User Manual

25
In the case of a 4-wire three-phase set-up, the neutral current sensor is simulated if the 3 phase sensors are identical.
The various current sensors are:
MN93 clamp: 200 A.
MN93A clamp: 100 A or 5 A.
C193 clamp: 1000 A.
J93 clamp : 3500 A.
AmpFLEX™ A193: 100, 6500 or 10000 A.
MiniFLEX MA193: 100, 6500 or 10000 6500 A.
PAC93 clamp: 1000 A.
E3N clamp: 100 A (sensitivity 10 mV/A).
E3N clamp: 10 A (sensitivity 100 mV/A).
Three phase adapter: 5 A or Essailec
®
.
If an MN93A clamp (5A range) or an Adapter is used, the current ratio setting is proposed automatically.
If an MN93A clamp (5A range), an Adapter, an AmpFLEX™, a MiniFLEX, or an E3N clamp is used, adjustment of the ratio, of the
range, or of the sensitivity is proposed automatically.
Use the arrow keys (,, , ) to define the transformation ratios between the primary current (1A to 60,000A) and the second-
ary current (1A, 2A or 5A), then validate with the

key.
The primary current cannot be less than the secondary current.
4.7.2. VOLTAGE RATIOS
A second screen V or U, defines the voltage ratios.
The programming of the ratio or ratios can be different or the same for all or for some channels.
The ratios to be programmed are phase-to-neutral voltage ratios when there is a neutral and phase-to-phase voltage ratios when
there is not.
To change the ratios, press the

key.
Figure 27: The Voltage Ratios screen in the Sensors and
ratios menu in the case of a set-up without neutral
Figure 28: The Voltage Ratios screen in the Sensors and
ratios menu in the case of a set-up with neutral
Use the arrow keys (,) to choose the configuration of the ratios.
 3U 1/1 or 3V 1/1: all channels have the same 1/1 ratio.
 3U or 3V: all channels have the same ratio, to be programmed.
 Press the

key, then use the , keys to highlight the ratio in yellow.
 Press the

key, then use the ,, and  keys to change the ratio. The primary voltage is in kV and the secondary
voltage is in V.