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The GMC METRAHIT H+E CAR is a measuring instrument for testing the electrical safety of electric and hybrid vehicles. The METRAHIT H+E CAR includes the following tests and measurements:
• Protection against direct contact during charging and discharging
• Protection against indirect contact during discharging (battery in the vehicle) and charging of the traction battery
• Insulation and dielectric strength (insulation resistance between all electric components of the high voltage system and the vehicle frame)
• Insulation of the battery (insulation resistance between the high voltage battery poles and the metallic tray/vehicle frame)
• Voltage of capacitors
• Protection type of electric equipment
• Testing of charging regulators
• Testing of electric motor (nominal voltage, power, speed)
Real-Time Clock
Accuracy ±1 minute per month
Temperature
Influence 50 ppm/K
Reference Conditions
Ambient
temperature +23 °C±2 K
Relative humidity, 40 ... 60%
Measured quantity
frequency 45 ... 65 Hz
Measured quantity
wave shape Sinusoidal, deviation between RMS and
rectified value < 0.1%
Storage battery voltage 3.6 V ± 0.2 V
Display
LCD panel (65 mm x 30 mm) with display of up to 3 measured
values, unit of measure, type of current and various special
functions.
Display / char. height 7-segment characters
Main display: 12 mm
Auxiliary displays: 7 mm
Number of places 4¾ places, 30999 steps
Overflow display “OL” appears
Polarity display “–” sign is displayed if plus pole
is connected to l
LCD Test All display segments available during
operation of the METRA HIT 27 are
activated after the instrument is switched on.
Background
illumination METRA HIT 27I only
Power Supply
Storage batteries 3 ea. 1.2 V/2100 mAh NiMH (AA size)
Service life with 2100 mAh NiMH storage battery set
Additional consumption for:
Interface operation: 0.5 mA
LCD illumination: 25 mA at 3.6 V. If voltage drops below
2.7 V, the instrument is switched off automatically.
Storage battery test -||−is displayed automatically if storage battery
voltage drops to below approx. 3.3 V
Storage battery charging with NA HIT 2x (Z218H) mains power battery
charger (2100 mAh storage battery set:
recharging time 20 hours)
or
with external NiMH quick charger Z206D:
recharging time approx. 2 hours
Fuses
Fuse links for all mΩ
measuring ranges FF (UR) 1.6 A/1000 V AC/DC,
6.3 mm x 32 mm, 10 kA switching
capacity at 1000 V AC /DC and ohmic
load
Acoustic Signal For display > 610 V in 600 V range
(intermittent tone, 250 ms on/off)
Electrical Safety
Safety class II per IEC/EN 61010-1:2001
/VDE 0411-1:2002
Measurement category II
Operating voltage 600 V
Fouling factor 2
Test voltage 3.5 kV~ per IEC/EN 61010-1:2001/
VDE 0411-1:2002
Electromagnetic Compatibility (EMC)
Interference emission EN 61326-1:2006 class B
Interference immunity EN 61326-1:2006
EN 61326-2-1:2006
Data Interface
With BD232 interface adapter as accessory:
Data transmission Optical via infrared light through the
housing
Type RS 232 C, serial, per DIN 19241
Bidirectional baud rate (read and write)
SI232-II: all baud rates
BD232: 9600 baud
Ambient Conditions
Accuracy range 0 °C ... +40 °C
Operating temp. -10 °C ... +50 °C
Storage temperature -25 °C ... +70 °C (w/o storage batteries)
Relative humidity 40% ... 60%,
no condensation allowed
Elevation to 2000 m
Deployment Indoors only, except within specified
ambient conditions
Mechanical Design
Protection Housing: IP 54, connector jacks: IP 20
Dimensions 84 mm x 195 mm x 35 mm
Weight approx. 420 gr. with storage batteries
(without GH18 protective rubber cover)
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