Controller
10
Optional function
Electric energy
11
storage mechanism
Shunt release/
12
Maintained type
Shunt Release
Closed
13
electromagnet
Under-voltage
release/no-voltage
14
release/voltage-
check closing
device
Under-voltage
release/loss of
15
voltage release
Delay time/voltage-
check harness
Internal & confidential file
File No.:NDT2920202
Protection type: Not-standard - conventional type, V - voltage measurement
and protection, P - harmonic measurement and protection
Communication function: H (Modbus protocol) MP (Profibus-DP protocol)
MD (Devicenet protocol)
Signal unit: S1- 4DO
S2- 3DO, 1DI
Remote reset function: Z1(AC380V/AC400V), Z2(AC220V/AC230V),
Z3(DC220V), Z4(DC110V), Z5DC(24V)
3P+N grounding mode (optional for the external N-pole transformer): T -
Differential type (not to write in default) W - Ground current type
N1 - External N-phase
transformer (62*21)
N2 - External N-phase
transformer (102*32.5)
N3 - External N-phase
transformer (122*52)
N4 - External N-phase
transformer (262*102)
NR1 - External flexible
transformer (280mm)
NR2 - External flexible
transformer (370mm)
NR3 - External flexible
transformer (450mm)
Protection form of current leakage: E-type (including the external current
leakage transformer)
Contact wear equivalent, operation times query (NWK21/31 optional): J
D1-AC380V/AC400V,D2-AC220V/AC230V,D3-DC220V,D4-DC110V, D5-DC24V
F1-AC380V/AC400V, F2-AC220V/AC230V,F3-DC220V, F4-DC110V, F5-DC24V
F6-AC230V/DC220V (maintained type) Applicable: 2500/4000 shell frame
B1-AC380V/AC400V,B2-AC220V/AC230V,B3-DC220V,B4-DC110V, B5-DC24V
Under-voltage release: Q1-AC380V/AC400V, Q2-AC220V/AC230V,
Q3-DC220V, Q4-DC110V, Q5-DC24V
Loss of voltage release: S1-AC380V/AC400V, S2-AC220V/AC230V
Voltage-check release: S1-AC380V/AC400V, S2-AC220V/AC230V
Conventional undervoltage delay: 0-Instantaneous,
1-1s delay, 3-3s delay, 5-5s delay
NDW3-1600/6300/7500 voltage loss delay: 0s~10s user adjustable (factory
default setting is 3s), the step length is 1s;
NDW3-2500/4000 voltage loss delay: 0-Instantaneous, 1-1s delay, 3-3s delay,
5-5s delay
NDW3-2500 voltage-check harness: 0 - with harness, 1 - without harness
第 143 页 共 149 页
S3-2DO, 2DI
Applicable to NDW3-1600
Applicable to NDW3-1600/2500
Applicable to
NDW3-2500/4000/6300/7500
Applicable to
NDW3-2500/4000/6300/7500
Applicable to 200A-800A
Applicable to 1000A-2000A
Applicable to 1000A-7500A
File Version:4
1. This shall be omitted
if the controller has no optional
function; NWK21/NWK31
controller only has S1-4DO;
2. Z1 is not available with the
NDW3-1600 remote reset
function;
3. Choose one from the
communication functions of
"H", "MP", "MD";
4. For the controller with "V"
and "P" functions, the voltage
module P2 is optional for the
main circuit rated voltage
above AC500V.
5. Signal unit and voltage
detection unit cannot be
selected at the same time.
1.6300/7500 frame has no DC24V
2. When choosing 2500/4000
shell frame, choose one of the
shunt release and the holding type
shunt release
1. Under-voltage release, no-
voltage release or voltage-check
switch device
2. To be selected during
ordering; this shall be omitted
if without this accessory
3. The special under-voltage
release and closed
electromagnet controlled by
the voltage-check closing
device are internal accessories,
while the voltage-check closing
controller module is the
external accessory (applicable
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