Common Specifications Continued
SAFETY
Double insulation or reinforced insulation between primary, secondary
and outer case of handle per IEC 1010-2-032.
·
600 V Category III, Pollution: 2
Electromagnetic Compatibility:
·
Susceptibility in accordance with EN 50082-2 and EN 50082-1
·
Electrostatic discharge IEC 1000-4-2
Test voltages: 4 kV level 2 in contact, aptitude criteria B
8 kV level 3 in the air, aptitude criteria B
·
Radiated Field IEC 1000-4-3 (1995)
With max. interference of 5% of the measurement range:
3 V/m level 3, aptitude criteria A
·
Fast transients IEC 1000-4-4 (1995):
Test voltage: 1 kV level 2, aptitude criteria B
·
Magnetic fields at the frequency of the network to IEC 1000-4-8 (1995):
With a max. distortion of 0.5 A: 30 A/m 50 Hz level 4, aptitude criteria A
·
Emissions in accordance with EN 50081-1
·
Radiated emission through the case to EN 55022 (1994): class B
·
Conducted emission to EN 55022 (1994): class B
Making Measur ements wi th the Model s HHM73 and HHM76
wit h the Accessor y Banana/BNC Connect or
·
The probes may be used with a DMM with the use of a Banana/BNC
Connector XF-SS Part #2111.32.
·
Plug the probe into the display device (e.g., DMM, logger). Note the
polarity of the probe output banana plugs (red = positive [+], black =
negative [-]).
·
Select the appropriate range on the display device Note that the
probeÕs outputs are 1 mV/A and 10 mV/A AC or DC. Note the
maximum current capability on 10 mV/A range
·
Turn display device power on. Turn on (7) the probe: the green LED
(6) should be on, and the red LED (5) off. If the green indicator does
not come on or goes off before the probe has operated for 10 min., it is
necessary to replace the battery (see ÒBattery Replacement,Ó pg. 18).
·
After approximately 10 minutes of operation, if none of the control
buttons has been manipulated power will automatically shut off (see
ÒAuto-OffÓ below).
I ndicat or Li ght s: Gr een LED and Red LED
·
The green LED (6) indicates that the probe is on and that the battery is
good. The green LED will not light under low battery conditions.
Replace the 9 V battery if the green LED is not lit.
·
The red LED (5) indicates a momentary or continuous overload of the
instrument. Readings taken while the red LED is on or flashing should
be considered inaccurate. Momentary or continuous currents
exceeding 60 A peak on the 60 A range or 600 A peak on the 600 A
range for the Model HHM73, and 150 A peak on the 150 A range or
1500 A on the 1500 A range for the Model HHM76 will trigger the red
LED.
Aut o- Of f
·
The Models HHM73 and HHM76 have an Auto-off feature which turns
off the instrument after 10 minutes if no control has been used.
·
When the probe is switched off by this automatic function, the switch
(7) must first be set to the off position before the probe may be
powered up again.
·
Auto-off may be disabled at power-up by the user. Simply press the
auto zero button (4) at the same time as moving the switch (7) from
the OFF position to one of the ranges. The green LED (6) blinks three
times to indicate that the auto-off is disabled.
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