- Wilo Canada Inc.

Domestic (sanitary) hot water circulation
High-efficiency pumps (single pumps)
Series overview Wilo-Stratos-Z
Special features/product benefits
Design
• Maximum efficiency with ECM technology
• Up to 80% energy savings compared to standard uncontrolled pumps
• Ease of installation with front access to wiring and programming "Red
Self regulating, Inline, ECM (Electronically Communicated) type
Application
Secondary hot water circulation systems of all kinds, hot-water heating systems of all kinds, air-conditioning, closed cooling circuits, industrial circulation systems
1.5
3 x 40
fied
• External control and monitoring via optional IR interface modules
(LONworks, BACnet, 0-10 Vdc, Ext Off, Ext Min and SBM Run Signal)
Model Numbers
Example:
Stratos
Z
Button", position adjustable LCD viewing screen
• Lead free construction, Stainless Steel volute, NSF 61 Annex G certi-
• Remote control and access to data logger via IF infra-red device
• Built in overload fault contacts (opens on over/under voltage, dry run,
Wilo-Stratos-Z 1.5 - 3 x 40
High-efficiency pump, electronically controlled
NSF 61 Annex G certified pump for Domestic and
Sanitary Hot Water
Flange size [in]
Min/max discharge head [ft]
locked rotor, overload and over temperature)
Duty chart
10
15
20
25
30
35
40
Q[m ³ /h]
Wilo-Stratos-Z
H[m]
5
H[ft]
0
60 Hz
40
1.5
x3
12
-4
0
10
30
8
1.
5x
25
x3
35
5
1.2
x3
5
1.2
20
10
-30
-3
3-
25
6
3x3
2x3
0
4
2
0
0
20
40
As at: 02/2012 - Subject to change without prior notice
60
80
100
120
140
160
180 Q[US gpm]
0
1
Domestic (sanitary) hot water circulation
High-efficiency pumps (single pumps)
Series overview Wilo-Stratos-Z
Equipment/function
Operating modes
• Manual control mode (constant speed)
• Δp-c for constant differential pressure
• Δp-v for variable differential pressure
• Δp-T for temperature-controlled differential pressure (programmable via Infra-red device, LON or BacNet)
Manual functions
• Operating mode setting
• Differential-pressure setpoint setting
• Setting automatic setback operation
• Pump ON/OFF setting
• Speed setting (manual control mode)
Scope of delivery
• Pump
• Flange gaskets
• Operating instructions
Accessories
• IR-Module
• IR-Stick
• IF-Modules Stratos: BACnet, LONworks, Ext. Off, Ext. Min, SBM,
Ext. Off/SBM
Automatic functions
• Stageless power adjustment depending on the operating mode
• Automatic setback operation
• Deblocking function
• Soft start
• Full motor protection with integrated overload shut down
External control functions
• "External Off" control input (possible with optional Stratos
IF-Modules)
• "External Min" control input (possible with optional Stratos
IF-Modules)
• "Analogue In 0 - 10 V" control input (remote speed adjustment) (possible with optional Stratos IF-Modules)
• "Analogue In 0 - 10 V" control input (remote setpoint adjustment)
(possible with optional Stratos IF-Modules)
Signal and display functions
• Collective fault signal (potential-free NC contact)
• Individual run signal (potential-free NO contact) (possible with optional Stratos IF-Modules)
• Fault signal light
• LC display for pump data and fault codes
Data exchange
• Infrared interface for wireless data exchange with IR-Module/IR-Stick
• Serial digital interface BACnet MS/TP Slave for connection to building
automation BA via BUS system RS485 (possible with IF-Modules
Stratos).
• Serial digital LON interface for connection to a LONWorks network
(possible with Stratos IF-Modules)
Dual pump management (dual pump or 2 x single pump)
• Main/standby mode (automatic fault-actuated switchover/time-dependent pump cycling): Various combinations with Stratos IF-Modules (accessories) possible
• Parallel operation (efficiency-optimised peak load activation and deactivation): Various combinations with Stratos IF-Modules (accessories) possible
2
Wilo-Stratos-Z
Domestic (sanitary) hot water circulation
High-efficiency pumps (single pumps)
Equipment/function
Wilo-Stratos-Z
Operating modes
Manual control mode (constant speed)
>p-c for constant differential pressure
>p-v for variable differential pressure
>p-T for temperature-controlled differential pressure
•
•
•
•
Manual functions
Operating mode setting
Differential-pressure setpoint setting
Setting automatic setback operation
Pump ON/OFF setting
Speed setting (manual control mode)
•
•
•
•
•
Automatic functions
Infinitely variable power adjustment depending on
the operating mode
Automatic setback operation
Deblocking function
Soft start
Integrated overload protection
•
•
•
•
•
External control functions
"Analogue In 0 ... 10 V" control input (remote speed
adjustment)
•
(Possible with optional Interface Module)
"Analogue In 0 ... 10 V" control input (remote adjust- •
(Possible with optional Interface Module)
ment setpoint)
Signal and display functions
Collective fault signal (potential-free NC contact)
Fault signal light
LCD screen for the display of pump data and fault
codes
•
•
•
Data exchange
Infra-red remote control for wireless data exchange
and/or pump adjustment via USB stick or PDA type IR
device
•
Serial digital LON interface for connection to a LON- •
(Possible with optional Interface Module)
WORKS network
Serial digital BACnet S/TP interface for connection to •
(Possible with optional Interface Module)
an RS485 bus system
Dual pump management (dual pump or 2 x single pump)
Main/standby mode (automatic fault-actuated switchover/time-dependent pump cycling)
•
Parallel operation (efficiency-optimised peak load
cut-in and out)
•
Equipment/scope of delivery
Flange gasket
•
Installation and operating instructions
•
(not for 125# ANSI Flange model)
• = available, - = not available
As at: 02/2012 - Subject to change without prior notice
3
Domestic (sanitary) hot water circulation
High-efficiency pumps (single pumps)
Technical data Wilo-Stratos-Z
Wilo-Stratos-Z...
1.25x3-25
1.25x3-35
1.5x3-25
1.5x3-40
2x3-30
3x3-30
•
•
•
•
•
•
•
•
•
•
•
•
Max. head Hmax
23 ft
36 ft
26 ft
39 ft
30 ft
33 ft
Max. head Hmax
7m
11 m
8m
12 m
9m
10 m
Max. flow Qmax
35 US GPM
48 US GPM
66 US GPM
83 US GPM
105 US GPM
3
3
3
Approved fluids (other fluids on request)
Heating water
Water glycol mixtures up to 50% concentration
Power
Max. flow Qmax
3
8 m /h
11 m /h
15 m /h
19 m /h
3
180 US GPM
24 m /h
41 m3/h
Permitted field of application
Temperature range for applications in heating, ventilation & air-conditioning systems at max. ambient
temperature of +40 °C
+14 to +230 °F (-10 to +110 °C)
Temperature range for applications in secondary hot
water circulation systems at max. ambient temperature of +40 °C
+32 to +176 °F (0 to +80 °C)
Max. ambient temperature T
104 °F
Max. ambient temperature T
40 °C
Max. permitted total hardness in potable water circulation systems
3.57 mmol/l
Pipe connections
Nominal flange diameter Dia
1.25 "
1.25 "
1.5 "
1.5 "
2"
3"
Non ANSI flange (oval, rotated 90°)
•
•
•
•
–
–
Non ANSI flange (oval)
–
–
–
–
–
–
HV pump flange
–
–
–
–
•
–
125# ANSI flange
–
–
–
–
–
•
Input power - single phase U
230 V
230 V
230 V
230 V
230 V
230 V
Input frequency f
60 Hz
60 Hz
60 Hz
60 Hz
60 Hz
60 Hz
H
H
Electrical connection
Motor/electronics
Speed control
Frequency converter
Degree of protection
Insulation class
Enclosure 2
H
H
H
H
Materials
Pump volute
Stainless steel (AISI CF-8M)
Impeller
Engineered
composite
(PPE - 30%
GF)
Engineered composite (PPS - 40% GF)
Pump shaft
Stainless steel (X39CrMo17-1)
Bearing
Carbon, synthetic resin impregnated
Minimum suction head
Minimum suction head at 122 °F (50°C)
4.3 psi
4.3 psi
4.3 psi
7.1 psi
7.1 psi
10.0 psi
Minimum suction head at 203 °F (95°C)
14.2 psi
14.2 psi
14.2 psi
17.1 psi
17.1 psi
21.3 psi
Minimum suction head at 230 °F (110°C)
22.8 psi
22.8 psi
22.8 psi
25.6 psi
25.6 psi
32.7 psi
• = available, - = not available
4
Wilo-Stratos-Z
Domestic (sanitary) hot water circulation
High-efficiency pumps (single pumps)
Pump curves Wilo-Stratos-Z
Wilo-Stratos-Z 1.25x3-25
Δp-c (constant)
0
1
Δp-v (variable)
2
3
4
5
H[ft]
6
7
Q [m³/h]
8
Wilo-Stratos-Z 1.25x3-25
1 ~/ 60 Hz
25
0
H[m]
6
15
2
3
4
5
6
7
Q [m³/h]
8
Wilo-Stratos-Z 1.25x3-25
1 ~/ 60 Hz
25
H[m]
-v
∆p
-c
Δp
20
8
1
H[ft]
20
8
6
15
4
10
4
10
m
.
ax
m
ax
2
5
.
2
5
min
m in
.
.
0
0
4
8
0
0
12
0,4
16
0,8
1
2
20
24
1,2
3
4
28
32
1,6
5
Q [USg.p.m.]
2,0
6
7
P 1[hp]
0
Q [m³/h]
0
P1[kW]
0.12
m
m
m
m
7m11/ 16'/6 7/ 16'/5 1 / 8 '/4 13 / 16'/3 9 / 16'/2m
6'/
15 / 1
6
16
13
9
19
22
12
8
0.10
0.08
0.06
'/1m
31/ 4
4
0.04
min.
0
0
4
8
12
16
20
0.02
24
28
32
0
0
2,4 Q [l/s]
8
max.
16
0
Q [USg.p.m.]
0
4
8
12
0.4
16
0.8
1
2
20
24
1.2
3
4
28
32
1.6
5
Q [USg.p.m.]
2.0
6
P 1[hp]
Q [l/s]
2.4
7
8
0
Q [m³/h]
P1[kW]
max.
0.12
16
m m
m
m
m
m
'/7 16'/6 7/ 16'/5 1 / 8'/4 3 / 16'/3 9 / 16'/2
16
1
11 /
15 /
6
9
13
16
22 19
12
8
0.10
0.08
0.06
0.04
4
min.
0
0
4
8
12
16
0.02
20
24
28
32
Q [USg.p.m.]
10
Q [m³/h]
0
Wilo-Stratos-Z 1.25x3-35
Δp-c (constant)
0
Δp-v (variable)
2
4
6
H[ft]
8
10
Q [m³/h]
H[m]
14
Wilo-Stratos-Z 1.25x3-35
1 ~/ 60 Hz
40
12
Δp
-c
0
H[ft]
2
4
6
H[m]
Wilo-Stratos-Z 1.25x3-25
1 ~/ 60 Hz
14
40
12
Δp
-
10
30
8
10
v
30
8
20
6
8
20
6
.
.
4
10
m in
0
0
10
0
0.5
0
P 1[hp]
2
0.4
20
1.0
30
1.5
4
2.0
6
Q [USg.p.m.]
40
2.5
8
3.0
10
0.5
2
P1[kW]
0.30
0.25
0.20
0.15
0.10
0.05
1/ 4
0
30
40
As at: 02/2012 - Subject to change without prior notice
10
0
min.
3 '/1m
10
20
0
0
max.
0.1
0
Q [l/s]
7/ 8
0.2
0
Q [USg.p.m.]
0
2
.
Q [m³/h]
m
m
m
'/11 91/ 2'/9 15 /16'/7m 7/ 16'/5
2
16
36
22
3m
3 16'/
91 /
0.3
m in
2
.
0
ax
m
ax
m
4
10
20
30
1.0
1.5
4
2.0
6
Q [USg.p.m.]
40
2.5
8
3.0
Q [l/s]
Q [m³/h]
10
P 1[hp]
max.
0.4
0.3
0m m m m
'/1 1 / 2'/9 1 / 4'/85 /16'/71 16'/6m6'/5m '/4m
/ 71 1 8
29 26 221 191 16 / 13 /
32
0.30
0.20
0.2
0.15
0.1
0
P1[kW]
0.25
6
13 / 1
0
0.10
min.
0
10
20
0.05
30
40
Q [USg.p.m.]
0
5
Domestic (sanitary) hot water circulation
High-efficiency pumps (single pumps)
Pump curves Wilo-Stratos-Z
Wilo-Stratos-Z 1.5x3-25
Δp-c (constant)
0
Δp-v (variable)
4
8
12
H[ft]
25
0
Q [m³/h]
Wilo-Stratos-Z 1.5x3-25
1 ~/ 60 Hz
H[m]
8
Δp
4
8
12
H[ft]
Q [m³/h]
Wilo-Stratos-Z 1.5x3-25
1 ~/ 60 Hz
25
8
Δp
-c
-v
20
6
15
20
6
15
4
.
.
ax
m
ax
m
4
10
10
5
0
H[m]
2
m in
.
0
10
20
0
30
1
0
40
50
2
3
4
4
8
12
P 1[hp]
1/ 4
26
0.3
'/8m
'/6m
11/ 16
19
0.2
1/ 8
13
0
30
0
P 1[hp]
P1[kW]
0.30
0.25
'/4m
0.20
0.15
0.10
0.05
40
50
Q [USg.p.m.]
60
0
0
min.
31/ 4 '/1m
10
20
0
.
Q [l/s]
' 2m
69/ 16 /
0.1
0
m in
Q [m³/h]
max.
0.4
0
Q [USg.p.m.]
60
2
5
0
10
20
30
1
40
50
2
Q [USg.p.m.]
60
3
4
4
8
P1[kW]
max.
0.30
0.25
m m
'/7m1 / 16'/6m7/ 16'/5 1 / 8 '/4 3 / 16'/3m
1
1
16 13
9
19
6
15 / 1
22
0.2
0.20
0.15
0.10
0.1
0
Q [l/s]
Q [m³/h]
12
0.4
0.3
0
0.05
min.
0
10
20
30
40
50
Q [USg.p.m.]
60
0
Wilo-Stratos-Z 1.5x3-40
Δp-c (constant)
0
Δp-v (variable)
4
8
12
H[ft]
Q [m³/h]
16
Wilo-Stratos-Z 1.5x3-40
1 ~/ 60 Hz
40
Δp
-c
0
H[m]
14
H[ft]
12
40
4
8
12
Q [m³/h]
16
H[m]
14
Wilo-Stratos-Z 1.5x3-40
1 ~/ 60 Hz
12
Δp
-v
10
10
30
30
8
ma
20
6
x.
8
ma
x.
20
6
4
0
0
P 1[hp]
0.6
0.5
0.4
2
20
1
40
2
4
3
8
5
16
1/ 4
26
'/8m
1/ 8
13
31/ 4 '/1m
0
20
0
P 1[kW ]
'/6m
0.4
'/4m
0.3
0.4
0.2
0.3
0.1
min.
40
60
0
0
P 1[hp]
0.6
' 2m
69/ 16 /
0.1
0
Q [l/s]
11/ 16
19
0
.
Q [m³/h]
max.
2m
3 '/1
10m
13/ 16'/
39 / 8
32
0.2
6
4
12
0.3
0
80 Q [USg.p.m.]
60
80Q [USg.p.m.]
0
2
m in
20
1
80Q [USg.p.m.]
60
2
4
3
8
4
12
5
16
'
3 /8
0m
39
0.2
'/1
6
13 / 1
32
1 4
/
26
m
'/8
'/6m
6
11 / 1
19
1/8
13
Q [l/s]
m
'/4
0
20
P 1[kW ]
0.4
0.3
0.2
0.1
min.
0.1
0
Q [m³/h]
max.
0.5
0
40
2m
0
0
4
10
min.
/1
10
40
60
80 Q [USg.p.m.]
0
Wilo-Stratos-Z
Domestic (sanitary) hot water circulation
High-efficiency pumps (single pumps)
Pump curves Wilo-Stratos-Z
Wilo-Stratos-Z 2x3-30
Δp-c (constant)
0
Δp-v (variable)
5
10
15
H[ft]
20
30
H[m]
10
5
10
-c
8
20
6
15
H[ft]
30
Δp
25
0
Q [m³/h]
25
Wilo-Stratos-Z 2x3-30
1 ~/ 60 Hz
20
25
Q [m³/h]
H[m]
10
Wilo-Stratos-Z 2x3-30
1 ~/ 60 Hz
Δp
-v
8
25
20
6
m
ax
.
15
15
.
ax
10
10
2
m in
5
.
0
0
20
40
0
60
80
100
4
5
10
Q [USg.p.m.]
20
25
0.4
1/ 2
29
6
'/9m 2
'/8m
'/6m
11/ 16
19
20
40
60
P1[kW]
0.5
0.4
'/4m
0.3
0.2
0.1
80
Q [USg.p.m.]
100
0
0
min.
0
0
0
'/2m
69/ 16
0.2
0
1/ 8
13
0
8 Q [l/s]
max.
1/ 4
m in
Q [m³/h]
6
15
P 1[hp]
0.6
2
5
.
2
0
4
m
4
0
20
40
60
2
5
80
100
4
10
Q [USg.p.m.]
8 Q [l/s]
6
15
20
25
Q [m³/h]
P1[kW]
P 1[hp]
0.5
max.
0.6
0.4
m
m m
m
m
m
m
'/9 1 / 4'/8 15 / 16'/7 11 / 16'/6 7/ 16'/5 1 / 8 '/413 / 16'/3
16 13 9
29 26 22 19
0.4
0.3
1/2
0.2
0.2
0
0
0.1
min.
0
20
40
60
80
100
Q [USg.p.m.]
0
Wilo-Stratos-Z 3x3-30
Δp-c (constant)
0
Δp-v (variable)
10
20
30
H[ft]
Q [m³/h]
Wilo-Stratos-Z 3x3-30
1 ~/ 60 Hz
35
0
H[m]
10
30
-c
8
20
6
ma
x.
15
4
10
20
30
Q [m³/h]
Wilo-Stratos-Z 3x3-30
1 ~/ 60 Hz
Δp
H[m]
10
-v
8
25
20
6
ma
x.
15
4
10
80
2
4
0
6
10
160 Q [USg.p.m.]
120
8
20
P 1[hp]
m
0.8 3213/ 16'/10
1
26 / 4
'/8m
0.6
'/6m
11/ 16
19
1/ 8
13
0
0
0.2
0
31/ 4 '/1m
40
80
120
As at: 02/2012 - Subject to change without prior notice
P 1[kW ]
0.8
0.6
'/4m
0.4
'/2m
69/ 16
min.
0.4
0
Q [l/s]
max.
1.0
0
Q [m³/h]
10
30
0
0.2
160 Q [USg.p.m.]
0
40
2
2
.
80
160Q [USg.p.m.]
120
4
6
10
8
20
10
30
P 1[hp]
1.0
0.8
0.6
/
m
'/8
1/4
26
m
'/6
6
11 / 1
19
1/ 8
13
Q [l/s]
m
'/4
0
0
80
0.6
0.2
min.
40
P 1[kW ]
0.8
0.4
0.4
0.2
0
Q [m³/h]
max.
0m
0
40
'/1
0
0
m in
5
13
16
.
32
2
m in
5
0
35
30
Δp
25
10
H[ft]
120
160 Q [USg.p.m.]
0
7
Domestic (sanitary) hot water circulation
High-efficiency pumps (single pumps)
Terminal diagram, motor data Wilo-Stratos-Z
Terminal diagram
FC: Collective fault signal (NC contact rating 1 A, 250 V~)
230 V
PE
FC
1~230 V / 60 Hz
FC
L1 L3
L2 L3
L1 L2
PE
3~ 230 V / 60 Hz
Motor data
Wilo-Stratos-Z...
8
Rated motor
power
Speed
Power consumption
1~230 V
Current at
1~230V
Current at
3~230V
Thermal protection
Threaded
cable
connection
P2
n
P1
I
–
–
hp
rpm
W
A
1.25x3-25
0.134
1400 - 3700
9 - 130
0.13 - 1.20
0.13 - 1.20
integrated
1xNPT 1/4"
1xNPT 1/2"
1.25x3-35
0.268
1600 - 4800
16 - 310
0.16 - 1.37
0.16 - 1.37
integrated
1xNPT 1/4"
1xNPT 1/2"
1.5x3-25
0.268
1800 - 4800
18 - 310
0.17 - 1.37
0.17 - 1.37
integrated
1xNPT 1/4"
1xNPT 1/2"
1.5x3-40
0.469
1400 - 4600
25 - 470
0.20 - 2.05
0.20 - 2.05
integrated
1xNPT 1/4"
1xNPT 1/2"
2x3-30
0.469
1400 - 4100
25 - 430
0.20 - 1.88
0.20 - 1.88
integrated
1xNPT 1/4"
1xNPT 1/2"
3x3-30
0.872
950 - 3300
38 - 800
0.30 - 3.50
0.30 - 3.50
integrated
1xNPT 1/4"
1xNPT 1/2"
–
Wilo-Stratos-Z
Domestic (sanitary) hot water circulation
High-efficiency pumps (single pumps)
Dimensions, weights Wilo-Stratos-Z
Dimension drawing 3
b1
b4
a1
a1
b5
b4
Dimension drawing flange 1
a2
b2
b1
b5
l2
l2
a2
b2
l0
l1
blind plug
NPT ¼"
NPT ½"
l0
blind plug
NPT ¼"
NPT ½"
l1
Dimension drawing 1
Dimension drawing flange 2
ØD
Øk
nxdL
Ød
Øk
ØD
Dia
Ød
Dia
nxdL
Dimensions, weights
Wilo-Stratos-Z...
Nominal flange
diameter
Overall length
Dia
1.25x3-25
Dimensions
l0
l1
l2
a1
a2
In.
–
In.
mm
In.
mm
In.
mm
In.
mm
In.
mm
1.25
32
61/2
165
31/4
82.5
115/16
49
73/16
182
13/4
45
216
41/
4
108
23/
16
55
715/
201
21/
16
52
216
41/4
108
23/16
55
8
203
21/16
53
254
5
127
25/8
66
915/16
252
21/2
64
139.5
25/
66
101/
256
21/
63
178
31/16
78
1213/16
325
37/16
1.25x3-35
1.25
32
1.5x3-25
1.5
40
81/2
81/2
1.5x3-40
1.5
40
10
2x3-30
2
50
11
279
51/
3x3-30
3
80
14
356
7
As at: 02/2012 - Subject to change without prior notice
2
8
16
16
2
87
9
Domestic (sanitary) hot water circulation
High-efficiency pumps (single pumps)
Dimensions, weights Wilo-Stratos-Z
Dimensions, weights
Wilo-Stratos-Z...
Dimensions
b1
b2
Weight approx.
b4
b5
Dimension
drawing
m
–
In.
mm
In.
mm
In.
mm
In.
mm
lbs
kg
–
1.25x3-25
21/8
54
17/8
48
31/2
89
59/16
142
9.92
4.5
1
1.25x3-35
23/
8
61
23/
16
55
43/
16
106
53/
4
146
13.23
6.0
1
1.5x3-25
25/8
66
23/16
55
43/16
106
53/4
146
20.94
9.5
1
1.5x3-40
27/8
73
21/2
64
43/4
120
67/16
163
28.66
13.0
1
2x3-30
31/4
82
21/2
64
43/4
120
67/16
163
30.86
14.0
3
3x3-30
41/
103
35/
84
61/
156
71/2
191
59.52
27.0
3
16
16
8
Flange dimensions
Wilo-Stratos-Z...
Flange
Nominal flange
diameter
–
Dia
Ød
Øk
Dimension drawing, flange
n x Ø dL
–
–
In.
–
In.
mm
In.
mm
In.
mm
pcs. x In. pcs. x
mm
–
1.25x3-25
Non ANSI (oval
90° rotated)
1.25
32
43/4
121
27/8
73
31/2
89
2 x 9/16
2 x 14
1
1.25x3-35
Non ANSI (oval
90° rotated)
1.25
32
43/4
121
27/8
73
31/2
89
2 x 9/16
2 x 14
1
40
43/
121
73
31/
2
89
2 x 14
1
73
31/
2
89
2 x 14
1
87
4
102
2 x 9/16
2 x 9/16
4 x 9/16
4 x 14
2
128
6
152
4 x 3/4
4 x 19
2
1.5x3-40
Non ANSI (oval)
40
43/
4
121
2x3-30
Non ANSI (round) 2
50
51/4
133
27/8
27/8
37/16
3x3-30
ANSI R.F Class
125 ASTMA 126
80
79/16
192
51/16
1.5x3-25
10
Pump flange dimensions
Non ANSI (oval)
1.5
1.5
3
4
Wilo-Stratos-Z