CATU MS-917-L Low Voltage Detector Instruction Manual
- June 13, 2024
- CATU
Table of Contents
SICAME GROUP
DETEX MS-917 / MS-918
MS-917-L , MS-917-Pg , MS-918-SP2 , MS-917-BS
MS-918-L, MS-918-Pg, MS-917/2-ERDf
MS-917-L Low Voltage Detector
OPTIONAL EQUIPMENT
Tool bag: M-87285
Panel hanger: M-952325
DETEX MS-917 / MS-918
- Red safety test probe
- Black safety test probe
- Multifunction diode: 12V, + Pole
- Multifunction diode: 12V, – Pole
- Presence of dangerous voltage diode (>50V)
- Measurement button
- Lever for freeing terminals
- Diodes (see field of use)
- Phase LED
- Retractable sheath
- Phase rotation LED
- Lighting unit
DDT / VAT VOLTAgE DETECTOR
Please read these instructions carefully and comply with the precautions for
use.
This voltage detector is designed for use by qualified staff in compliance
with the national safety rules.
The voltages indicated on this detector are nominal voltages. Ensure that the
detector will be used on facilities that have suitable nominal voltages and
the appropriate climatic category.
DESCRIPTION
Your MS-917/MS-918 is a voltage detector (DDT). It is used for carrying out no
voltage check (VAT) operations. It was designed according to EN 612433 / IEC
61243-3 standards in response to the requirements of the collection of general
electrical safety instructions NF C 18 510 and to the European standard EN
50110-1.
Moreover, it is completed by the following functions:
– check of voltage levels
– continuity check of an electrical circuit (power off)
– Phase rotation monitoring (« 2 wire » method)
– identification of the phase (by the uni polar method)
– check of +/- polarities
– phase sequence control (depending on model)
It is equipped with IP2X safety test probes and an integrated correct
operation test.
SAFETY INSTRUCTIONS
According to the internal impedance of the voltage detector, there is
different capacity to show the presence or absence of operating voltage if
there is a induced voltage present. A voltage detector with a relatively low
internal impedance, compared to the reference value of 100 kΩ, does not show
all the induced voltages whose original voltage is greater at the ELV level.
When the voltage detector is in contact with the parts to test, it can
temporarily evacuate the induced voltage at a lower level than the ELV, then
return to the original value when the voltage detector is removed. If the
‘voltage present’ message is not displayed, it is strongly recommended to
install earthing equipment before the operation.A voltage detector with a
relatively high internal impedance, compared with the reference value of 100
kΩ, cannot clearly specify the lack of operating voltage if a disruptive
voltage is present. If the ‘voltage present’ message is displayed on a part
meant to be disconnected from the installation, it is strongly recommended to
use other methods to confirm (use of a suitable voltage detector, a visual
check of the electric circuit disconnection point, for example) that there is
no operating voltage on the part to test, and to conclude that the voltage
shown by the voltage detector is a disruptive voltage.
CHECKING CORRECT OPERATION (auto test)
A “no voltage test“ must always be preceded and followed by a correct
operation test.
Never use the device if this operation is inconclusive. Short-circuit the
safety test probes and press 6.
Correct functioning of the voltage detector is indicated when:
⇒ the illumination at high speed (1s) voltage led indicator (diode 5 remain
off).
⇒ the triggering of a sound signal at high repetition rate.
Make sure, especially in high noise level areas, the buzzer signal is
audible.
Note 1 : A correct operation check indicates whether the battery level is
good: if the correct operation check fails, replace the battery.
If still faulty, contact our maintenance department.
Note 2 : The “correct operation check” function ensures the integrity of
the cord, battery, and electronic circuit.
CHECKING Of THE ABSENCE Of VOLTAGE
Connect the safety test probes 1 and 2 in contact with the source to be
checked.
No signal must be emitted.
A.C. OR D.C. VOLTAgE TEST
The voltage detector indicates the voltage levels.
Place the safety test probes 1 and 2 in contact with the source to be checked.
The voltage level is indicated by the illumination of diodes, and doubled up
by the emission of an intermittent acoustic signal up to 230V and continuous
beyond.
The presence of dangerous voltage diode 5 comes on when the safety voltage
(50V) is exceeded.
Note 1 : The various indications (VLV excess diode, in particular) are
intended to give voltage levels. They must not be used to make measurements.
Note 2 : The voltages indicated on the detector correspond to nominal
voltages. The detector must therefore be used on facilities with specified
voltages.
Do not leave switched on for more than 30 seconds!
POLARITY TEST
The presence of alternating (A.C.) voltage is confirmed when the + 12V (3) and
– 12V (4) diodes come on simultaneously.
The presence of direct (D.C.) voltage is confirmed when one of the two diodes
comes on:
– The – 12V (3) diode, if the red safety test probe is connected to the
negative pole of the source;
– The + 12V (4) diode, if the red safety test probe is connected to the
positive pole of the source.
PHASE IDENTIfICATION
Phases can be very easily spotted with your MS-917/MS-918. The operation is
carried out with the red tip probe, holding it in your hand. The cords should
be left free and not held in hands. When the tip of the probe comes into
contact with a phase the “Phase”
LED lights up.
**CONTINUITY TEST***
This operation is to be carried out when circuit is disconnected. Place the
two test probes at the terminals of the item to be checked, then press the
black button.
A continuity resistance lower than R is indicated when:
⇒ The illumination at high speed (1s) of diodes at voltages. The multifunction
diode and the diode for presence of dangerous voltage remain off);
⇒ the triggering of a sound signal at high repetition rate.
Note: The function remains enabled for about 10 seconds after releasing
the button that is pressed to free up one hand. (5 minutes for MS-918-SP2)
Lighting unit**
The “lamp light” is activated by a long press (approx. 2s) on the test button
6 without making contact with the two probes. Extinction is automatic after a
delay of about 30 s or by re-pressing the test button6 .
CHANGING THE BATTERY
This operation is to be carried out when the instrument is disconnected from
all sources of voltage.
The battery must be replaced when the correct operation check fails.
Remove the three screws located on the lower casing (POZIDRIV blade, PZ1
exclusively).
Remove the lower casing. Insert two AAA (LR03; 1,5V) batteries and ensure that
the polarity is correct.
Replace the lower casing and retighten the 3 screws.
Be careful to screw with a suitable tightening torque (about 0.75 Nm).
MAINTENANCE / STORAGE Of YOUR
MS-918
It generally requires no specific maintenance; however, keep it fully clean by
using a cloth moistened with alcohol or a soft detergent. Your DDT/VAT must be
stored in a clean and dry place.
Unauthorised staff must not disassemble the detector.
PERIODICAL MAINTENANCE
The owner is responsible for establishing the maintenance plan. However, no
voltage detector should be used without being checked within a maximum period
of 6 years.
TECHNICAL FEATURES
| Nominal voltages (V)| R (Ω)
---|---|---
MS-917| 12-24-50-127-230-400-690 (750DC)| 200
MS-917-L| 12-24-50-127-230-400-690 (750DC)| 200
MS-917/2-ERDF| 12-24-50-127-230-400-690 (750DC)| 100
MS-917-BS| 50-230-440 (VAC)| –
MS-918| 12-24-50-127-230-400-600-900| 80
MS-918-L| 12-24-50-127-230-400-600-900| 80
MS-918-SP2| 12-24-50-127-230-400-600-900| 80
MS-917-PG| 12-24-50-127-230-400-600-900| 80
MS-918-PG| 12-24-50-127-230-400-600-900 (1000DC)| 80
Field of use:
-
Relative humidity: 20% à 95%
-
Sound and light device.
-
Frequency: DC, 50/60/400 Hz +/- 3% (frequency max 60Hz for MS-917 and MS-917-L)
-
Operating temperature: -15°C /+45°C
-
Internal ELV impedance: see marking on your voltage detector
-
Response Time: < 1s
-
Protection level : IP65 / IK 06
-
Double insulation Class II
-
IEC 61243-3 (2014) EN 61243-3 (2015)
-
IEC 61326-1 (EMC)
-
CAT IV-600V – CAT III-1000V
-
Store in dry, clean conditions.
For outside use. -
Powered by two AAA batteries (LR03 – 1.5 V).
-
Operating cycle:
– On 30 s (maximum time during which the device can be conneted to an energized part)
– Off 240 s (minimum idle period during which the detector must not be connected to an energized part). -
Weight 210 g.
MS-918 – MS-918-SP2 – MS-917/2-ERDF – MS-918-PG – MS-918-L
PHASE ROTATION MONITORINg
Your MS-918 enables you to determine the rotation direction of phases. This
operationis carried out in two sequences utilising the two tips of the probe.
In advance you should ensure the existence of voltage and that it is of the
same strength on each of the three
phases (minimum 127 Volts). Throughout the entire operation the tip of the red
probe must remain in contact on phase 1.
Sequence 1:
– place the tip of the black probe in contact with phase 2.
– the appliance is then ready for the following sequence when the rotation
LEDs of the red and green phase flash on and off simultaneously.
Sequence 2 : Next move the tip of the black probe towards phase 3.
– if the green LED lights up the rotation direction is0 clockwise.
– if the red LED lights up the rotation direction is anti-clockwise.
– if the phase rotation LEDs are not illuminated your MS-918 is telling you
that you are not in the presence of a balanced tri-phase network. Repeat the 2
sequences in order to confirm the result.
N.B : You will have 5 seconds to carry out this 2nd sequence.
N.B : In a case of an anti-clockwise rotation direction we recommend that
you repeat a monitoring check-up of the phases switching hases 2 and 3 around
in order to obtain a clockwise rotation direction.
Except version MS-917-L and MS-918-L
Except series MS-917
Except version MS-917-BS
Thorne & Derrick
-1-44 (0) 191 410 4292
www.powerandcables.com
CATU S.A. 10 A 20 AVENUE JEAN-JAURÈS
92222 BAGNEUX CEDEX FRANCE
TÉLÉPHONE: 0142314646
CATUELEC.COM
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