ST1952 Operation Manual
15
Function
Input Terminals
Maximum Allowable Input
DCV
to COM
1010V DC
ACV, FREQ
to COM
760V AC
100mA current
500mA to COM
120mA DC or 120mA AC
10A current
12A to COM
12A DC or 12A AC
Resistance, diode,
continuity
to COM
200V DC or 200V AC RMS
All functions
Any terminals to earth
1000V DC 1000V AC Peak
Capacitance
to COM
1.2mF
Temperature
to COM
-200—650°C
2.4.3 High Energy Circuit Safety Precautions
To optimize safety when measuring voltage in high energy distribution circuits, read and use the
directions in the following warning.
When making measurements in high energy circuits, use test leads and accessories that meet the
following requirements:
Test leads and accessories must be fully insulated.
Only use test leads that can be connected to the circuit (e.g., alligator clips, spade lugs, etc.) for
hands-off measurements.
Do not use test leads or accessories that decrease voltage spacing. This diminishes arc
protection and creates a hazardous condition.
Use the following sequence when measuring high energy circuits:
1. De-energize the circuit using the regular installed connect-disconnect device, such as a circuit
breaker, main switch, etc.
2. Attach the test leads to the circuit under test. Use appropriate safety rated test leads for this
application.
3. Set the multimeter to the proper measurement function and range.
4. Energize the circuit using the installed connect-disconnect device and make measurements
without disconnecting the multimeter.
5. De-energize the circuit using the installed connect-disconnect device.
6. Disconnect the test leads from the circuit under test.
WARNING: The maximum common-mode voltage (voltage between COM and the chassis
ground) is 500V peak. Exceeding this value may cause a breakdown in insulation,
creating a shock hazard.
2.4.4 Power-on Defaults
Model ST1952 uses the factory default settings for the power-on settings.
Since the basic measurement procedures in this manual assume the factory defaults, reset the
