PD2-6400
Helios High Voltage & Current Meter
www.predig.com
11
0-5 AAC
Transformer
Lighting System
0-5 AAC
A
Generator (120 VAC)
Load
+
≈
120 VAC
–
2
5
V
Voltage/Current Input Application Example
Voltage/Current Input Wiring Example
with AC Switch Selected
Model PD6400 High Voltage & Current Meter
Instruction Manual
20
Figure 9. DC Voltage Input Connections
Current Input
The following figures show examples of connecting the meter for a current
input. Note that in addition to the connections, the AC/DC type switch
much also be set.
Figure 10. AC Current Connections
Figure 11. AC Current Transformer Connections
Model PD6400 High Voltage & Current Meter
Instruction Manual
22
Figure 14. AC Current Transformer and Voltage Connections
Figure 15. DC Current and Voltage Connections
Apparent Power Measurement Using a Current Transformer
Current Measurement for a Lighting System
APPLICATION EXAMPLES
The PD2-6400 Helios can be used to display application data for voltage, current, or both. Each Channel, Voltage or Current, can
be scaled independently. The following examples show just a few of the PD2-6400’s application capabilities using generators
and transformers. Each example is followed by a wiring diagram that shows proper switch position for the meter.
Voltage Input Application Example
Voltage Input Wiring Example
with AC Switch Selected
Model PD6400 High Voltage & Current Meter
Instruction Manual
19
Power Connections
Power connections are made to a two-terminal connector labeled
POWER on Figure 6. The meter will operate regardless of DC polarity
connection. The + and - symbols are only a suggested wiring convention.
Figure 7. Power Connections
Signal Connections
Signal connections are made to a four-terminal connector labeled
SIGNAL on Figure 6. The I+ and I- terminals are used for Channel A
(CH-A) as the current input terminals. The V+ and V- terminals are used
for Channel V (CH-V) as the voltage input terminals.
In addition to the signal connections, the switch labeled TYPE on Figure
6 must be set to AC (alternating current) or DC (direct current) to accept
the corresponding type of voltage and current signals.
Voltage Input
The following figures show examples of connecting the meter for a
voltage input. Note that in addition to the connections, the AC/DC type
switch much also be set.
Figure 8. AC Voltage Input Connection
AC or DC
POWER
Required External Fuse:
5 A max, 250 V Slow Blow
POWER
+ -
Voltage Measurement for a Generator Driving a Load
Current Input Wiring Example
with AC Switch Selected
Current Input Application Example
Load
120 VAC @
700 AAC
0-5 AAC
Current
Transformer
2
5
A
V
