MidNite Solar MNCLIPPER User manual

The MNCLIPPER works with the MidNite Solar Classic MPPT Charge Controller to provide
the highest level of performance and protection possible.
Features:
Helps protect turbine from overspeed.
Braking feature included.
Convenient switching between run / turbine Stop.
Settable voltage threshold for clipping.
50 Amp pass-through.
D.C. or Three Phase AC models with heavy duty three phase bridge rectifier.
AC model Converts three phase AC input to D.C. for the Classic.
Durable powdercoated chassis.
MNSPD Surge protective devices (optional) can be added for protection against surges.
Available in 1.5 and 4.0 KW models.
MidNite Solar Clipper Instructions

Clipper Instructions (continued)
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IMPORTANT SAFETY INSTRUCTIONS
SAVE THESE INSTRUCTIONS - These instructions contain important safety and operating instructions for the MidNite Solar
MNClipper.
If you do not fully understand any of the concepts, terminology, or hazards outlined in these instructions, please refer installation
to a qualified dealer, electrician or installer. These instructions are not meant to be a complete explanation of a renewable energy
system.
GENERAL PRECAUTIONS
If service or repair should become necessary, contact MidNite Solar Inc. Improper servicing may result in a risk of shock, or fire.
To reduce these risks, disconnect all wiring before attempting any maintenance or cleaning. Turning off the inverter will not reduce
these risks.
Do not work alone. Someone should be in the range of your voice or close enough to come to your aid when you work with or near
electrical equipment.
Remove rings, bracelets, necklaces, watches etc. when working with batteries or other electrical equipment. Power from RE
sources makes a very effective arc welder with dire consequences if one of the welded pieces is on your person.
Table of contents.
Theory of operation ---------------------------------------------------------------------- 3
Major Components ---------------------------------------------------------------------- 3
Installation --------------------------------------------------------------------------------- 5
Wiring the Clipper ------------------------------------------------------------------------ 7
Knockout Locations ---------------------------------------------------------------------- 8
Clipper set-up and clipping voltage--------------------------------------------------- 11
Product Specifications------------------------------------------------------------------- 11
Using with a Classic MPPT Charge Controller--------------------------------------- 12
Clipper Operation ------------------------------------------------------------------------- 13
Resistor Module --------------------------------------------------------------------------- 13
Wiring Diagrams -------------------------------------------------------------------------- 16
Turbine Presets when used with your Classic--------------------------------------- 18
Warranty ------------------------------------------------------------------------------------ 20
Contact information ----------------------------------------------------------------------- 20
Notice of Copyright
MidNite Solar Clipper User’s Manual
Copyright © 2012, 2019 all rights reserved.
Disclaimer
Unless specifically agreed to in writing, MidNite Solar Inc.
(a) Makes no warranty as to the accuracy, sufficiency or suitability of any technical or other information
provided in its manuals or other documentation.
(b) Assumes no responsibility or liability for loss or damage whether direct, indirect, consequential or incidental,
which might arise out of use of such information. The use of any such information will be entirely at the user's risk.
MidNite Solar 17722 - 67thAve N.E. Arlington, Wa 98223 U.S.A.
360.403.7207 [e-mail] www.midnitesolar.com

Clipper Instructions (continued)
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Theory of operation:
The Classic charge controller uses its AUX output to control the Clipper. As the batteries become charged and loads
lessen the voltage will rise. When the voltage reaches pre-set levels, the Classic will send a pulse width modulated
signal to the Clipper. This signal will engage the load resistors as needed to load down the input to a safe level. The
Clipper also has a built in Self Powered user adjustable emergency fail safe max voltage setting. This will allow the
clipper to keep the turbine under control if communications are lost with the Classic.
Caution:
Parts of the Clipper get hot during normal operation and high voltage is present at many locations. Do not touch
any internal components of the Clipper until all power has been removed and the Clipper has had time to cool
down.
The internal fan is temperature controlled and may run anytime that power is applied.
Three Phase Solid State Relay
AC Clipper Major Components
Three Phase Bridge Rectifier
RUN/STOP Slider
50 Amp Input Breakers
Resistor Module
(Load Bank)
Three Phase Input from Turbine
Main PCB

Clipper Instructions (continued)
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Caution:
Parts of the Clipper get hot during normal operation and high voltage is present at many locations. Do not touch
any internal components of the Clipper until all power has been removed and the Clipper has had time to cool
down.
The internal fan is temperature controlled and may run anytime that power is applied.
DC Clipper Major Components
DC Solid State Relay
Rectifier
RUN/STOP Slider
50 Amp Input Breakers
Resistor Module
(Load Bank)
DC Input from Turbine
Main PCB
Snubber PCB

Clipper Instructions (continued)
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INSTALLATION:
Mounting the MNClipper:
Mounting the MNClipper is not a difficult task but a little planning now can save a lot of grief later. It is
recommended that you read and fully understand all the installation instructions and safety precautions before
proceeding.
Parts Included are:
1 - MNClipper
2 - Mounting brackets
4 - 6mm Threadforming screws
1 - Instruction manual
Tools required for mounting the MNClipper are:
#2 Phillips screwdriver, stud finder and a level. A drill may be required to drill pilot holes.
The Clipper has a type 1 enclosure and should be installed only in a protected dry indoor location with adequate
ventilation on all sides. The air exiting the exhaust of the Clipper will be hot when the Clipper is slowing the turbine.
A minimum of 8” of clearance on the sides and bottom and 24” above the Clipper are recommended. The Clipper is
somewhat heavy it is a good idea to be sure that the mounting surface can handle the weight. Also ensure that the
mounting surface is heat resistant.
Remove the 4 screws on the Clipper door and set aside to reinstall later.
Locate the two mounting brackets included with the MNClipper. The narrower side of the mounting bracket with
the smaller holes goes towards the MNClipper with the other side towards the mounting surface. The top and
bottom brackets are identical.
First, install the bottom mounting bracket onto the Clipper using two of the included M6 threadforming screws.
Next, partially screw the remaining two M6 threadforming screws into the two holes on the narrower side of the
top mounting bracket that line up with the keyhole slots on the upper back of the Clipper. The screws should be left
just far enough out to allow the chassis to slide down into the keyhole slot.
Bottom mounting bracket
shown installed.

Clipper Instructions (continued)
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Use a level and hold the top mounting bracket on the wall in a horizontal position and mark on the wall where the
mounting screw holes will be placed. The mounting brackets are designed to line up with 16” centers.
If required, drill pilot holes using a #10 (0.193” diameter) drill bit.
Drill appropriately sized holes for heavy duty anchors (sold separately) when installing on non-wood surfaces.
Secure the top mounting bracket to the wall using three ¼ X 1½ hex-head lag bolts (not included). Make sure that
the outer two lag bolts are securely fastened into a stud. If mounting to other than a wood wall or surface, use
appropriate screws and anchors as required. It is the installer’s responsibility to ensure the adequacy of the wall
mounting.
Lift the Clipper and place the keyhole slots (located on the upper back of the Clipper) directly over the mounting
screws on the upper mounting bracket on the wall and lower into place.
Tighten the top mounting screws to secure the Clipper to the mounting bracket.
Secure the bottom mounting bracket to the wall using three ¼ X 1½ hex-head lag bolts (not included).
Be sure to observe NEC mounting height requirements.
Mounting a Classic charge controller :
With an MNCCB-L Left side mounting bracket (Sold
separately) and three countersunk screws secure
the MNCCB-L bracket to the side of the Clipper.
Required screws are included with the MNCCB-L.
Install the MNCCC-K conduit nipple on the lower
knockout on the Clipper.
Remove the four screws on the face of the Classic
and remove the cover. Caution –the MNGP cable
connects the front of the Classic to the back and is
fairly short. Carefully move the cover away just a
little and disconnect the cable. Set the face aside
for now.
Position the Classic on the bracket and secure with
screws. Install the nuts on the conduit nipple to
secure it in place. Three nuts are supplied with the
MNCCC-K. One is used as a spacer. After all wiring
to the Classic is complete, reconnect the MNGP
cable and re-install the cover.
Circuit breakers are required on the input and
output of the Classic Charge Controller.
MNEDC DC Circuit breakers are ideal for this.
See page 8 for breaker knockout location.
Refer to the Classic installation manual for further
details including sizing of input and output
breakers.
MNCCC-K Close Nipple
(Sold Separately)
MNCCB-L Left Classic
Mounting bracket
(Sold separately)
Countersunk screws
MNEDC
DC Circuit breaker
(Sold Separately)

Clipper Instructions (continued)
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Wiring the Clipper:
Do not alter factory pre-wired connections!
The Clipper is a complex device and should only be installed by an experienced installer!
The wiring diagrams beginning on page 16 show the various configurations of the Clipper. The wiring inside the
dashed lines shows the connections in from the turbine and out to the charge controller.
Be sure to comply with all local and national code requirements including National Electrical Code ANSI/NFPA 70.
Use Class 1 wiring methods for field wiring connections to terminals of a Class 2 circuit. Use only 14-2/0 gauge
AWM wire. Select the wire gauge used based on the protection provided by the circuit breakers/fuses.
On the following pages are drawings of knockout locations and more detailed wiring information.
Below are the torque values for the ground busbar and various circuit breakers.
Ground Busbar Torque Values
Large Busbar Screws 18 - 10 AWG 35 In Lbs.
Large Busbar Screws 8 AWG 40 In Lbs.
Large Busbar Screws 6 - 4 AWG 45 In Lbs.
Large Busbar Screws 3-1/0 AWG 50 In Lbs.
Breaker Torque Values
MNDC-GFP63 Breaker 20 In-Lbs (2.3NM)
MNDC-GFP80 Breaker 30 In-Lbs (3.4NM)
MNDC-GFP100-Dual Breaker 30 In-Lbs (3.4NM)
MNDC-GFP50-300 Breaker 20 In-Lbs (2.3NM)
MNEDC5 to MNEDC100 Breaker 30 In-Lbs (3.4NM)
MNEDC60-300, MNEDC80-300 Breaker 30 In-Lbs (3.4NM)
Typical three phase system with Classic and Clipper
(Shown with optional equipment)
Required Circuit breakers and grounds are not shown for clarity.

Clipper Instructions (continued)
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Clipper Bottom Knockout Location
Clipper Side Knockout Location
Clipper Dimensions:
25.411 Tall X 15.41 Wide
26.961 Tall including mounting brackets
Shipping Weight 55 lbs.
Knockouts for MNEDC Circuit Breakers.
A circuit breaker is required for the input and the output of the Classic.
Refer to the Classic manual for the correct breaker size for your system.

Clipper Instructions (continued)
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AC Clippers:
Connect phases 1, 2 and 3 (Phase order 1,2,3, is interchangeable) from the turbine to the corresponding lugs on the
large terminal block at the lower right of the Clipper. Knockouts are located on the sides and bottom of the Clipper
for wire entry/exit. Be sure to use appropriate grommets / conduit hubs to protect wiring from chafing.
Connect the positive and negative outputs from the Clipper PCB Terminal block TB3 to the charge controller
positive and negative inputs (refer to the documentation that came with your charge controller).
Observe proper polarity. Severe damage could result from improper wiring. Knockouts are located on the sides and
bottom of the Clipper. See Page 8 for knockout locations and sizes.
The terminal block accepts 6-20 AWG wire. Be sure to use a heavy enough gauge wire to carry all the current from
the turbine.
Connect the ground from the ground terminal busbar to earth ground.
Ground
Busbar
Three phase input from turbine
Terminal block accepts 2/0-14 AWG wire. Be sure to use a heavy
enough gauge wire to carry all the current from the turbine
TB3
Connect DC output to charge controller here.
Terminal block accepts 6-20 AWG wire.
Observe polarity.
Do not remove JP4
(Battery jumper)
Tachometer
connections are
not active at this
time.

Clipper Instructions (continued)
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DC Clippers:
Connect the turbine’s DC output to the corresponding lugs Positive and negative on the large terminal block at the
lower right of the Clipper. Knockouts are located on the sides and bottom of the Clipper for wire entry/exit. Be sure
to use appropriate grommets / conduit hubs to protect wiring from chafing.
Connect the positive and negative outputs from the Clipper PCB Terminal block TB3 to the charge controller
positive and negative inputs (refer to the documentation that came with your charge controller).
Observe proper polarity. Severe damage could result from improper wiring. Knockouts are located on the sides and
bottom of the Clipper. See Page 8 for knockout locations and sizes.
The terminal block accepts 6-20 AWG wire. Be sure to use a heavy enough gauge wire to carry all the current from
the turbine.
Connect the ground from the ground terminal busbar to earth ground.
TB3
Connect DC output to charge controller
here.
Terminal block accepts 6-20 AWG wire.
Observe polarity.
Ground
Busbar
DC input from turbine
Terminal block accepts 2/0-14 AWG wire. Be sure to use a
heavy enough gauge wire to carry all the current from the
turbine
Do not remove JP4
(Battery jumper)