14
●
After inserting the electric wire into the terminal, tighten it using the applicable tightening torque.
When tightening screws again, start slowly and do so in the vertical direction.
Applicable tightening torque
: 0.5 to 0.6 N·m
Flathead screwdriver as a tool
: Tip thickness of 0.6 mm, total width of 3.5 mm
[Recommended screwdriver: PHOENIX CONTACT screwdriver model SZS 0.6
×
3.5]
Electric wire covering stripped length
: 7 mm
●
Electric wire terminal treatment: For a solid wire, the electric wire can be connected with the
covering stripped.
For a twisted wire, strip the covering, twist the core, and then insert it into the junction area.
Make sure that the core filler does not short neighboring poles. Do not solder the core.
The following pin terminals (crimped terminals) are also available for purchase.
PHOENIX CONTACT
Electric wire cross-section area of 0.25 mm
2
: AI 0.25-8 YE (product number 3200852)
Electric wire cross-section area of 0.5 mm
2
: AI 0.5-8 WH (product number 3200014)
Electric wire cross-section area (for two wires) of 0.5 mm
2
×
2 : AI-TWIN 2
×
0.5-8 WH (serial number 320933)
The products listed above may not be compatible with some electric wires. For details, contact the pin terminal (crimped terminal) manufacturer directly.
However, if using a pin terminal (crimp terminal) with a metallic portion longer than 7 mm, cut the metallic portion to 7 mm as shown in the figure below.
Do not forcefully pull the connection
cable. Doing so may result in a
disconnection of the cable.
3.4 Wiring of MDU terminal block
3.4.1 External mounting type
3.4.2 Panel mounting type
●
See below for compatible electric current sizes for the MDU terminal block.
One connected
Two connected
Solid wire
φ
0.45 to
φ
1.2 mm
φ
0.45 to
φ
0.8 mm
(*)
0.14 to 1.5 mm
2
0.14 to 0.75 mm
2
Twisted wire
Pin terminal
Metallic portion
Cut here.
7 mm
L2
L1
MDU
Insulated crimp
terminals
Caution
Caution
Securely insert the connection cable coming out from the MDU Breaker main unit into the MDU connector (until the lock clicks into place).
(3.3.1 Figure 21 on page 12.)
●
Use a suitable size of electric wire for crimped terminal.
●
Ground (class D) the earth terminal. Connect earth terminal to mounting plate with the cable FG (green) from MDU unit.
●
Do not connect three or more electric wires to avoid heating or fire due to loose connection.
●
Do not connect anything to unsused terminals. Erroneous connection will cause failure.
●
Do not put too much tension on electric wire to avoid pulling terminal block out.
4 Connecting cable connection
Caution
Caution
<Binding the cable>
Binding band
attachment
location
Secure with the binding band in
such a way that direct force is not
applied to the MDU connector.
(No binding band is included.)
Summary of Contents for NF250-HEV
Page 62: ...MEMO ...
Page 63: ......
Page 64: ...Nov 2019 LN107A330H02 IB63E30 A 1911 MEE MDU Breakers ...