Page 1
文管中心
發行章
正式文件，妥善保存
ST Series
Pure Sine Wave
Power Inverter
User ’s Manual
Page 2
文管中心
發行章
正式文件，妥善保存
Contents
1.
Important Safety Instructions…………………………………………………………………….
1-1 General safety precautions…………………………………………………………………… 2
1-2 Precautions when working with Batteries…………………………………………………… 2
2.
Functional Characteristics.……………………………………………………………………….
2-1 General Information…………………………………………………………………………. 3
2-2 Application……………………………………………………………………………………. 4
2-3 Features………………………………………………………………………………………. 5
2-4 Electrical Performance………………………………………………………………………. 6
2-5 Mechanical drawings………………………………………………………………………... 10
3.
Introduction.…………………………………………………………………………………………
3-1 Front Panel Operation………………………………………………………………………. 12
3-2 Protections Features………………………………………………………………………... 16
2
3
12
3-3 DC Wiring Connections.………….…………………………………………………………. 16
3-4 Hard-wire Installation….………….…………………………………………………………. 20
3-5 Rear panel Operation……………………………………………………………………….. 23
3-6 Installation……………………………………………………………………………………. 23
3-7 Inverter Operation…………………………………………………………………………… 24
4
Information…………………………………………………………………………………………..
4-1 Troubleshooting…………………….……………………………….…………………………. 25
4-2 Maintenance………………………………………………………..………………………….. 25
4-3 Warranty………………………………………………………………………………………... 26
5.
Appendices…………………………………………………………………………………………..
5-1 FCC (Class A) Declaration of Conformity………………………………………………… 27
5-2 e-mark (e13) Declaration of Conformity………………………………………………….. 29
25
27
5-3 EMC (Class A) Declaration of Conformity………………………………………............. 36
5-4 CE (LVD EN60950) Declaration of Conformity…………………………………………... 38
©Copyright: This manual is the copyright of COTEK Electronic Ind. Co., Ltd. And may not be
reproduced or copied without the express permission of the owner.
1
Page 3
文管中心
發行章
正式文件，妥善保存
1. Important Safety Instructions
WARNING!
Before using the Inverter, read and save the safety
instructions.
1-1. General Safety Precautions
1-1-1. Do not expose the Inverter to rain, snow, spray, bilge or dust.
To reduce risk of hazard, do not cover or obstruct the ventilation
openings. Do not install the Inverter in a zero-clearance
compartment. Overheating may result.
1-1-2. To avoid a risk of fire and electronic shock. Make sure that existing
wiring is in good electrical condition; and that wire size is not
undersized.
Do not operate the Inverter with damaged or substandard wiring.
1-1-3. This equipment contains components which can produce arcs or
sparks. To prevent fire or explosion do not install in compartments
containing batteries or flammable materials or in locations which
require ignition protected equipment. This includes any space
containing gasoline-powered machinery, fuel tanks, or joints, fittings,
or other connection between components of the fuel system.
1-2. Precautions When Working with Batteries
1-2-1. If battery acid contacts skin or clothing, wash immediately with soap
and water. If acid enters eye, immediately flood eye with running
cold water for at least 20 minutes and get medical attention
immediately.
1-2-2. Never smoke or allow a spark or flame in vicinity of battery or
engine.
1-2-3. Do not drop a metal tool on the battery. The resulting spark or
short-circuit on the battery of other electrical part may cause an
explosion.
1-2-4. Remove personal metal items such as rings, bracelets, necklaces,
and watches when working with a lead-acid battery.
A lead-acid battery produces a short-circuit current high enough to
weld a ring or the like to metal, causing a severe burn.
2
Page 4
A
文管中心
發行章
正式文件，妥善保存
2. Functional Characteristics
2-1. General Information
ST-series completes with stand –alone power inverter with AC transfer
switch and is suitable for RV, Marin and Emergency appliances.
Either mode is front panel programmable.
In the first option, Off-line mode,
the AC bypass mode in its normal operation. Upon AC input failure, output
power will be diverted through the DC to AC Inverter Mode. Once AC
mains are restored, the unit will revert from the Inverter Mode to the
Bypass Mode.
In the second option, On-line mode, AC output power will be provided
directly by the inverter from the DC source. Should the DC source or
inverter fail, the system will transfer its output power through the bypass
mode. Once the DC power source is restored, the system will revert to the
inverter mode.
C output power will be supplied through
This power inverter series is a member of the most advanced line of
mobile AC power systems available.
To get the most out of the power inverter, it must be installed and
used properly. Please read the instructions in this manual before
installation and operation this model.
WARNING!
The above two option are fixed during the production and
customer unable to modify.
3
Page 5
文管中心
發行章
正式文件，妥善保存
2-2. Application
2-2-1
Power tools–circular saws, drills, grinders, sanders, buffers, weed and
hedge trimmers, air compressors.
2-2-2.
Office equipment – computers, printers, monitors, facsimile machines,
scanners.
2-2-3.
Household items – vacuum cleaners, fans, fluorescent and incandescent
lights, shavers, sewing machines.
2-2-4.
2-2-5
2-2-6.
Kitchen appliances – coffee makers, blenders, ice markers, toasters.
Industrial equipment – metal halide lamp, high – pressure sodium lamp.
Home entertainment electronics – television, VCRs, video games,
stereos, musical instruments, satellite equipment.
4
Page 6
文管中心
發行章
正式文件，妥善保存
2-3. Features
■
Pure sine wave output (THD < 3%) to operate higher-end electronic
Equipments.
■
■
■
■
■
■
■
■
■
■ 3 LED indicators with tri-color display all operation status.
■ High efficiency 88 ~ 94%.
Output frequency：50 / 60Hz switch selectable
Built in 16A/25A or 30A rating transfer switch.
Speed up transfer time and synchronized operation with the AC source
at all times that allows the transfer to be interruption-free for sensitive
equipments.
Built in advance microprocessor to make friendly interface with user.
Low power “ Power Saving Mode “ to conserve energy
Capable of driving highly reactive & capacitive loads at start moment.
Hardwire AC connection model option.
Loading controlled cooling fan.
Smart remote controller.
■ Protection:
Input over voltage and Input low voltage protection.
Low battery alarm
Over temperature protection.
Over load protection
Short Circuit protection
Reverse polarity protection.
AC circuit breaker (6Amp to 30Amp)
5
Page 7
文管中心
發行章
正式文件，妥善保存
2-4. Electrical Performance
Specification Model No.
Continuous Output Power 1000W
Maximum Output Power (3Min.) 1150W
Item
Surge Rating 2000W
Input Voltage 12V 24V 48V 12V 24V 48V
ST1000-112 ST1000-124 ST1000-148 ST1000-212 ST1000-224 ST1000-248
Output Voltage
Frequency
(Switch Selectable)
Output Waveform Pure Sine Wave (THD < 3%)
Efficiency (full load) 88% 90% 92% 90% 93% 94%
No Load Current Draw 1.43A 0.75A 0.38A 1.25A 0.65A 0.35A
Stand-By Current Draw 0.25A 0.15A 0.09A 0.25A 0.15A 0.09A
Input Voltage Regulation
Input Level Indicator
Load Level Indicator
Failure Indicator Red LED
Protection
Circuit Breaker 30 Amp 6 Amp
Remote Control Unit CR6 / CR8 Optional
100 / 110 / 120V ± 5% 220 / 230 / 240V ± 3%
50 / 60Hz
10.5-15
VDC
Overload, Short Circuit, Reverse Polarity (Fuse), Over Temperature
21.0-30
VDC
Over/Under Input Voltage, AC Input Circuit Breaker
42.0-60
VDC
Red / Orange / Green LED
10.5-15
VDC
21.0-30
VDC
42.0-60
VDC
Synchronous AC transfer YES
Transfer s witch 30 Amp 16 Amp
Transfer Time Inverter to utility AC : 8 ~ 10msec. ; Utility AC to inverter : 16 ~ 50 msec
Safety Meet UL458 ------
EMI Conduction&Radiation Compliance to FCC Class A Compliance to EN55022 classA
EMS Immunity ------ Compliance to EN61000-3-2,3
EMC
LVD ------ Compliance to EN60950-1
e-MARK ------ Compliance to e-13*72/245/ECC,95/54 EC
Operating Temperature Range
Storage Temperature Range
Cooling Loading controlled cooling fan
Dimensions 373(L)*236(W)*115(H) mm / 14.7(L)*9.29(W)*4.53(H) Inch
Weight 6.2 kg / 13.6 Lbs.
0 – 40ɗ
-30ɗ to 70ɗ
Note: The specifications are subject to change without notice.
6
Page 8
文管中心
發行章
正式文件，妥善保存
2-4. Electrical Performance
Specification Model No.
Continuous Output Power 1500W
Maximum Output Power (3Min.) 1725W
Item
Surge Rating 3000W
Input Voltage 12V 24V 48V 12V 24V 48V
ST1500-112 ST1500-124 ST1500-148 ST1500-212 ST1500-224 ST1500-248
Output Voltage
Frequency
(Switch Selectable)
Output Waveform Pure Sine Wave (THD < 3%)
Efficiency (full load) 88% 91% 92% 92% 93% 94%
No Load Current Draw 1.45A 0.75A 0.40A 1.40A 0.70A 0.40A
Stand-By Current Draw 0.28A 0.15A 0.09A 0.28A 0.15A 0.09A
Input Voltage Regulation
Input Level Indicator
Load Level Indicator
Failure Indicator Red LED
Protection
Circuit Breaker 30 Amp 10 Amp
Remote Control Unit CR6 / CR8 Optional
100 / 110 / 120V ± 5% 220 / 230 / 240V ± 3%
50 / 60Hz
10.5-15
VDC
Overload, Short Circuit, Reverse Polarity (Fuse), Over Temperature
21.0-30
VDC
Over/Under Input Voltage, AC Input Circuit Breaker
42.0-60
VDC
Red / Orange / Green LED
10.5-15
VDC
21.0-30
VDC
42.0-60
VDC
Synchronous AC transfer YES
Transfer switch 30 Amp 10Amp
Transfer Time Inverter to utility AC : 8 ~ 10msec. ; Utility AC to inverter : 16 ~ 50 msec
Safety Meet UL458 ------
EMI Conduction&Radiation Compliance to FCC Class A Compliance to EN55022 classA
EMS Immunity ------ Compliance to EN61000-3-2,3
EMC
Operating Temperature Range
Storage Temperature Range
Dimensions 403(L)*236(W)*115(H) mm / 15.9(L)*9.29(W)*4.53(H) Inch
LVD ------ Compliance to EN60950-1
e-MARK ------ Compliance to e-13*72/245/ECC,95/54 EC
Cooling Loading controlled cooling fan
Weight 7.0 kg / 15.4 Lbs.
0 - 40ɗ
-30ɗ to 70ɗ
Note: The specifications are subject to change without notice.
7
Page 9
文管中心
發行章
正式文件，妥善保存
2-4. Electrical Performance
Specification Model No.
Continuous Output Power 2000W
Maximum Output Power (3Min.) 2300W
Item
Surge Rating 4000W
Input Voltage 12V 24V 48V 12V 24V 48V
ST2000-112 ST2000-124 ST2000-148 ST2000-212 ST2000-224 ST2000-248
Output Voltage
Frequency
(Switch Selectable)
Output Waveform Pure Sine Wave (THD < 3%)
Efficiency (full load) 88% 91% 92% 90% 93% 94%
No Load Current Draw 2.6A 1.50A 0.70A 2.3A 1.1A 0.65A
Stand-By Current Draw 0.60A 0.30A 0.2A 0.60A 0.3A 0.15A
Input Voltage Regulation
Input Level Indicator
Load Level Indicator
Failure Indicator Red LED
Protection
Circuit Breaker 30Amp
Remote Control Unit CR6 / CR8 Optional
100 / 110 / 120V ± 5% 220 / 230 / 240V ± 3%
50 / 60Hz
10.5-15
VDC
Overload, Short Circuit, Reverse Polarity (Fuse), Over Temperature
21.0-30
VDC
Over/Under Input Voltage, AC Input Circuit Breaker
42.0-60
VDC
Red / Orange / Green LED
10.5-15
VDC
21.0-30
VDC
42.0-60
VDC
Synchronous AC transfer YES
Transfer switch 30Amp 25 Amp
Transfer Time Inverter to utility AC : 8 ~ 10msec. ; Utility AC to inverter : 16 ~ 50 msec
Safety Meet UL458 ------
EMI Conduction&Radiation Compliance to FCC Class A Compliance to EN55022 classA
EMS Immunity ------ Compliance to EN61000-3-2,3
EMC
Operating Temperature Range
Storage Temperature Range
Dimensions 433(L)*332(W)*115(H) mm / 17(L)*13(W)*4.53(H) Inch
LVD ------ Compliance to EN60950-1
e-MARK ------ Compliance to e-13*72/245/ECC,95/54 EC
Cooling Loading controlled cooling fan
Weight 11.2 kg / 24.6 Lbs.
0 - 40ɗ
-30ɗ to 70ɗ
Note: The specifications are subject to change without notice.
8
Page 10
文管中心
發行章
正式文件，妥善保存
2-4. Electrical Performance
Specification Model No.
Continuous Output Power 2500W
Maximum Output Power (3Min.) 2875W
Item
Surge Rating 5000W
Input Voltage 12V 24V 48V 12V 24V 48V
ST2500-112 ST2500-124 ST2500-148 ST2500-212 ST2500-224 ST2500-248
Output Voltage
Frequency
(Switch Selectable)
Output Waveform Pure Sine Wave (THD < 3%)
Efficiency (full load) 88% 91% 92% 90% 93% 94%
No Load Current Draw 2.62A 1.53A 0.72A 2.32A 1.15A 0.68A
Stand-By Current Draw 0.60A 0.30A 0.2A 0.60A 0.3A 0.15A
Input Voltage Regulation
Input Level Indicator
Load Level Indicator
Failure Indicator Red LED
Protection
Circuit Breaker 30 Amp
Remote Control Unit CR6 / CR8 Optional
100 / 110 / 120V ± 5% 220 / 230 / 240V ± 3%
50 / 60Hz
10.5-15
VDC
Overload, Short Circuit, Reverse Polarity (Fuse), Over Temperature
21.0-30
VDC
Over/Under Input Voltage, AC Input Circuit Breaker
42.0-60
VDC
Red / Orange / Green LED
10.5-15
VDC
21.0-30
VDC
42.0-60
VDC
Synchronous AC transfer YES
Transfer switch 30Amp 25 Amp
Transfer Time Inverter to utility AC : 8 ~ 10msec. ; Utility AC to inverter : 16 ~ 50 msec
Safety Meet UL458 ------
EMI Conduction&Radiation Compliance to FCC Class A Compliance to EN55022 classA
EMS Immunity ------ Compliance to EN61000-3-2,3
EMC
Operating Temperature Range
Storage Temperature Range
Dimensions 463(L)*332(W)*115(H) mm / 18.2(L)*13(W)*4.53(H) Inch
LVD ------ Compliance to EN60950-1
e-MARK ------ Compliance to e-13*72/245/ECC,95/54 EC
Cooling Loading controlled cooling fan
Weight 12 kg / 26.4 Lbs.
0 - 40ɗ
-30ɗ to 70ɗ
Note: The specifications are subject to change without notice.
9
Page 11
文管中心
發行章
正式文件，妥善保存
2-5. Mechanical drawings
DC INPUT
POS(+)NEG(-)
REVERSE POLARITY
WILL DAMAGE UNIT
AC INPUT
BREAKER
GND
ENB
ENB
SSSS
1234
0
1
POWER
INPUT
LEVEL
LOAD
LEVEL
STATUS
PWR.
FREQ.
SAV.
REMOTE
PORT
POWER
ON-OFF-REMOTE
10
Page 12
文管中心
發行章
正式文件，妥善保存
2-5. Mechanical drawings
DC INPUT
NEG(-)
WARNING:
REVERSE POLARITY WILL DAMAGE UNIT
POS(+)NEG(-)
POS(+)
AC INPUT
BREAKER
GND
ENB
ENB
SSSS
1234
0
1
POWER
INPUT
LEVEL
LOAD
LEVEL
STATUS
FREQ.
PWR.
SAV.
REMOTE
PORT
POWER
ON-OFF-REMOTE
11
Page 13
文管中心
發行章
正式文件，妥善保存
3. Introduction
3-1. Front Panel Operation
DC INPUT
Front view
AC INPUT
BREAKER
0
1
SSSS
1234
PWR.
SAV.
INPUT
LEVEL
POWER
LOAD
LEVEL
STATUS
FREQ.
REMOTE
PORT
GND
ENB
ENB
POWER
ON-OFF-REMOTE
NEG(-)
POS(+)
REVERSE POLARITY
WILL DAMAGE UNIT
DC INPUT
POS(+)NEG(-)
NEG(-)
WARNING:
REVERSE POLARITY WILL DAMAGE UNIT
POS(+)
ST-1000/ST-1500
AC INPUT
BREAKER
SSSS
1234
0
1
SAV.
PWR.
GND
ENB
ENB
POWER
INPUT
POWER
LEVEL
LOAD
LEVEL
STATUS
FREQ.
REMOTE
PORT
ON-OFF-REMOTE
3-1-1. Power ON / OFF / REMOTE (Main) switch:
a. Before installing the inverter, you need to ensure the main switch
is in the OFF position.
b. Before using the remote unit, you need to ensure the main switch
is in the REMOTE position.
3-1-2. AC input Circuit Breaker:
The AC input circuit breaker protects the model from overload.
When an overload condition exists, the circuit breaker stops to supply
output AC grid power. To reset it, push the circuit breaker switch
then the model will be back in normal operation. The source fault
should be corrected before you reset it.
ST-2000/ST-2500
12
Page 14
文管中心
發行章
正式文件，妥善保存
3-1-3 Green terminal
1) Before installing the inverter, you need to ensure the main switch must
be ”OFF”.
2) Before using the remote control terminal, you need to ensure the main
switch muse be “REMOTE”.
3) Ensure the remote contacts off.
4) Use 20 ~ 24 #AWG wire to connect the remote control terminal.
5) Remote control ON/OFF inverter setup status:
ENB
GND
ENB
ON:INV. ON
OFF:INV. OFF
HI:INV. ON
TR
LOW:INV. OFF
GND
(TR ON)
(TR OFF)
ON:INV. ON
BAT+
OFF:INV. OFF
BAT-
ON:INV. ON
ENB
ENB
NOTE: At the same time, only can use one model to control the inverter.
3-1-4. Remote Port:
OFF:INV. OFF
GND
The maximum level is the same as input DC voltage.
+
DC
POWER
-
The ST Series Inverter is compatible with any of these remote
controllers: CR-6 or CR-8.
3-1-5. Input Level：Display Input Voltages
LED Status DC 12V DC 24V DC 48V
RED Blink (slow) 10.3~10.6 20.5~21.2 40.8~42.4
RED 10.6~11.0 21.2~21.8 42.4~43.5
ORANGE 11.0~12.1 21.8~24.1 43.5~48.1
GREEN 12.1~14.2 24.1~28.6 48.1~56.3
ORANGE Blink 14.2~15.0 28.6~30.0 56.3~59.6
OVER RED BLINK 15.0q 30.0q 59.6q
13
Page 15
文管中心
發行章
正式文件，妥善保存
3-1-6. Load Level：Display AC Loads (Watts)
LED Status DARK GREEN ORANGE RED
BLINKING
RED
ST1000
ST1500
ST2000
ST2500
0 ~ 80W 80 ~ 330W 330 ~ 750W 750 ~ 960W Over 960W
0 ~ 120W 120 ~ 495W 495 ~ 1125W 1125 ~ 1450W Over 1450W
0 ~ 160W 160 ~ 660W 660 ~ 1500W 1500 ~ 1920W Over 1920W
0 ~ 200W 200 ~ 825W 825 ~ 1875W 1875 ~ 2390W Over 2390W
3-1-7. Power Status：Display Power & Fault Status
Orange LED LED Signal Status
Solid Power OK
Slow Blink Power Saving
Red LED LED Signal Status
Fast Blink OVP
Slow Blink UVP
Intermittent Blink
Solid OLP
Green LED LED Signal Status
Solid AC GRID INPUT OK
3-1-8. AC Frequency：Selected by “S4” Dip Switch
Frequency S4
50 HZ OFF
60 HZ ON
3-1-9. Power Saving Mode: Power Saving Mode is adjustable and
set by the Dip Switches, S1, S2 and S3 on the front panel.
OTP
Example: The load should be set above15W. If the load is below15W,
the power saving mode will be activated.
14
Page 16
文管中心
發行章
正式文件，妥善保存
ST1000
ST1500
ST2000
ST2500
S1 S2 S3
DISABLE DISABLE OFF OFF OFF
20W 40W ON OFF OFF
40W 80W OFF ON OFF
55W 125W ON ON OFF
75W 170W OFF OFF ON
95W 210W ON OFF ON
115W 245W OFF ON ON
135W 280W ON ON ON
3-1-10. DC Input Terminals:
Connect DC input terminals to 12V / 24V / 48V battery or other
power sources.
[ + ] represents positive, [ - ] represents negative. Reverse polarity
connection can blow the internal fuse and may damage the inverter
permanently.
Model
Minimum Maximum
DC Input Voltage
12V 10.5V 15.0V
24V 21.0V 30.0V
48V 42.0V 60.0V
3-1-11. Chassis Ground: Connect the wire # 8 AWG to vehicle chassis.
WARNING!
Operating the inverter without a proper ground
connection may cause electrical safety hazard.
15
Page 17
文管中心
發行章
正式文件，妥善保存
3-2. Protections Features
Model
Over Voltage Under
DC Input (VDC) Over Temperature Protection
Under Voltage INTERIOR HEAT SINK
Shutdown
Restart Shut-
Voltage
Alarm
down
Restart Shut-
down
Restart Shut-
down
12V 15.3 14.3 11.0 10.2 12.7
24V 30.6 28.6 22.0 20.3 25.2
70℃ 45℃ 90℃ 60℃
48V 61.2 57.2 44.0 40.8 49.7
3-3 DC Wiring Connections
Follow the instructions to connect the battery cables to DC input terminals of
the Inverter. The cable should be as short as possible (less than 6 feet / 1.8
meters ideally) so that it can handle the required current in accordance with
the electrical codes or regulations application. Inappropriate length of cables
will deteriorate the inverter performance such as poor surge capability,
frequent low-input voltage warnings, and shutdown. UVP warning occurs
when DC voltage drops across the cables from the inverter to the batteries.
The longer or narrower the cables, the more the voltage drop.
Increasing your DC cable size will help improve the situation.
The following recommended cables are for the best performance of the
inverter. (Apply both 120V and 230V versions)
Restart
Model No Wire AWG Inline Fuse
ST1000-112 / 212 # 2 150 A
ST1000-124 / 224 # 4 80 A
ST1000-148 / 248 # 6 40 A
ST1500-112 / 212 # 2 200 A
ST1500-124 / 224 # 4 100 A
ST1500-148 / 248 # 6 50 A
ST2000-112 / 212 # 2/0 250 A
ST2000-124 / 224 # 1/0 125 A
ST2000-148 / 248 # 2 70A
ST2500-112 / 212 # 4/0 400 A
ST2500-124 / 224 # 2/0 200 A
ST2500-148 / 248 # 1/0 100 A
16
Page 18
文管中心
發行章
正式文件，妥善保存
3-3-1. Connect the cables to the power input terminals on the front panel of the
inverter. The red terminal is positive (+) and black terminal is negative (-).
Insert the cables into the terminals and tighten screw to clamp the wires
securely.
WARNING!
Make sure all the DC connections are tight (torque
to 9 – 10 ft-lbs, 11.7 – 13 Nm). Loose connections
could result overheat in a potential hazard.
WARNING!
The installation of a fuse must be on positive cable.
Failure to place a fuse on “+” cables running between
the inverter and battery may cause damage to the
inverter and will void warranty.
Also, only use high quality copper wire and keep the cable length short
which is a maximum of 3 - 6 feet.
Battery to inverter cable connection
AWG#2 - #6
Do not place anything between
battery cable lug and terminal surface.
Assemble exactly as shown.
17
Page 19
文管中心
發行章
正式文件，妥善保存
ST-1000
ST-1500
N
E
G
(
-
)
P
O
S
(
+
)
INL INE FU SE
WASHER
SPRING WASHER
M8 NUT
RING TERMINAL
PLASTIC COVER
RING TERMINAL
WASHER
SPRING WASHER
M8 NUT
PVC WIREġ
Do not place anything between
battery cable lug and terminal surface.
Assemble exactly as shown.
18
Page 20
文管中心
發行章
正式文件，妥善保存
ST2000
ST2500
INLINE FUSE
AC INPUT
WARNING: REVERSE POLARITY WILL DAMAGE UNIT
DC INPUT
POS(+) NEG(-)
BREAKER
POWER
POWER
STATUS
0
INPUT
LEVEL
1
S1S2S3S
4
I
0
LOAD
LEVEL
REMOTE
PORT
ON-OFF-REM O T E
19
Page 21
文管中心
發行章
正式文件，妥善保存
3-4 Hard-wire Installation
AC wiring connections:
3-4-1. The AC wiring compartment is located on the front panel of the
CAUTION !
It is advised that all the electrical installation should conform to the local
ST series. Remove the AC wiring compartment cover to gain
access to the AC terminal.
WARNING!
Before you connect AC wiring to the terminals of compartment
cover, ensure to check the label in the compartment for
correct connections. Wrong connection will damage the
inverter.
electrical codes and should be carried out by a certified electrician.
When the unit is feeding the internally inverted voltage (Power Status LED is
green, power from the AC input source is not available), the current carrying
conductors connected to the “L” and “N” terminals of the AC output will be
isolated from the metal chassis of the inverter. Hence, during this condition,
when the metal chassis of the inverter is connected to the earth ground, the
“N” terminal of the AC output will not be grounded (bonded) to the earth
ground. Under this condition, the “N” terminal of the AC output will not be a
Neutral in the true sense. Do not touch this terminal as it will be at an
elevated voltage(almost half the value the AC output voltage) with respect to
the metal chassis / earth ground and may produce an electrical shock when
touched!
When the unit is transferring power from the AC input source (Power Source
LED is orange), the grounding condition of the “N” terminal of the AC output
will be the same as the condition of the “N” terminal of the AC input source. If
the AC input source is the power supplied from the utility, the “N” terminal
would be a Neutral in the true sense, will normally be bonded to the earth
ground and will read almost 0 V with respect to the earth ground. In this case,
touching this terminal will not be a shock hazard.
20
Page 22
文管中心
發行章
正式文件，妥善保存
3-4-2. Connect AC output and AC input wiring to the ST series terminals.
Please take the following information as your reference.
OUTPUT
AC INPUT
3-4-3. Please double check and review all connections to ensure
Terminal Wire color
AC
Ground
Line (L) Black
Neutral (N) White
Line (L) Brown
Neutral (N) Blue
Green / Yellow
or Bare
copper
ST1000&ST1500 ST2000&ST2500
Within 16 feet / AWG#
26~32 feet / AWG#
Wire length / gauge
Within 16 feet / AWG#
14~16
12~14
10 ~12
26~32 feet / AWG#
8 ~10
the wires are in correct terminals and the connections are tight.
3-4-4.
Before connecting AC output and AC input terminals of the ST series,
you can either use front compartment cover or a side hole to coil out.
Both AC input and AC output are coiled out from the front compartment
cover when in production. If you want to change the position, you
should open the top cover first, and then switch the wire of the front
compartment cover and the plastic cover of the side of top cover.
21
Page 23
文管中心
發行章
正式文件，妥善保存
WARNING !
If the connection distribution of the frond panel is not
feasible for your appliances, ST series also provides
another distribution on the side panel, to utilize it please
be ensured to remove the plastic covers before installing
the strain relief; moreover, replace the empty hole of front
panel with removed plastic covers for safety purpose.
ST1000
ST1500
DC INPUT
POS(+)NEG(-)
REVERSE POLARITY
WILL DAMAGE UNIT
AC INPUT
BREAKER
0
1
SSSS
1234
SAV.
GND
ENB
ENB
POWER
INPUT
LEVEL
POWER
LOAD
LEVEL
STATUS
FREQ.
PWR.
REMOTE
PORT
I
ON-OFF-REMOTE
0
NEG(-)
DC INPUT
POS(+)
ST2000
ST2500
AC INPUT
BREAKER
GND
ENB
ENB
SSSS
4321
0
1
FREQ.
PWR.
SAV.
INPUT
LEVEL
LOAD
LEVEL
POWER
STATUS
REMOTE
PORT
POWER
I
ON-OFF-REMOTE
0
WARNING:
REVERSE POLARITY WILL DAMAGE UNIT
POS(+)NEG(-)
22
Page 24
文管中心
發行章
正式文件，妥善保存
3-5. Rear Panel Operation
ST-1000/ST-1500
Rear view
3-5-1. Fan Ventilation:
ST-2000/ST-2500
Be sure to keep it a distance (at least 1 inch) form surrounding things.
3-6. Installation
The power inverter should be installed in a location that meets the following
requirements:
3-6-1. Dry – Do not allow water to drip or splash on the inverter.
3-6-2.
Cool – Ambient air temperature should be between 0℃ and 40℃,
the cooler the better.
3-6-3. Safety – Do not install batteries in compartment or other areas
3-6-4. Ventilated – Allow at least one inch of clearance around the
where flammable fumes existence such as fuel storage areas or
engine compartments.
Inverter for air flow. Ensure the ventilation shafts on the rear
and bottom of the unit are not obstructed.
23
Page 25
文管中心
發行章
正式文件，妥善保存
3-6-5. Dust-free – Do not install the Inverter in a dusty environments
where dust, wood particles or other filings/shavings are present. The
dust can be pulled into the unit when the cooling fan is operation.
3-6-6. Close to batteries – Avoid excessive cable lengths but do not install
the inverter in the same compartment as batteries.
Use the recommended wire lengths and sizes (see section 4-3).
Do not mount the inverter at the place where it is exposed to the
gases produced by the battery.
These gases are very corrosive and prolonged exposure will
damage the inverter.
WARNING!
Shock Hazard. Before proceeding further, carefully
check that the inverter is NOT connected to any
batteries, and that all wiring is disconnected from any
electrical sources . Do not connect the output terminals
of the inverter to an incoming AC source.
3-7. Inverter Operation
Switch the power ON, then the power inverter is ready to supply AC power to
the loads. Turn on the loads separately after the inverter is ON to prevent
OVP status caused by the surge power.
3-7-1. Switch the power ON, then the buzzer will send out beep sound. At the
moment, the inverter is doing self-diagnosis. Then the LED’s indicators
will also show various colors.
Finally, the buzzer will send out another beep, and the Input Level and
Status LED indicators will turn green. Then the inverter will start to work.
3-7-2. Switch the power OFF, then the inverter stops and all the lights that are
On will go Off.
3-7-3. Switch the power inverter and the test load ON, then the inverter will
supply the power to the load. If you want to measure true RMS voltage
output of the inverter, a meter such as FLUKE 45 BECKMAN 4410 or
TRIPLETT 4200 must be used.
24
Page 26
文管中心
發行章
正式文件，妥善保存
4. Information
4-1. Troubleshooting
WARNING
Do not open or disassemble the ST series Inverter.
Attempting to service the unit may cause the risk of
electrical shock or fire.
Problems and
Symptoms Possible Cause Solutions
No AC Power “Output”
STATUS illuminates the LED
a. Power status light is
blinking fast.
b. Power status light is
Blinking slowly.
c. Power status light is
blinking Intermittently.
d. Power status light is
glowed steadily.
Over input voltage.
(OVP)
Low input voltage.
(UVP)
Thermal shutdown.
(OTP)
Check input voltage
Reduce input voltage.
Recharge battery.
Check connections
and cables.
Improve ventilation.
Make sure ventilation,
shafts of the inverter
are not obstructed.
Lower ambient
temperature.
Short circuit.
Wiring error.
Over Loading (OLP)
Check AC wiring
for short circuit.
Reduce load.
4-2. Maintenance
Very little maintenance is required to keep your inverter operating properly.
You should clean the exterior of the unit periodically with a damp cloth to prevent accumulation of dust and dirt. At the same time, tighten the screws on the
DC input terminals.
25
Loading...