voltage of 500V
DC
above
0.5MΩmeasured.
There is a change of reading
coefficient for rising values:
20MΩ(changes to X10
reading), and a change of
reading coefficient for falling
values: 5.5MΩ(changes to
X1 reading).

English
20 C.A 6501
3.2.3 Ω
ΩΩ
Ωmeasurement at 5mADC:
3.2.4 AC voltage measurement
The measurement is made
with a current of 5mA
DC,
from
0 to 100Ωmeasured (10V
DC
max. no-load).
There is a change of reading
coefficient for rising values:
10Ω(changes to X10
reading), and a change of
reading coefficient for falling
values: 9Ω(changes to X1
reading).
The AC voltage measurement
is from 0 to 600V
AC
in a single
range (input impedance:
100kΩ), switch set to V.

English
C.A 6501 21
4 GENERAL CHARACTERISTICS:
Dimensions: 120mm x 120mm, height 130mm.
Mass: 1.06kg.
Degree of protection by housing:
IP54 with cover and IP52 without cover as per IEC
60529 (Ed. 92)
Power supply: This instrument is supplied by a magneto generator that
provides the various measurement and operating
voltages (speed of rotation: approximately 140 rpm).
The voltmeter is supplied by the measurement input and
so there is no need to operate the crank.
Characteristics in the reference domain (23°C ±
±±
±3°C):
Ranges Characteristics in the reference range
MΩ±2.5% of full scale
kΩ±2.5% of full scale
Ω±2.5% of full scale
Volt~ ±3% of full scale from 45 to 450Hz
MΩMeasurement voltage: 500V
MΩShort-circuit current ≤5mA
kΩCurrent regulated to 1mA
ΩCurrent regulated to 5mA

English
22 C.A 6501
Variations in the domain of use: quantities of influence.
Ranges Errors in the range of use (-10 to+45°C) up to 50% RH and to
+35°C up to 75% RH)
MΩ+1.25% / 10°C
kΩ+1.25% / 10°C
Ω+1.25% / 10°C
Volt ~ +1.5% / 10°C, from 45Hz to 450Hz
MΩ±5%
Overloads - protection:
Ω
ΩΩ
Ωrange: 600VAC/DC max.: protection by fast-blow fuse F 0.2A,
600V, HBC (6.3x32mm) from 100V, below 100V overload
limited to 10 seconds.
kΩ
ΩΩ
Ωrange: 600VAC/DC max.

English
C.A 6501 23
Compliance with international standards:
Electrical safety in accordance with IEC 61010-1 (Ed. 2 of 2001).
Electrical safety in accordance with IEC 61010-2-031 (Ed. 2 of 2002).
Measurement in accordance with IEC 61557 (Ed. 2 of 2007), parts 1 and 4
Rated maximum voltage: 600V
Rated characteristics: measurement category III, 300V, or
measurement category II, 600V with respect
to earth,
degree of pollution 2.
Electromagnetic compatibility:
The instrument complies with EMC requirements as per NF EN 61326-1
(Ed. 97) + A1 (Ed. 98) + A2 (Ed. 2001).
5 WARRANTY
Our warranty applies, except as otherwise expressly stipulated, for twelve
months counting from the date of availability of the equipment (extract from
our General Terms of Sale, communicated on request).
6 MAINTENANCE
6.1 REPLACING THE FUSE:
For your safety, snap the crank into the recess provided for this purpose; be
sure to disconnect the leads from any electrical installation and from the
instrument.
Using a flat blade screwdriver, press and turn a quarter turn anti-clockwise to
release the fuse. Replace only with a fuse having identical characteristics.
Fuse: F 0.2A/600V/HBC P/N: P01297095