23
SPEAR™ Single-Phase Recloser System
INSTALLATION AND OPERATION INSTRUCTIONS
MN280048EN June 2016
Customer connections for AC power
CAUTION
Equipment damage . Do not drill connection holes into
the top of the cabinet . Connection holes in the top
of the cabinet will allow moisture to seep into the
control and damage the components or cause control
misoperation . Failure to comply will void the control’s
factory
warranty .
T249 .0
Input power to the SPEAR Single-Phase recloser control can
be done through AC input receptacle (2-pin or 3-pin). Direct
customer connection to Terminal X1 for AC input power can
also be done if AC input receptacle option is not ordered.
DANGER
Hazardous voltage . Do not connect potential
transformer low-voltage secondaries to the control
through cables or other wiring until the unit is installed
in the field . Transformer high-voltage primary windings
will become live when 120/240V AC is applied to the
control from an alternate source if the transformer
secondary is connected . Failure to comply may result in
severe personal injury or death .
T371 .2
WARNING
Hazardous voltage . Before applying power to the
control, confirm that male pins of the input power
receptacle are electrically insulated to prevent
unintentional contact with 120/240V AC voltage .
Failure to do so may result in severe personal injury or
death .
T372 .1
See Figure 21 for single-phase incoming voltage supply for
120 VAC or 240 VAC.
Input power is required:
●
●
To power the control
●
●
To provide voltage and power metering
●
●
To power the thermostatically controlled heater
●
●
To charge the battery
Battery charger
The battery charger is enabled whenever the SPEAR single-
phase recloser control is connected to incoming line power.
otee:
N
An 8 A-hr lead acid battery will fully charge in 24
hours or less, at 25°C.
The charger includes a temperature-compensated design to
optimally charge the control battery.
Terminal blocks
One terminal block is used for connection to the SPEAR
single-phase recloser control. Input power and sensing
voltage terminal blocks will allow a maximum wire size of
#12 AWG. Factory default wiring includes pre-wiring of the
control receptacle, and the AC input receptacle. Customer
connection is required for connecting power to customer
supplied radio.
Terminal Block X1 provides power and sensing voltage to
the SPEAR single-phase recloser control modules. Terminal
Block X1 is used to connect sensing transformer voltage.
The wiring of the transformers should follow the application
Power connections
The transformer required for power should be a minimum of
0.5 kVA to power the recloser control.
External voltage sensing
The SPEAR Single-Phase Recloser Control only accepts one
voltage input. A source-side PT is required to power the
control, and is also used for single-phase voltage sensing.
The X1 terminal block can accept input voltage range of
15–265 VAC.
To avoid erroneous metering values, do not exceed the
input voltage range.
●
●
Follow the grounding requirements shown on the Voltage
Sensing wire diagram appropriate for your two-wire
●
●
Follow the grounding requirements shown on the Voltage
Sensing wire diagram appropriate for your three-wire
otee:
N
The SPEAR single-phase recloser control only
displays Line-to-Neutral voltages regardless of the
system connection.
Refer to
Service Information MN280012EN SPEAR
Microprocessor-Based Recloser Control Programming Guide
for additional information.
