CIRCUTOR CVM144 Series - Manual (Page 8)

----- Supply network analyzer CVM-144 ------ User's manual --- Page No. 7
b.-Maximum voltage at the voltage measuring circuit:
Standard : 300 V a.c. phase-to-neutral/520 V a.c. phase-to-phase
45 to 65 Hz
Other models on request :
CVM-144-measuring 500 V: 500 Va.c. phase-to-neutral/866 Va.c. phase-to-phase
CVM-144-measuring 110 V: 110 Va.c. phase-to-neutral/190 Va.c. phase-to-phase
c.- Maximum allowable current : Current Transformer of In / 5 A a.c.
d.- Operation conditions :
- Operation temperature range : -10 to +50 ºC
- Humidity
: 5 to 95 % R.H. non-condensing
- Altitude : below 2000 m
e.- Safety :
- Designed to meet protection class III- 300 V a.c. as (EN 61010).
- Protection against electric shock by class II double-isolation
Mounting:
Instrument is to be mounted on panel (cut-out 138
+1
x 138
+1
mm, as per DIN
43 700). All connections keep inside the cabinet.
Note that with the instrument powered on, the terminals could be dangerous to
touching and cover opening actions or elements removal may allow accessing
dangerous parts. Therefore, the instrument must not be used until this is completely
installed.
The instrument must be connected to a power supply circuit protected with gl
type (IEC 269 ) or M type fuses rated between 0.5 and 2 A. This circuit should be
provided with a circuit breaker or any equivalent element to connect (ON) or
disconnect (OFF) the instrument from the power supply network. The supply and
measuring voltage circuits will be both connected through a wire with a minimum
cross-section of 1 mm
2
.
The line of the current transformer secondary will have a minimum cross-
section of 2,5 mm
2
.