Manual

GSC53N - GSC57 - ZG47
EN - 6
2. GENERAL DESCRIPTION
2.1. INTRODUCTION
Dear Customer, we thank you for your patronage. The instrument you have just purchased
will grant you accurate and reliable measurements provided that it is used according to the
present manual’s instructions.
The instrument was designed to grant the user the utmost safety conditions thanks to a
new concept assuring double insulation and over voltage category III.
This instruction manual is referred to three models: GSC57, GSC53N and ZG47.
Differences among models are:
LOW 10A function performed by GSC57 model only.
Use of HTFLEX33 flexible clamps 1000A/3000A without any external control logic,
available with models GCS53N and ZG47.
2.2. FUNCTIONS
The instrument is able to perform eh following test:
 LOW : Continuity Test of Protection and Equalising conductors with test current
higher than 200mA and open circuit voltage ranging from 4V to 24V.
 M : Measurement of insulation resistance with DC test voltage 50V, 100V,
250V, 500V or 1000V.
 RCD: Measurement on common and/or selective RCDs AC type ( ) and
A type ( ) of the following parameters:
 Tripping time.
 Tripping current.
 Contact voltage (U
t
).
 Global earth resistance (R
a
).
Under this mode the instrument can measure the overall earth
resistance without causing RCD tripping.
 LOOP : Measurement of line and fault loop impedance with calculation of
prospective short circuit current, Measurement of fault loop impedance
between phase and earth and Global Earth resistance measurement
without RCD tripping and calculation of prospective short circuit
current, Indication of phase rotation sequence
 EARTH Measurement of Earth Resistance and Resisivity using Earth rods.
 LOW 10A: Continuity Test of Protection and Equalising conductors with test current
higher than 10A (GSC57 only).
 AUX: Measurement and Recording of leakage current and environmental values
(temperature, humidity, Air Speed, illuminance and Sound level).
 ANALYSER: The Instrument allows the following operations:
 display in real time the electrical parameters of a single phase and
three-phase systems (with and without neutral wire) and the harmonic
analysis of voltages and currents.
 conduct a direct Energy measurement (without memorizing).
 memorize (pressing SAVE key) the sampled values of the
Parameters present at instrument input generating a "Smp" record
inside instrument memory. It will be possible to analyse the
memorized data ONLY by transferring it to a PC.