Overview; Series Line-Up And Polyphase System Configuration - NF DP Series Instruction Manual

1. Outline
1.1

Overview

Programmable AC power source DP series offers a compact, lightweight, and highly-efficient power
system, ranging from single-phase 1.5 kVA to three-phase 36 kVA at a maximum. It also provides
various interfaces such as the external control input/output, communication interface, and remote
controller (some of them are optional) to address a wide variety of usage. You can configure several
products of the configurable single-phase model to participate in a single-phase three-wire system or
three-phase system by using a System Cable (optional).
The AC output of DP series ranges from 0 to 320 V for voltage (phase voltage) and 1 to 550 Hz for
frequency, and the DC voltage output ranges from 454 V to +454 V. The maximum output current
(phase current) is 120 Arms continuous (single-phase 12 kVA, 100 V range), and if you use a
capacitor input type rectified load, you can output a peak value of 480 Apk at a maximum
(single-phase 12 kVA, 100 V range, crest factor of 4).
Also, programmable AC power source DP series Type R is added a reverse power flow capability to
DP series, ranging from single-phase 1.5 kVA to three-phase 27 kVA at a maximum which is a
polyphase system.
The AC output of DP series Type R ranges from 0 to 320 V for voltage (phase voltage) and 1 to
550 Hz for frequency, and the DC voltage output ranges from 454 V to +454 V. The maximum
output current (phase current) is 90 Arms continuous (single-phase 9 kVA, 100 V range), and if you
use a capacitor input type rectified load, you can output a peak value of 360 Apk at a maximum
(single-phase 9 kVA, 100 V range, crest factor of 4).
* It is to be noted that regeneration from the load is described as "reverse power flow" in this
manual. Also, it is to be noted that DC regeneration is described as "sink current" and DC power
running is described as "source current".
1.2

Series Line-up and Polyphase System Configuration

In DP series and DP series Type R, multiple models (single-phase model, polyphase model) are
available with various combinations of output capacity and output phase configuration. The lineups
of single-phase model and polyphase model are listed in Table 1-1.
DP series also offers the Multi-phase model which can switch the output phase configuration
(single-phase two-wire, single-phase three-wire, or three-phase four-wire) on a cabinet. When you
set the "phase configuration setting switch" of the Multi-phase model and then turn on the power,
the model operates as single-phase model or polyphase model as shown in Table 1-2. The operation
specification, performance specification, and manipulation method of the Multi-phase model follow
those of the single-phase model and polyphase model of DP series shown in Table 1-2.
The model naming system of DP series is shown in Figure 1-1, and that of DP series Type R is
shown in Figure 1-2.
For the single-phase model, you can connect two or three products of the configurable model using
an optional System Cable to allow single-phase three-wire output or three-phase four-wire output,
respectively (polyphase system). The polyphase system configurations are listed in Table 1-3 to
Table 1-5.
2 PROGRAMMABLE AC POWER SOURCE