Cotek S Series User manual

PURE SINE WAVE
POWER INVERTER
S Series User’s Manual
S150/300/500

Table of Contents
1. Safety Instructions ....................................................... 1
1-1. General Safety Precautions............................................ 1
1-2. Precautions When Working with Batteries ...................... 1
2. Functional Characteristics Introduction .................... 2
2-1. Features......................................................................... 2
2-2. Mechanical Drawing....................................................... 2
2-3. S150 Specification ......................................................... 3
2-4. S300 Specification ......................................................... 4
2-5. S500 Specification ......................................................... 5
3. Instructions................................................................... 6
3-1. Front Panel Introduction ................................................. 6
3-2. Rear Panel Introduction.................................................. 8
3-3. AC Safety Grounding ..................................................... 9
3-4. Making DC Wiring Connections...................................... 9
3-5. Installation.....................................................................10
4. Troubleshooting ......................................................... 11
5. Maintenance ............................................................... 12
6. Warranty...................................................................... 12

1
1. Safety Instructions
WARNING!
Before installing and using the inverter, please read the
following safety information carefully.
1-1. General Safety Precautions
1-1-1. Do not expose the inverter to water, mist, snow, or dust. To
reduce the risk of hazard, do not cover or obstruct the
ventilation shaft.
To avoid overheating, do not install the inverter in a
zero-clearance compartment.
1-1-2. To avoid the risk of fire and electronic shock, make sure that
existing wiring is in good electrical condition and not undersized.
Do not operate the inverter with damaged or substandard
wiring.
1-1-3. There are some components in the inverter that can cause arcs
and sparks.
To prevent from fire or explosion, do not put batteries,
flammable materials, or anything that should be
ignition–protected around the inverter.
1-2. Precautions When Working with Batteries
1-2-1. If battery acid contacts your skin or clothing, you need to wash it
out immediately with soap and water. If acid enters into your
eyes, immediately flush your eyes with running cold water for at
least 20 minutes and get medical attention immediately.
1-2-2. Never smoke or make a spark or flame in the vicinity of batteries
or engines.
1-2-3. Do not drop metal tools on the battery. The resulting spark or
short-circuit on the battery or other electrical parts 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 may produce a short-circuit current whose
temperature is high enough to weld these metal items and cause
a severe burn.

2
2. Functional Characteristics Introduction
2-1. Features
zLow Frequency transformer design is capable of driving high reactive
and capacitive loads
zPower ON / OFF remote control (Green Terminal)
zInput & output fully isolation
zThermal control fan
zInput protection烉Reverse Polarity (Fuse) / Under Voltage / Over
Voltage
zOutput protection烉Short Circuit / Overload / Over Temperature
2-2. Mechanical Drawing
S150/300drawing S500drawing
Model
A (mm)
B (mm)
C (mm)
D (mm)
E (mm)
S150
188
41.5
105.0
132
73
S300
215
41.5
132.0
154
73
S500
314
42.5
196.0
192
89

3
2-3. S150 Specification
Specification
Model No.
Item
S150-112
S150-124
S150-212
S150-224
AC Voltage
100 / 110 / 120 VAC ± 5%
220 / 230 / 240 VAC ± 3%
Rated Power
150W
Surge Power
200W
Waveform
Pure Sine Wave (THD < 6.0%)
Frequency
50 / 60Hz ± 0.5%
Power Factor Allowed
cosθ-90° ~ cosθ+90°
Standard Receptacles
GFCI / NEMA
Schuko / Australia / UK /
Universal / IEC
No Load Current Draw
0.20A
0.16A
0.22A
0.16A
DC Voltage
12V
24V
12V
24V
Input Voltage Range
10.5~15.0
VDC
21.0~30.0
VDC
10.5~15.0
VDC
21.0~30.0
VDC
Efficiency (Typ.)
87%
88%
87%
88%
Protection
Overload, Short Circuit, Reverse Polarity (Fuse),
Over / Under Input Voltage, Over Temperature.
Remote Control
Yes, On/Off controlled by external switch
Working Temperature
0 ~ 40 ɗ
Storage Temp. &
Humidity
-30 ~ 70ɗ, 10~95% RH
Safety Standards
Certified UL 458
(Only for “GFCI”receptacles)
Certified EN 60950-1
Isolation Resistance
I/P –O/P: 100M Ohms / 500VDC
EMI Conduction &
Radiation Certified FCC class B
Certified EN 55022;
EN 61000-3-2, -3-3, -6-3;
EN 61204-3
EMS Immunity ----
Certified EN 61204-3;
EN 61000-6-1;
EN55024; ENV50204;
IEC 61000-4-2, 3, 4, 5, 6, 8, 11
E-mark
----
Certified CISPR25
ISO 11452-2; ISO 7637-2
Fan Cooling
Thermostatically controlled
Dimensions (WxHxD)
132x73x188 mm / 5.20x2.87x7.40 inch
Weight
2.84kg
NOTE烉The specifications are subject to change without notice.

4
2-4. S300 Specification
Specification
Model No.
Item
S300-112
S300-124
S300-212
S300-224
AC Voltage
100 / 110 / 120 VAC ± 5%
220 / 230 / 240 VAC ± 3%
Rated Power
300W
Surge Power
400W
Waveform
Pure Sine Wave (THD < 6.0%)
Frequency
50 / 60Hz ± 0.5%
Power Factor Allowed
cosθ-90° ~ cosθ+90°
Standard Receptacles
GFCI / NEMA
Schuko / Australia / UK /
Universal / IEC
No Load Current Draw
0.24A
0.28A
0.26A
0.28A
DC Voltage
12V
24V
12V
24V
Input Voltage Range
10.5~15.0
VDC
21.0~30.0
VDC
10.5~15.0
VDC
21.0~30.0
VDC
Efficiency (Typ.)
89%
89%
89%
89%
Protection
Overload, Short Circuit, Reverse Polarity (Fuse),
Over / Under Input Voltage, Over Temperature.
Remote Control
Yes, On/Off controlled by external switch
Working Temperature
0 ~ 40 ɗ
Storage Temp. &
Humidity
-30 ~ 70ɗ, 10~95% RH
Safety Standards
Certified UL 458
(Only for “GFCI”receptacles)
Certified EN 60950-1
Isolation Resistance
I/P –O/P: 100M Ohms / 500VDC
EMI Conduction &
Radiation Certified FCC class B
Certified EN 55022;
EN 61000-3-2, -3-3, -6-3;
EN 61204-3
EMS Immunity ----
Certified EN 61204-3;
EN 61000-6-1;
EN55024; ENV50204;
IEC 61000-4-2, 3, 4, 5, 6, 8, 11
E-mark ----
Certified CISPR25
ISO 11452-2; ISO 7637-2
Fan Cooling
Thermostatically controlled
Dimensions (WxHxD)
154x73x215 mm / 6.06x2.87x8.46 inch
Weight
4.06kg
NOTE烉The specifications are subject to change without notice.

5
2-5. S500 Specification
Specification
Model No.
Item
S500-112
S500-124
S500-212
S500-224
AC Voltage
100/110/115/120 VAC ± 5%
200/220/230/240 VAC ± 3%
Rated Power
500W
Surge Power
500W~625W(1min) , 625~750W(10s)
Waveform
Pure Sine Wave (THD < 3.0%)
Frequency
50 / 60Hz ± 0.5%
Power Factor Allowed
cosθ-90° ~ cosθ+90°
Standard Receptacles
GFCI / NEMA
Schuko / Australia / UK /
Universal
No Load Current Draw
0.5A
0.4A
0.7A
0.4A
DC Voltage
12V
24V
12V
24V
Input Voltage Range
10.5~16.0
VDC
21.0~32.0
VDC
10.5~16.0
VDC
21.0~32.0
VDC
Efficiency (Typ.)
89%
89%
89%
89%
Protection
Overload, Short Circuit, Reverse Polarity (Fuse),
Over / Under Input Voltage, Over Temperature.
Remote Control
Yes, On/Off controlled by external switch
Working Temperature
-20 ~ 40 ɗ
Storage Temp. &
Humidity
-30 ~ 70ɗ, 10~95% RH
Safety Standards
Certified UL 458
(Only for “GFCI”receptacles)
Certified EN 60950-1
Isolation Resistance
I/P –O/P: 100M Ohms / 500VDC
EMI Conduction &
Radiation Certified FCC class B
Certified EN 55022;
EN 61000-3-2, -3-3, -6-3;
EN 61204-3
EMS Immunity ----
Certified EN 61204-3;
EN 61000-6-1;
EN55024; ENV50204;
IEC 61000-4-2, 3, 4, 5, 6, 8, 11
E-Mark ----
Certified CISPR 25
ISO 11452-2; ISO 7637-2
Fan Cooling
Thermostatically controlled
Dimensions (WxHxD)
192x90x314 mm / 7.56x3.54x12.36 inch
Weight
6.00kg
NOTE烉The specifications are subject to change without notice.

6
3. Instructions
S150, S300 and S500 series are very reliable, portable, and fully protected.
These pure sine inverters are used in a wide range of applications such as
vehicles, office equipment, home entertainment, electronic appliances, etc.
To have the most effective power inverter performance, it must be installed
and used properly. Please read the instructions of this manual before you
install and operate this model.
3-1. Front Panel Introduction
S150/300 Front Panel S500 Front Panel
Model
S150 / S300 / S500
˕A
AC output socket
˕B
Main switch
˕C
Remote port
˕D
Power status LED
3-1-1. AC output (Outlet Sockets available) ˕A烉

7
3-1-2. Main switch˕Band remote port˕C烉
The 3-stage switch is for turning the unit ON/OFF or putting in to the
remote mode.
3-1-1-1. Before installing the inverter, make sure the main switch
is set to "OFF ".
3-1-1-2. Before using the remote unit, make sure the main switch
is set to "REMOTE ".
3-1-1-3. Ensure the remote control contact is off.
3-1-1-4. Remote Port烉Place 0.75mm2and Screw type cable
between the remote port and the panel.
3-1-1-5. To turn ON / OFF inverter via remote switch.
REMOTE PORT
MODE I
MODE II
3-1-3. Power Status LED ˕D烉
LED Status
Description
Solid Green
AC Power OK
Fast Red Blink
OVP

8
LED Status
Description
Slow Red
Blink
UVP
Intermittently
Red Blink
OTP
Solid Red
OLP
3-2. Rear Panel Introduction
S150/300 Rear Panel S500 Rear Panel
Model
S150 / S300 / S500
M
DC input terminal
N
Ventilation mesh
O
Chassis ground
3-2-1. Input terminals烉
Connect the input terminal to 12v / 24V battery or other 12V /
24V power source.˰為˱represents positive, and˰炼˱represents
negative. Reverse polarity connection will blow the internal fuse
and may damage inverter permanently.
3-2-2. Ventilation mesh烉
Maintain at least a 3-inch distance from anything surrounding it.
3-2-3. Use wire # 8 AWG to connect Chassis ground with Vehicle
Chassis.
WARNING!
Do not combine the 12V model with 24V battery or the unit will
be destroyed immediately.
Operating with the inverter without a proper ground
connection may cause an electrical safety hazard.
Damage caused by reversed polarity is not covered by the
warranty. Ensure the power switch is in the OFF position
before putting the battery in.
3
-
2
.
Re
ar
Panel
Introduction

9
3-3. AC Safety Grounding
Neutral Grounding (GFCI’S)烉
110V models烉The neutral conductor of the AC output circuit of the
Inverter is automatically connected to the safety ground during inverter
operation. This conforms to National Electrical Code requirements that
separately derived from AC sources (such as inverters and generators)
which have their neutral conductors tied to ground in the same way as
the neutral conductors from the utility tied to ground at the AC breaker
panel. For models configured with a transfer relay, while AC utility
power is present and the Inverter is in bypass mode, this connection
(the neutral of the Inverter’s AC output to input safety ground) is not
present so that the utility neutral is only connected to ground at your
breaker panel, as required. COTEK has tested the following
GFCI-properly when connected to the output of the Inverter.
WARNING!
Never connect the inverter’s output to the AC distribution grid,
such as the household AC wall outlet.
It will damage the Inverter.
220V models
烉
There is no connection made inside the inverter from
either the line or neutral conductor to safety ground.
3-4. Making DC Wiring Connections
The DC cables should be as short as possible (less than 6 feet / 1.8
meters ideally)
The size of the cable should be thick enough to limit the voltage drop to
less than 2% when carrying the maximum input current to prevent
frequent low-input voltage warnings, and shutdown.
The following sizes of cables and fuses are recommended for up to 6 ft.
distance between the batteries and the inverter.
WARNING!
The fuse must be installed 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.

10
Increasing S500 DC cable size helps improve the situation.
COTEK recommends the following cables for optimum inverter
performance. (Apply both 110V and 220V versions)
Model
Wire AWG
Inline fuse
S500-112
# 8
ʁ125A
S500-124
# 10
ʁ80A
S500-212
# 8
ʁ125A
S500-224
# 10
ʁ80A
NOTE
烉
Batteries are capable of providing very large currents in case of
short circuit. The fuse should be as close to the positive battery
terminal as possible. Use Bussmann ANN series fuses (will also
require Fuse Block 4164) or equivalent.
3-5. Installation
Before connecting your applications to the inverter, always check the
power draw of your appliances. The inverter can supply surge power for
a short time so as to start up electrical equipment such as motors and
pumps which need more power while starting up.
When all the above requirements are satisfied and all connections are
made, it’s time to turn on the inverter by switching the power to ‘ I ’
position. The sine wave filters provide sine wave output voltage when
driven from the AC outlet.
To save the battery power, you are highly recommended to turn off the
inverter when it is not being used.
DC input voltage status as follows
烉
Model
DC Input Over
Voltage
DC Input Under
Voltage
Shut-down
Restart
Shut-down
Restart
S150/S300 12V
models
15.3VDC
14.8VDC
10.5VDC
12.5VDC
S150/S300 24V
models
30.6VDC
29.6VDC
21.0VDC
25.0VDC
S500 12V models
16.0VDC
14.5VDC
10.5VDC
12.5VDC
S500 24V models
32.0VDC
29.0VDC
21.0VDC
25.0VDC

11
3-6. DC Input (Outlet sockets available)
4. Troubleshooting
WARNING!
Do not open or disassemble the inverter. Attempting to
service the unit yourself may cause the risk of electrical
shock or fire.
Problems and Symptoms
Possible Cause
Solutions
No output voltage, the LED glows Red.
a. Power status light is blinking
red fast.
Over input voltage.
Check input voltage.
Discharge the battery.
b. Power status light is blinking
red slowly.
Low input voltage.
Charge the battery.
Check connections and
cable.
c. Power status light is blinking
red intermittently.
Thermal shutdown
Improve ventilation.
Make sure ventilation
openings in the inverter
are not obstructed.
Lower ambient
temperature.
d. Power status light is blinking
red steadily.
Short circuit, Wiring
error, Overload
Check AC wiring for
short circuit.
Remove load.

12
5. 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.
6. Warranty
We guarantee this product against defects in materials and workmanship
for a period of 24 months from the date of purchase and will repair or
replace any defective power inverters if you directly return them to us with
postage paid.
This warranty will be considered void if the unit has been misused, altered,
or accidentally damaged. COTEK is not liable for anything that occurs as a
result of the user’s fault.

No.33, Sec. 2, Renhe Rd., Daxi Dist., Taoyuan City 33548, Taiwan
Phone烉+886-3-3891999 FAX烉+886-3-3802333
http烉// www.cotek.com.tw
2015.01._A1