AEMC instruments MD304 User manual

AC Current Probe
Model MD304
User Manual
DESCRIPTION
The Model MD304 (Catalog #1201.37) is designed for use in industrial environments. The
hook-shaped jaws enable the user to “pry” into or “hook” onto cables (will accept 2 x 500 MCM)
or even smaller bus bars. The current output up to 500 Arms continuous makes it the perfect
tool for measurement with DMMs, recorders or instruments with current ranges. The Model
MD304 󰀨
WARNING
These safety warnings are provided to ensure the safety of personnel and proper operation of the instrument.
• Read the instruction manual completely and follow all the safety information before attempting to use or
service this instrument.
• Use caution on any circuit; high voltages and currents may be present and may pose a shock hazard.
• 
voltage ratings given.
• Safety is the respondibility of the operator.
• ALWAYS connect the current probe to the display device before clamping the probe onto the sample
being tested.
• ALWAYS inspect the instrument, probe, probe cable, and output terminals prior to use. Replace any
defective parts immediately.
• 

INTERNATIONAL ELECTRICAL SYMBOLS


CAUTION! and requests that the user refer to the user manual
before using the instrument.

removal from HAZARDOUS LIVE conductors is permitted.
DEFINITION OF MEASUREMENT CATEGORIES (CAT)
CAT IV:
primary overcurrent protection devices, ripple control units, or meters.
CAT III: For measurements performed in the building installation at the distribution level, such
 
CAT II: For measurements performed on circuits directly connected to the electrical
distribution system, such as measurements on household appliances or portable
tools.
RECEIVING YOUR SHIPMENT
Upon receiving your shipment, make sure that the contents are consistent with the packing

claim immediately with the carrier, and notify your distributor with a detailed description of any
damage immediately.

CURRENT PROBE - MD304 DRAWING
ELECTRICAL SPECIFICATIONS
Current Range:

Transformation Ratio:
100:1
Output Signal:
10 mA AC/A
Overload:
700 A for 10 min
Accuracy*:
Primary
Current 25 A 100 A 250 A;
500 A 600 A
Accuracy % 5 % 2.5 % 2 % 3 %
Phase Shift    


(20 to 75) % RH, external magnetic field

current carrying conductor, test sample

Frequency Range:

(error: add 1 % to ref.)
Load Impedence:
0.1 
Working Voltage:
Common Mode Voltage:
Inuence of Adjacent Parallel Conductor:
< 30 m A/A at 50 Hz
Inuence of Conductor in Jaw Opening:
< 1 %

Weight:

Colors:
Dark gray handles
Output:

banana plugs
SAFETY SPECIFICATIONS
Electrical:
Double insulation or reinforced insulation be-
tween the primary or secondary and the outer



Electromagnetic Compatibility:






ORDERING INFORMATION
Current Probe MD304 ..............Cat #1201.37
Accessories:

(to nonrecessed plug).................Cat #1017.45
MECHANICAL SPECIFICATIONS
Operating Temperature:

Storage Temperature:

Inuence of Temperature:

Altitude:
Operating: (0 to 2000) m

Jaw Opening:
1.3 in (33 mm)
Maximum Conductor Size:

Maximum Bus Bar Size:

Envelope Protection:

Drop Test:

Mechanical Shock:

Vibration:
10/55/10 Hz, 0.15 mm

Polycarbonate Material:


Dimensions:

OPERATION

page 1.
Making Measurements with the AC Current Probe Model MD304
• Connect the black and red terminals to the Ampere AC range of your DMM or current
measuring instrument. Select the appropriate current range (10 AAC range). Clamp the
probe around the conductor to be tested with the arrow pointed toward the load. Read the

AC)
• For best accuracy, avoid if possible, the proximity of other conductors which may create
noise.
Tips For Making Precise Measurements
• When using a current probe with a meter, it is important to select the range that provides
the best resolution. Failure to do this may result in measurement errors.
• Make sure that probe jaw mating surfaces are free of dust and contamination.
Contaminants cause air gaps between the jaws, increasing the phase shift between


MAINTENANCE
Warning
• For maintenance, use only original replacement parts.
• To avoid electrical shock, do not attempt to perform any service on the device unless you

• To avoid electrical shock and/or damage to the instrument, do not allow water or other
foreign agents to come into contact with the probe.
Cleaning
To ensure optimum performance, it is important to keep the probe jaw mating surfaces clean at


REPAIR AND CALIBRATION
You must contact our Service Center for a Customer Service Authorization number (CSA#).
This will ensure that, when your instrument arrives, it will be tracked and processed promptly.
Please write the CSA# on the outside of the shipping container.
Ship To: Chauvin Arnoux®®
15 Faraday Drive
 
  
  
  
  [email protected]
(Or contact your authorized distributor)
NOTE: You must obtain a CSA# before returning any instrument.
TECHNICAL AND SALES ASSISTANCE

operation or application of your instrument, please call, e-mail or fax our technical support team:
Contact: Chauvin Arnoux®®
  
  •[email protected]
LIMITED WARRANTY
The current probe is warrantied to the owner for a period of two years from the date of
®

®

Full warranty coverage and product registration is available on our website at:
www.aemc.com/warranty.html.
Please print the online Warranty Coverage Information for your records.
