View - Enercorp Instruments Ltd

SENTRY
Enercorp instruments ltd
(800) 363-7267
Rev 1.0-02/00
VFI Technical Notes
VFI Sensors reliably monitor VFDs. Here’s how.
Variable frequency drives (VFDs)
control motor speed and are
indispensable to modern HVAC
systems. VFDs rectify AC power to DC
in order to produce simulated AC
power. The output is a distorted sine
wave that cannot be accurately
measured by typical current sensors.
Most current transducers on the
market are the average responding
type. They monitor average peak
current and divide by 1.414 (√2) to
obtain the amperage value, assuming a
smooth sine wave. This works well for
constant speed loads.
Error
Pure Sine Wave
Actual VFD Waveform
i
IP
I=
IP
2
Average Responding Transducer
Accurate measurement of
pure sine waves only.
I = Avg (i2)
VFI Current Transducer
Accurate measurement of
variable torque VFDs
found in HVAC applications.
CONTENTS
PAGE
VFI Technical Notes
2
Plant Optimization Technical Notes
3
Sentry 100/200 Series current transducers
4–5
Sentry 200-3 and 200-4 Series high current transducers
6–7
Sentry “Smart” 500 Series current switches
8–9
Sentry 250 Series current switches
10–11
Sentry HD100 Series high power current switches
12
Sentry PBR Series PowerBASE relays
13
Sentry KW2000 Series power transducers
14–15
ProteCT Series safe split core CTs
16
500, 600, 601 Series 5A split core CTs
17
2, 5, 7, 8 Series 5A solid core CTs
18
Other Products
19
Fan and Pump Status Technical Notes
Enercorp instruments ltd
(800) 363-7267
www.enercorp.com
2
Rev 1.0-02/00
Back Cover
Variable
Frequency
Integration
for VFDs
The output waveform of a typical
VFD, however, is highly distorted in
comparison to a pure sine wave. The
simulated wave can have much higher
peaks, with relative sizes that change
with output frequency. An average
responding transducer could be
accurate at 20 Hz, but 20% high at
30Hz, and 20% low at 40Hz. Average
responding transducers simply cannot
provide an accurate measurement of
these distorted waveforms.
We have introduced an
exclusive Variable Frequency
Integration (VFI™) technology
specifically to address this problem.
It accurately measures the current of a
VFD controlled motor at any speed.
These sensors with VFI™ are
tuned to measure the current peaks
produced by variable torque VFDs
commonly found in HVAC systems.
They employ a proprietary
mathematical algorithm that integrates
the current over time. Electrical
engineers call this the “true heating
value” of the complex waveform.
PLANT OPTIMIZATION Technical Notes
Saving Energy in Central Plants
Chiller Plants have many complex,
inter-related pieces of equipment that
together use up to 50% of a building’s
energy. Changing the operation of one
machine affects all the others. For
example, a lower condenser water set
point increases chiller efficiency but
Cooling
Tower
75 A
increases tower fan power load. On
the other hand, a higher chilled water
set point will cut chiller and tower
energy but increase VAV Air Handler
fan power load. It is difficult to
determine the best strategy to achieve
best energy efficiency overall.
Power Consumed:
Amps x Volts x Power Factor
Tower
Control
EMS Work Station
CHW 45D
Chiller Plant
Chiller
Plant
CDW Pump
COND
Power
Cooling Tower
EVAP
Chiller
CHW S
CHW Pump
Power
CDW
CHW
984 KW
Before
CH1-ON
❙❙ Mount a Sentry current transducer on
the power leads to the chillers and to
each major fan and pump motor.
Select models with VFI™ for variable
speed loads (pp. 4–7).
❙❙ Mount a Sentry AutoPhase™ power
transducer on the switchgear feed
that serves the plant. The network
models (p. 14) provides voltage and
power factor values in real time.
Power
Power
Sentry Solution: Measure the real
time power consumption of major
equipment. Then program the
automation system to match operating
parameters to weather and load
conditions.
823 KW
After
CDW
CHW
Air Handler 2
75 A
Control
Network
AHU-1
❙❙ Program the automation system to
calculate KW for each load and then
aggregate the loads.
CHW R
Chiller
Air Handler 1
❙❙ Wire the outputs to your controller(s).
75 A
AHU-2
Benefits: This system allows
building operators to experiment with
their systems under different weather
and load conditions. Using current
transducers, whose cost is one-tenth
that of kW transducers, is the most
economical way to measure plant
energy. The current transducers also
double as status indicators, further
reducing costs.
KILOWATT FORMULAS
Single Phase:
Power
Power
Amp Transducer
4-20mA (pp. 4–7)
Volts ✕ Amps ✕ Power Factor
kW = _______________________
1000
Two-Phase:
Main Switch Board (MSB)
Volts ✕ Amps ✕ Power Factor x 2
kW = _______________________
1000
Network
Power
Monitor
Three-Phase:
Volts ✕ Amps ✕ Power Factor x 1.73
kW = _______________________
1000
KWN2000
Power
Network Variables:
Volts, Power Factor,
etc. (p. 14)
Enercorp instruments ltd
(800) 363-7267
info@enercorp.com
Rev 1.0-02/00
3
SENTRY 100/200 Series
AC Current Transducers with
0-5/10VDC or 4-20mA Output
The Sentry 100/200 Series AC Current
Transducers provide a voltage or current
signal proportional to monitored current
up to 200A. Available in both solid core
and split core configurations.
FEATURES
Variable
Frequency
Integration
for VFDs
SIGNAL DIAGRAM
New VFI Technology for VFDs
New Variable Frequency Integration
technology uses high speed sampling to
provide accurate measurements of current
on the load side of VFDs.
Reliability
Field-proven in hundreds of thousands of
installations since 1982. Solid performance
even in rooftop environments. Backed by
five-year warranty.
Convenience
Compact size, integral mounting flange, and
two-wire hookup assure an installation that
is simple, fast, and secure. You save money
and avoid callbacks. The split core version
simplifies retrofits.
APPLICATIONS
❙❙ Automation Systems: Analog current reading
for remote monitoring and software alarms
❙❙ Fan/Pump Status: Electronic proof of flow
❙❙ Sense High Current: Accurately read the
secondary current from high ratio CTs
4—20mA 0—5 VDC 0—10 VDC
Output Output
Output
20
5.0
10.0
16
3.75
7.5
12
2.5
5.0
8
1.25
2.5
4
0.0
0.0
0
25
50
75
Input % of Range
100
INPUT MAXIMUMS
RANGE
MAXIMUM
CONTINUOUS
MAX.
6 SEC.
MAX.
1 SEC
0–2A
0–5A
0–10A
0–20A
0–50A
0–100A
0–150A
0–200A
40A
100A
80A
110A
175A
200A
300A
400A
60A
124A
125A
150A
215A
300A
450A
500A
100A
250A
250A
300A
400A
600A
800A
1,000A
See Ordering Information for models
with listed ranges.
HVAC Controller
CONNECTIONS
153.2A
Analog Input
AI
Single Piece Design
Cuts Panel Labor
Field
Selectable
Ranges
1MΩ Recommended
100kΩ Acceptable
100 Series
Range Jumper
1(—) 2(+)
Output
Works on VFD Outputs
200 Series
L
I
N
E
Enercorp instruments ltd
(800) 363-7267
www.enercorp.com
4
Rev 1.0-02/00
Range Jumper
Motor
24 VDC Power
(—) (+)
1(—) 2(+)
Output
NOTES
• Captive screw terminals.
• 12–22 AWG solid or stranded.
• Observe polarity.
Load
(+) (Controller,
Meter, etc.)
(—)
SENTRY 100/200 SERIES
AC Current Transducers with 0-5/10VDC or 4-20mA Output
Split Core
SPECIFICATIONS
2.4"
61mm
0.22"
5.7mm
2.25"
57.2mm
0.857"
21.7mm
0.854"
21.7mm
3.53"
89.7mm
0.188"
4.5mm dia.
Typical of 2
1.190"
30.2mm
3.044"
77.3mm
Solid Core
2.433"
61.8mm
0.75"
19mm dia.
2.18"
55.4mm
Output Signal
0–5VDC, 0–10VDC, 4–20mA (see Ordering Info)
Accuracy
0–5/10VDC:
4–20mA:
1% FS over 5–100% of range
0.5% FS
Response Time, 0-90%
0–5/10VDC:
4–20mA:
100 mS
300 mS
Frequency Range
0–5/10VDC:
50–60Hz
4–20mA w/o VFI: 20–100Hz
4–20mA w/ VFI: 10–400Hz
Power Supply
0–5/10VDC:
4–20mA:
Output Load, 0–5/10VDC 1 Megohm required for rated accuracy
100K Ohm Load, add 1.3% error
Output Load, 4–20mA
950 ohms max @ 24 VDC
Rmax = (Vsupply—5) / 0.020A
Output Signal Limit
2x rated output
Isolation Voltage
UL listed to 1270 VAC, tested to 5kV
Input Ranges
Field Selectable Ranges from 0–200A
(see Ordering Info)
Sensing Aperture
Solid core:
Split core:
Case
UL 94V-0 Flammability rated thermoplastic
Environmental
0–5/10VDC:
4–20mA:
For all:
Approvals
UL, ULC, CE
0.967"
24.56mm
3.53"
89.7mm
0.17"
4.5mm dia.
Typical of 2
0.931"
23.7mm
Self-powered
12–40VDC, Loop-powered
0.75" dia.
0.85" sq.
–58/149° (–50/65°C)
–4/122°F (–20/50°C)
0–95% RH, non-condensing
Need an interposing relay? See the new PowerBASE Relay on page 13.
0.6"
15mm
3.08"
78mm
ORDERING INFORMATION
4–20mA Output Models
(Specify VFI when measuring VFD loads)
VDC Output Models
MODEL
RANGE
VFI
CASE
MODEL
RANGE
OUTPUT
200-05
0–2, 0–5A
No
Solid Core
100-1L
0–10, 0–20, 0–50A
0–5VDC Solid Core
200-1
0–10, 0–20, 0–50A
No
Solid Core
100-2L
0–100, 0–150, 0–200A
0–5VDC Solid Core
200-2
0–100, 0–150, 0–200A
No
Solid Core
100-3L
0–10, 0–20, 0–50A
0–10VDC Solid Core
SC200-05
0–2, 0–5A
No
Split Core
100-4L
0–100, 0–150, 0–200A
0–10VDC Solid Core
SC200-1
0–10, 0–20, 0–50A
No
Split Core
SC100-1L
0–10, 0–20, 0–50A
0–5VDC Split Core
SC200-2
0–100, 0–150, 0–200A
No
Split Core
SC100-2L
0–100, 0–150, 0–200A
0–5VDC Split Core
200-05-V
0–2, 0–5A
Yes
Solid Core
SC100-3L
0–10, 0–20, 0–50A
0–10VDC Split Core
200-1-V
0–10, 0–20, 0–50A
Yes
Solid Core
SC100-4L
0–100, 0–150, 0–200A
0–10VDC Split Core
Yes
Solid Core
Contact Neilsen-Kuljian for availability of the earlier
100 Series products which have a 10% signal offset.
200-2-V
0–100, 0–150, 0–200A
SC200-05-V
0–2, 0–5A
Yes
Split Core
SC200-1-V
0–10, 0–20, 0–50A
Yes
Split Core
SC200-2-V
0–100, 0–150, 0–200A
Yes
Split Core
CASE
Enercorp instruments ltd
(800) 363-7267
info@enercorp.com
Rev 1.0-02/00
5
SENTRY 200-3 & -4 Series
High Current 4-20mA Transducers
The Sentry High Current 200 Series Transducers monitor up to
2000A of AC current and provide a loop-powered 4–20mA
signal proportional to the monitored current.
FEATURES
Variable
Frequency
Integration
for VFDs
All Frequencies
Exclusive VFI™(Variable Frequency
Integration) technology is accurate both on
sine wave and on distorted VFD waveforms.
Large Aperture
Accommodates large conductors or wire
bundles.
Multi-Range
Fast, switch-selectable range setting.
No zero or span field adjustments required.
CONNECTIONS
24 VDC Power
(—) (+)
Easy Installation
Single piece with integral mounting brackets
makes a simple, solid installation.
APPLICATIONS
❙❙ Large Pumps: Detect dry run electronically
❙❙ Heating Elements: Monitoring heater load
gives faster response than temperature
sensors
HVAC Controller
Enercorp instruments ltd
(800) 363-7267
www.enercorp.com
6
Rev 1.0-02/00
SIGNAL DIAGRAM
Output limited at 25 mA
24
AI
Single Piece Design
Cuts Panel Labor
Field
Selectable
Ranges
Works on VFD Outputs
L
I
N
E
NOTES
• Deadfront captive screw terminals.
• 12–22 AWG solid or stranded.
• Observe polarity.
Output Signal
mA
1631.5A
Analog Input
1(—) 2(+)
Output
Low Mid High
Range Switch
❙❙ Chillers: Load measurement for energy
savings
Load
(+) (Controller,
Meter, etc.)
(—)
20
16
12
8
4
0
Motor
25
50
75
Input % of Range
100
125
SENTRY 200-3 & -4 Series
High Current 4-20mA Transducers
4.5"
114mm
SPECIFICATIONS
3.0"
76mm
dia.
4.215"
107mm
0.75"
19mm
4.5"
114mm
1.463"
37.2mm
0.19"
4.8mm dia.
(Bottom View)
4.1"
104mm
ORDERING INFORMATION
Example: Sentry 200-4-V
Current transducer with 4–20mA output
and 0–1000/1333/2000A range with “VFI”
(Variable Frequency Integration) technology.
MODEL
RANGE
Output Signal
4–20mA, loop powered
Output Limit
25mA
Accuracy
1.0% FS
Response Time
500 milliseconds to 90% of step change
Frequency
50–60Hz, sinusoidal (standard versions)
10–400Hz (VFI versions)
Supply Voltage
24 VDC nominal; 40 VDC maximum
Output Load
600 ohms max @ 24 VDC
Rmax = (Vsupply – 12) / 0.020 A
Isolation Voltage
600 VAC
Polarity Protection
Diode protected against reversed polarity
Input Ranges
Field selectable from 0 to 2,000A
Sensing Aperture
3.0" (7.6 cm) ID
Case
UL 94 flammability rated thermoplastic
Weight
1.3 lb (0.6 kg)
Environmental
–4/122°F (–20/50°C), 0–95%RH, non-condensing
Approvals
UL, ULC, CE (pending)
MAXIMUM AC CURRENT
MODEL RANGE
MAX.
MAX.
CONTIN. 6 SEC.
MAX.
1 SEC
200-3
0–375/500/750A
750A
1500A
3750A
200-3-V 0–375/500/750A
750A
1500A
3750A
Standard Models
200-4
0–1000/1333/2000A 2000A
4000A
10,000A
200-3
0–375, 0–500, 0–750A
200-4-V 0–1000/1333/2000A 2000A
4000A
10,000A
200-4
0–1000, 0–1333, 0–2000A
VFI Models
(for monitoring the load side of VFDs)
200-3-V
0–375, 0–500, 0–750A
200-4-V
0–1000, 0–1333, 0–2000A
Enercorp instruments ltd
(800) 363-7267
info@enercorp.com
Rev 1.0-02/00
7
SENTRY “Smart” 500 Series
Self-Calibrating Current Operated Switches
The Sentry 500 Series Current Switches
monitor up to 150 amps AC and provide
an auto-setting AC/DC switch configured
either for “over/under” monitoring or for
underload monitoring. They offer proven
reliability and solid performance in both
solid core and split core configurations.
FEATURES
Fastest Installation
Simply run the monitored conductor through the aperture, connect
wires to the switch contacts, and walk away. Automatically selfcalibrates on initial startup. Easily clear and reset if the application
changes. Self-powered for additional savings in wire and time.
Flexibility
The “over/under” configuration trips with either a 15% underload or
a 15% overload. The “underload” configuration trips only when current
falls 15% below the operating load. The split core version simplifies
retrofits.
Reliability
Neilsen-Kuljian current switches have been field-proven in hundreds of
thousands of installations since 1982. Solid performance even in
rooftop environments. Backed by five-year warranty.
“Smart” LED’s
Two LED’s provide quick visual confirmation of switch and calibration
status.
APPLICATIONS
Underload configuration
verifies operation.
❙❙ Monitor fan and pump status
❙❙ Verify status of facility or equipment power
AMPS
❙❙ Monitor heating elements
Operating Load
Underload Trip
—15%
❙❙ Direct control of light loads, such as lamps
and relays
Broken Belt or Coupling
TIME
CONNECTIONS
R
Contact
R
CLR RUN
Calib/
Alarm
Output
NOTES
• Terminals are #6
screws.
• Solid State AC/DC
Switch is not
polarity sensitive.
Over/Under configuration
trips on either underload or overload.
Jam or Blockage
AMPS
+15%
Enercorp instruments ltd
(800) 363-7267
www.enercorp.com
8
Rev 1.0-02/00
—15%
Overload Trip
Operating Load
Underload Trip
Broken Belt or Coupling
TIME
SENTRY “Smart” 500 Series
Self-Calibrating Current Operated Swtiches
SPECIFICATIONS
Split Core
2.4"
61mm
0.22"
5.7mm
2.25"
57.2mm
0.857"
21.7mm
0.854"
21.7mm
3.53"
89.7mm
0.188"
4.5mm dia.
Typical of 2
1.190"
30.2mm
None, self-powered
Output
Magnetically Isolated Solid State Switch, N.O.
Switch Rating
0.3 A @ 135 VAC or VDC, no polarity
Off State Leakage
None
Response Time
<200 milliseconds
Set point Range
1.5–150A (solid core)
2.8–150A (split core)
Set Point
Over/Under: ±15% of load
Underload: –15% of load
Hysteresis
5% of set point
Maximum Current
150A continuous
500A for 6 seconds
1,000A for 1 second
Isolation Voltage
UL Listed to 1,270 VAC
Tested to 5,000 VAC
Frequency Range
6–100Hz
LED Indicators
Two, for switch and calibration status
Sensing Aperture
0.75" (19mm) diameter (solid core)
0.85" (21.5mm) square (split core)
Case
UL 94V-O Flammability Rated
Environmental
–58 to149°F (–50 to 65°C)
0–95% RH, non-condensing
Approvals
UL, ULC, CE
LED LED
3.044"
77.3mm
Solid Core
2.433"
61.8mm
0.75"
19mm dia.
2.18"
55.4mm
0.967"
24.56mm
3.53"
89.7mm
0.931"
23.7mm
Power Requirement
LED
LED
0.17"
4.5mm dia.
Typical of 2
Need an interposing relay? See the new PowerBASE Relay on page 13.
0.6"
15mm
3.08"
78mm
ORDERING INFORMATION
MODEL
SET POINT
CASE
Sentry 500
Over/Under, ±15% of load Solid Core
Sentry SC500
Over/Under, ±15% of load Split Core
Sentry 500-U
Underload, –15% of load
Solid Core
Sentry SC500-U
Underload, –15% of load
Split Core
Enercorp instruments ltd
(800) 363-7267
info@enercorp.com
Rev 1.0-02/00
9
SENTRY 250 Series
Current Operated Switches
The Sentry 250 Series Current Switches
monitor up to 250 amps AC and provide
an AC/DC switch with either a fixed set
point (go/no-go) or an adjustable set
point. They offer proven reliability and
solid performance in both solid core and
split core configurations.
FEATURES
Reliability
Field-proven in hundreds of thousands of installations since 1982.
Solid performance even in rooftop environments. Backed by five-year
warranty.
Convenience
Compact size, built-in mounting bracket, and universal output mean
that installation is simple, fast and secure. You save money and avoid
callbacks. The split core version simplifies retrofits.
“Smart” LED
Easily adjust set point and verify operation even before system
hookup. (See Ordering Information for availability.)
Self-Powered
Cuts installation and operating costs.
HVAC Controller
APPLICATIONS
NOT REQUIRED!
FAN ON
2nd Conduit, Wire, DP Switch, Pressure Tubing, Pipe Fitter, etc.
❙❙ Monitor fan and pump status
❙❙ Monitor heating elements
DO
DI
Digital Out
Digital In
❙❙ Monitor lighting circuits
❙❙ Verify status of facility or
equipment power
L
I
N
E
AMPS
❙❙ Direct control of light loads,
such as lamps and relays
Perfect
Match for
Automation
Systems
Fan or Pump
Starter
Motor
Startup
Inrush
Normal Operation
Belt or
Coupling
Breaks
Motor Off
TIME
CONNECTIONS
R
SmartLED
Setpoint
1
Output
2
1
Output
2
Typical of 250/SC250
No LED on 245/SC245
Typical of 225/SC225
Enercorp instruments
(800) 363-7267
www.enercorp.com
10
Rev 1.0-02/00
NOTES
• Terminals are #6 screws.
• Solid state AC/DC swtich is not polarity sensitive.
• Normally open contact shown.
Normally closed is similar.
SENTRY 250 Series
Current Operated Switches
SPECIFICATIONS
Split Core
2.4"
61mm
0.22"
5.7mm
Power Requirement
None, self-powered
Output
Magnetically Isolated Solid State Switch
Switch Rating
N.O. versions: 0.3A @ 135 VAC or VDC
N.C. version:s 0.2A @ 135 VAC or VDC
Not polarity sensitive
Off State Leakage
None
Response Time
<120 milliseconds
Set Point Range
See Ordering Information
Hysteresis
5% of set point
2.25"
57.2mm
0.857"
21.7mm
0.854"
21.7mm
3.53"
89.7mm
Max Current
0.188"
4.5mm dia.
Typical of 2
1.190"
30.2mm
LED POT
3.044"
77.3mm
Solid Core
225/SC225
Other models
1 Sec
500A
400A
1,000A
1,000A
Isolation Voltage
UL Listed to 1,270 VAC, tested to 5kV
6–100Hz
Sensing aperture
0.75" (19mm) diameter (solid core)
0.85" (21.5mm) square (split core)
Case
UL 94V-O Flammability Rated
Environmental
–58 to149°F (–50 to 65°C)
0–95% RH, non-condensing
Approvals
UL, ULC, CE
2.18"
55.4mm
0.967"
24.56mm
OUTPUT TABLE
3.53"
89.7mm
0.931"
23.7mm
6 Sec
250A
150A
Frequency Range
2.433"
61.8mm
0.75"
19mm dia.
Continuous
POT
0.17"
4.5mm dia.
Typical of 2
LED
0.6"
15mm
CONDITION
SMART LED
N.O. SWITCH
N.C. SWITCH
No Current Flowing
Off
Open
Closed
Current Below Set Point
Slow Flash (2 Sec)
Open
Closed
Current Above Set Point
Fast Flash (0.5 Sec)
Closed
Open
3.08"
78mm
Need an interposing relay? See the new PowerBASE Relay on page 13.
ORDERING INFORMATION
MODEL
SET POINT
RANGE
N.O./
N.C.
LED CASE
Sentry 225
Fixed, 1A
N.O.
No
Solid Core
Sentry 245
1–150A
N.O.
No
Solid Core
Sentry 250
1–150A
N.O.
Yes Solid Core
Sentry SC225
Fixed, 1.5A
N.O.
No
Split Core
Sentry SC245
1.5–150A
N.O.
No
Split Core
Sentry SC250
1.5–150A
N.O.
Yes Split Core
Sentry SC250-NC 1.5–150A
N.C.
Yes Split Core
Enercorp instruments ltd
(800) 363-7267
info@enercorp.com
Rev 1.0-02/00
11
SENTRY HD100 Series
Current Operated High Power AC Switch
Sentry HD100 Current Switches will directly control an AC power
load up to 15A at 120VAC or 10A at 240VAC. The switch trips
when the sensed AC current exceeds the adjustable set point.
It is self-powered and available with either a normally open or a
normally closed switch.
FEATURES
SPECIFICATIONS
Switches 15A
Directly control AC loads.
Power Requirement
None, self-powered
Output
Isolated Solid State Relay
One-piece Interlock Solution
Greatly simplify control logic.
Switch Rating
15A at 120VAC, 10A at
240VAC (mounted to
1 sq. ft. sheet metal)
No polarity
Reliability
Field-proven. Five-year warranty.
POT
LED
0.55"
14mm
dia.
2.5"
63.5mm
Jumper Pins
0.95"
24.1mm
Aluminum Heat Sink
3.3"
83.8mm
0.92"
23.4mm
1.2"
31mm
0.17"
4.5mm dia.
Typical of 2
0.47"
12mm
2.75"
69.9mm
Off State Leakage . . . 0.0 mA (HD100)
2.3 mA (HD100-NC)
Response Time
10 to 230 milliseconds
Set Point Range
1–6, 6–40, 40–175A,
jumper selectable
Hysteresis
0.01A, 0.1A, 0.5A
(at low, mid, high ranges)
Isolation Voltage
UL Listed to 1,270 VAC
Tested to 5,000 VAC
Frequency Range
6–100Hz
Sensing Aperture
0.55" (19mm) diameter
Case
UL 94V-O Flammability
Rated
Environmental
–58 to149°F (–50 to 65°C)
0-95% RH, non-condensing
Approvals
UL, ULC, CE
CONNECTIONS
MAXIMUM AC CURRENT
Setpoint
Output
Range Jumper
R
None
LOW MID HIGH SmartLED
Typical of HD100
HD100-NC is similar
NOTES
• Terminals are #6 screws.
• Solid State AC Switch is not polarity sensitive.
• Normally open contacts shown. Normally closed is similar.
ORDERING INFORMATION
Rev 1.0-02/00
MAX.
CONT.
MAX.
SEC.
MAX.
1 SEC.
1–6A
None
200A
400A
600A
6–40A
Mid
150A
500A
800A
40–175A
High
210A
800A
1200A
OUTPUT TABLE
SET POINT RANGE
N.O./
N.C. LED CASE
CONDITION
LED
(HD100 only)
HD100
1–6, 6–40, 40–175A
N.O. Yes Solid Core
No Current Flowing
Off
N.C. No Solid Core
Current Below Set Point Slow Flash
(2 Sec)
Current Above Set Point Fast Flash
(0.5 Sec)
Enercorp instruments ltd
(800) 363-7267
12
JUMPER
MODEL
HD100-NC 1–6, 6–40, 40–175A
www.enercorp.com
RANGE
HD100 HD100-NC
SWITCH SWITCH
Open
Closed
Open
Closed
Closed Open
SENTRY PBR Series
Power Base Relay
FEATURES
Eliminate Relay Panels
Relay/sensor combo installs as one item—
save wire, labor and money.
Modular
Mix and match your relay and sensor in
over 60 combinations. Available factory
assembled or stand-alone for field assembly.
APPLICATION NOTE
Problem
CONNECTIONS
HVAC Controller
Fan=OFF
Starter
(Digital Out)
1 Amp @
DO 24 VAC
Mismatch?
Use your PowerBASE!
R
120 VAC
Starter Control Circuit
(Digital In)
or
(Analog In)
DO
DI
AI
C
Contacts
10A Resistive @ 250 VAC,
8A Inductive @ 250 VAC
Sentry Current Switch
or Transducer.
Over 20 models!
Coils
12U: 12 VAC/DC +/-30%, 18mA
24U: 24 VAC/DC+/-30%, 10mA
PowerBASE Command
Relay, 10 Amp Form C
(SPDT)
Dimensions
2.65" W x 1.5" D x 0.9" H,
4.5" Base
Compatible
Sentry top terminal models
except Sentry 200-3 and 200-4
Case
UL 94 flammability rated
thermoplastic
Environmental
–20 to 50°C, 0-95% RH,
non-condensing
Listing
UL Listed
Fan or Pump
Motor
Fan = ON
(Digital Out)
Relay
Status
NOTES
• Deadfront captive screw
terminals
• 12-22 AWG solid or stranded.
• No polarity
SPECIFICATIONS
Starter
HVAC Controller
12VAC/DC or 24 VAC/DC Coil
See Specifications
Motor
Solution
P
O
W
E
R
See Specifications
for contact ratings
Fan or Pump
10 Amps @
120 VAC
Control & Monitor
200 HP
PowerBASE + Sentry = Reliablity
Energy Management System digital outputs
generally can’t “pull in” a motor starter directly.
That normally requires an interposing relay.
The PowerBASE is an interposing relay that
easily connects to Sentry sensors. Most
electricians consider a sensor/PowerBASE
combo to be a single installed item and charge
accordingly. Its compact size makes it an easy fit
in crowded motor starter enclosures, eliminating
the need for expensive relay panels.
The PowerBASE provides good control, isolation
and lower cost.
ORDERING INFORMATION
MODEL
COIL VOLTAGE
PBR-10C-12U
12 VAC/DC
PBR-10C-24U
24 VAC/DC
Direct mechanical mount for the following Sentry products:
• All Sentry 100 Series transducers (pages 4-5)
• All Sentry 200-0/-1/-2 transducers (pages 4-5)
• All Sentry 225/245/250 Series switches (pages 10-11)
• All Sentry 500 Series switches (pages 8-9)
Enercorp instruments ltd.
(800) 363-7267
info@enercorp.com
Rev 1.0-02/00
13
SENTRY KW2000 and
KWN2000 Series
AutoPhase kW/kWh Transducers
The KW2000 Power Transducers provide an analog output signal
proportional to power demand (kW), plus a pulsed output for
totalizing energy consumption (kWh). The KWN2000 Series
Tranducers connect directly to either a Johnson Controls Metasys®
N2 network or a Modbus network. The KWN2000 units provide
values for kW/kWh plus several other power quality parameters.
FEATURES
Accurate
Advanced microprocessor running at 5
MIPS provides high-speed sampling, true
RMS calculations and meter grade digital
accuracy (0.5% full scale).
Fast Installation
Patented AutoPhase Technology corrects
common wiring errors such as CT reversal
and phase mismatch, and can save hours of
field labor.
Input Flexibility
Accepts Neilsen-Kuljian ProteCT 0.333V
safe CTs, eliminating the need for shorting
blocks. Also accepts traditional 5A CTs. No
separate potential transformers (voltage
transformers) are required for monitoring up
to 600VAC.
Network Integration
The network versions are designed for
direct connection to a network bus. Models
are available for Johnson Controls Metasys®
N2 networks and Modbus networks.
CONNECTIONS
1φ Single Phase
L
I
N
E
Hot
Hot
Neutral
Neutral
C.T.2
MODE
STEP
259.6
873 079.01
STORE CLEAR
BRN
ORG
WHT
YEL
C.T.3
GRN
3φ Three Phase
L
O
A
D
Aφ
A L
Bφ
B N
C E
I
Cφ
Neutral
if present
Neutral
if present
KW:
KWH:
C.T.1
C.T.2
MODE
STEP
259.6
873 079.01
STORE CLEAR
BRN
ORG
YEL
WHT
C.T.3
GRN
See Output Wiring, below
Output Wiring
Standard Output
❙❙ Facility and equipment power monitoring
Network Output
❙❙ Sub-metering
❙❙ Performance contracting
KW Pulse Output
System Alarm
Closes on Alarm
Current Loop Output
Observe Polarity
Voltage Output
Observe Polarity
www.enercorp.com
14
Rev 1.0-02/00
ADDRESS
KWH
PULSES
SYSTEM
ALARM
+ 4-20MA
SELF- POWER
+ 0-5VDC
or
- 0-10 VDC
5V
ON
Enercorp instruments ltd
(800) 363-7267
Ground
if posstible
See Output Wiring, below
APPLICATIONS
❙❙ Energy management
KW:
KWH:
C.T.1
L
O
A
D
K
W
O
E
M
A
N
D
10V
OFF
NETWORK
Network Connection
Follow standard network
wiring practices
RX
TX
GND
Ground
if posstible
SENTRY KW2000 and KWN2000 Series
AutoPhase kW/kWh Transducers
ORDERING INFORMATION
MODEL
CURRENT PROGRAMHOUSING INPUT
MING
DISPLAY
Standard Output Models
KW2012V
KW2013V
KW2112V
KW2113V
KW2213V
KW2012A
KW2013A
KW2112A
KW2113A
KW2213A
Module
Module
NEMA 1
NEMA 1
NEMA 1
Module
Module
NEMA 1
NEMA 1
NEMA 1
Network Models*
KWN2012V-xx Module
KWN2013V-xx Module
KWN2112V-xx NEMA 1
KWN2113V-xx NEMA 1
KWN2213V-xx NEMA 1
KWN2012A-xx
KWN2013A-xx
KWN2112A-xx
KWN2113A-xx
KWN2213A-xx
Module
Module
NEMA 1
NEMA 1
NEMA 1
ProteCT
ProteCT
ProteCT
ProteCT
ProteCT
5A CT
5A CT
5A CT
5A CT
5A CT
ProteCT
ProteCT
ProteCT
ProteCT
ProteCT
5A CT
5A CT
5A CT
5A CT
5A CT
DIP Switch
Keypad
DIP Switch
Keypad
Keypad on
Module
None
LCD
None
LCD
LCD on
Hinged
Cover
DIP Switch None
Keypad
LCD
DIP Switch None
Keypad
LCD
Keypad on LCD on
Module
Hinged
Cover
DIP Switch
Keypad
DIP Switch
Keypad
Keypad on
Module
None
LCD
None
LCD
LCD on
Hinged
Cover
DIP Switch None
Keypad
LCD
DIP Switch None
Keypad
LCD
Keypad on LCD on
Module
Hinged
Cover
SPECIFICATIONS
Power Requirement
None, powered from monitored line.
Accuracy
0.5% FS, True RMS power
Voltage Range . . . . .
120–600V (Std.), 208-600V (Network), auto-ranging.
Up to 35KV with optional potential transformers.
Contact Neilsen-Kuljian for 120V Network version.
Amperage Range
5–1500 Amps with ProteCT 0.333V CTs
50–4000 Amps with 5A output CTs
Frequency Range
50–60 Hz
Isolation Voltage
3,700 VAC
Built-in Fuse Rating
600 VAC, 0.5A (no external fuses required)
Environmental
0/122°F (–18/50°C), 0–95% RH, non-condensing
Dimensions
Module: 9" H x 6.5 W x 2.6" D (23 x 16.5 x 6.5 cm)
NEMA1: 10" H x 10" W x 4" D (26 x 25 x 10 cm)
Connections
Voltage: 12" leads, #18 AWG
Current Inputs
and All Outputs:
Captive screw terminals accept 14-22 AWG wire
LCD Display
Two lines, 16 characters
OUTPUTS, STANDARD MODELS
Analog Outputs
Both available at all times (standard models)
kW:
0–5 VDC or 0–10 VDC, user selectable,
self-powered, opto-isolated,
10 kΩ minimum load impedance
kW:
4–20mA, self-powered 24VDC loop,
opto-isolated, 500Ω maximum load
Discrete Outputs
Both available at all times (standard models)
System Alarm
Solid state N.O. contact, 100mA@30V AC/DC,
75, 80, 85, 95% under voltage set points
kWh:
Solid state contact, 100mA@30V AC/DC
Ranges: 0.01,0.1,1.0,10.0 kWh per pulse
Communication
RS232 serial data stream (standard models),
consult factory for details
*Replace “xx” with either “N2”or “MOD” as shown:
xx
Network
N2
Johnson Controls Metasys® N2
MOD
Modbus network
OUTPUTS, NETWORK MODELS
Note: Please indicate CT values with order.
Amperage
Voltage
KW
φA
φB
φC TOTAL
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
KWH
KVA
KVAH
Power Factor
Frequency
CT Value
MODBUS®
•
•
•
•
•
Contact us for availability
of other network protocols.
•
Enercorp instruments ltd
(800) 363-7267
info@enercorp.com
Rev 1.0-02/00
15
ProteCT Series
Current Transformers with
Voltage Output
Split core current transformers with low voltage output are safer
for installers and technicians. Designed for signal input to the
Sentry KW2000 and KWN2000 Series Power Transducers
(pages 14-15, “V” models).
FEATURES
Low Voltage Output
Safer to operate, even with output wiring disconnected.
Shorting blocks are not required.
Split Core
Saves installation time and costs.
SPECIFICATIONS
APPLICATIONS
Power Supply
None required, self-powered
❙❙ Energy Management
Current Ranges
See Ordering Information
❙❙ Ammeters
Output Signal
0–0.333 VAC
❙❙ Data Loggers
Frequency
50–400 Hz
Insulation Class
0.6 kV BIL
Accuracy
0.5% FS
Phase Shift
<1°
Environmental
0 to 122°F (–18 to 50°C)
DIMENSIONS IN INCHES (mm)
P075
P125
P200
Aperture W
0.75 (19)
1.25 (32)
2.0 (51)
Aperture H
0.75 (19)
1.25 (32)
2.0 (51)
Height
2.1 (53)
3.25 (83)
5.0 (127)
Width
2.1 (53)
3.25 (83)
4.75 (121)
Depth
0.61 (15)
1.0 (25)
1.2 (30)
ORDERING INFORMATION
Enercorp instruments ltd
(800) 363-7267
www.enercorp.com
16
Rev 1.0-02/00
MODEL
RANGE
MODEL
RANGE
MODEL
RANGE
P075-005
0-5 Amps
P125-100
0–100 Amps
P200-600
0–600 Amps
P075-015
0–15 Amps
P125-150
0–150 Amps
P200-800
0–800 Amps
P075-030
0–30 Amps
P125-200
0–200 Amps
P200-1000 0–1000 Amps
P075-050
0–50 Amps
P125-250
0–250 Amps
P200-1200 0–1200 Amps
P075-070
0–70 Amps
P125-300
0–300 Amps
P200-1500 0–1500 Amps
P075-100
0–100 Amps
P125-400
0–400 Amps
P075-150
0–150 Amps
P125-600
0–600 Amps
500, 600, 601 CT Series
Current Transformers with 5A Output
Robust split core current transofrmers are
available in a wide array of ranges and
sizes, many of which are not listed here.
Contact the factory for further information.
FEATURES
SPECIFICATIONS
5 Amp Secondary
Compatible with KW meters and ammeters.
Split Core
Lowest labor cost.
APPLICATIONS
❙❙ Energy Management
❙❙ Ammeters
ORDERING INFORMATION
APERTURE SIZE
600T-xxx
2.0 x 5.5" (51 x 140 mm)
601T-xxx
4.5 x 4.5" (114 x 114 mm)
500T-041x071-xxx
4.1 x 7.1" (104 x 180 mm)
500T-041x113-xxx
4.1 x 11.3" (104 x 287 mm)
Wire Size, Copper AWG
VA
Ohms
18
1
0.04
2
0.08
3
600
Aperture W
Aperture H
Height
Width
Depth
2.0 (51)
5.5 (140)
7.75 (197)
4.25 (108)
1.13 (29)
500T
601
-041x071
4.5 (114)
4.5 (114)
6.75 (171)
6.75 (171)
1.13 (29)
4.1 (104)
7.1 (180)
10.9 (277)
7.3 (185)
1.63 (41)
-041x113
4.1 (104)
11.3 (287)
15.4 (391)
7.3 (185)
1.63 (41)
RANGE AND ACCURACY
Maximum Lead Length in Inches:
CT Burden
None required, self-powered
See Range and Accuracy table
0–5A (AC)
50–400 Hz
0.6 kV BIL, 10 kV BIL full wave
ANSI rated, see Range and Accuracy table
See Range and Accuracy table
2.0 @ 30°C amb.
–40 to 133°F (–40 to 55°C)
DIMENSIONS IN INCHES (mm)
For final model number, replace "xxx" with 3-digit
ratio code from the Range and Accuracy Table.
MODEL
Power Supply
Current Ranges
Output Signal
Frequency
Insulation Class
Accuracy
Allowable Burden
Rating Factor
Environmental
16
14
12
10
5
8
12
20
31
9
15
25
39
62
0.12
14
23
37
59
93
4
0.16
19
30
49
78
124
5
0.20
24
38
61
98
155
7.5
0.30
36
57
92
146
233
10
0.40
47
76
123
195
310
15
0.60
71
113
184
293
465
20
0.80
95
151
245
390
620
30
1.20
142
227
368
585
930
40
1.60
189
302
491
780 1,240
50
2.00
237
378
613
976 1,550
Notes: Burden is the total oposition to flow of current on
a transformer secondary. It is generally expressed as VA.
Use the table above to convert VA into ohms for 5A output CTs. Lead length is the total wire run (out and back).
CT
RATIO
500T
RATIO
600
601
-041x071
-041x113
CODE Accuracy VA Accuracy VA Accuracy VA Accuracy VA
300:5
400:5
500:5
600:5
750:5
800:5
1000:5
1200:5
1500:5
1600:5
2000:5
2500:5
3000:5
4000:5
5000:5
6000:5
8000:5
-301
-401
-501
-601
-701
-801
-102
-122
-152
-162
-202
-252
-302
-402
-502
-602
-802
1%
1%
1%
1.5
2.0
2.5
1%
1%
1%
1.5
2.0
2.5
1%
1%
1%
1%
1%
1%
5.0
7.5
15.0
20.0
20.0
30.0
1%
1%
1%
1%
1%
1%
5.0
7.5
15.0
20.0
20.0
30.0
5%
1.5
3%
2.5
1%
2.5
1%
4.0
1%
5.0
1%
5.0
1%
7.5
1% 10.0
1% 12.5
5%
1.5
3%
2.5
1%
2.5
1%
4.0
1%
5.0
1%
5.0
1%
7.5
1% 10.0
1% 12.5
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
15.0
25.0
25.0
25.0
15.0
25.0
25.0
25.0
30.0
40.0
40.0
Enercorp instruments ltd
(800) 363-7267
info@enercorp.com
Rev 1.0-02/00
17
2, 5, 7, 8 Series
Current Transformers with
5A Output
Economical solid core current transformers
are available in wide array of ranges and
sizes, many of which are not listed here.
Contact Neilsen-Kuljian for further information.
FEATURES
5 Amp Secondary
Compatible with KW meters and ammeters.
Solid Core
Low material cost.
Two Physical Styles
Round for switchgear, square for panels.
APPLICATIONS
❙❙ Ammeters
ORDERING INFORMATION
For final model number, replace "xxx" with 3-digit
ratio code from the Range and Accuracy table.
MODEL
APERTURE DIA.
2RLxxx
1.13” (28.7mm) Doughnut type
2SFTxxx
5RLxxx
5SFTxxx
7RLxxx
7SFTxxx
8RLxxx
1.13” (28.7mm)
1.56” (39.6mm)
1.56” (39.6mm)
2.50” (63.5mm)
2.50” (63.5mm)
3.25” (82.6mm)
CASE
Square with mounting flange
Doughnut type
Square with mounting flange
Doughnut type
Square with mounting flange
Doughnut type
3.25” (82.6mm) Square with mounting flange
Enercorp instruments ltd
(800) 363-7267
www.enercorp.com
18
Rev 1.0-02/00
Power Supply
Current Ranges
Output Signal
Frequency
Insulation Class
Accuracy
Allowable Burden
Rating Factor
Environmental
None required, self powered
See Range and Accuracy table
0–5A (AC)
50–400 Hz
0.6 kV BIL, 10 kV BIL full wave
ANSI Rated, see Range and Accuracy table
See Range and Accuracy table
2.0 @ 30°C amb.
–40 to 133°F (–40 to 55°C)
DIMENSIONS IN INCHES (mm)
Round RL Series with Lead Wires:
❙❙ Energy management
8SFTxxx
SPECIFICATIONS
Aperture Diameter
Outside Diameter
Depth
Lead length
2RL
5RL
7RL
8RL
1.13 (28.7)
2.43 (61.7)
0.96 (24.4)
24 (610)
1.56 (39.6)
3.56 (90.4)
1.10 (27.9)
24 (610)
2.50 (63.5)
4.56 (115.8)
1.10 (27.9)
24 (610)
3.25 (82.6)
5.73 (145.5)
1.15 (29.2)
24 (610)
Square SFT Series with Mounting Flange and Terminals:
Aperture Diameter
Height
Width
Depth
2SFT
5SFT
7SFT
8SFT
1.13 (28.7)
2.67 (67.8)
2.33 (59.2)
1.88 (47.8)
1.56 (39.6)
3.65 (92.7)
3.53 (89.7)
2.15 (54.6)
2.50 (63.5)
4.69 (119.1)
4.56 (115.8)
2.13 (54.1)
3.25 (82.6)
5.73 (145.5)
5.73 (145.5)
2.91 (73.9)
RANGE AND ACCURACY
CT
RATIO
RATIO
CODE
MODEL 2
Accuracy
50:5
75:5
100:5
150:5
200:5
250:5
300:5
400:5
500:5
600:5
750:5
800:5
1000:5
1200:5
1500:5
1600:5
2000:5
2500:5
500
750
101
151
201
251
301
401
501
601
701
801
102
122
152
162
202
252
VA
3%
1.0
2%
2.0
1%
2.5
1%
4.0
1%
5.0
1%
7.5
1% 10.0
MODEL 5
Accuracy
VA
2%
2%
2%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
0.75
1.25
2.25
5.0
5.0
12.5
12.5
12.5
25.0
25.0
25.0
30.0
35.0
40.0
MODEL 7
Accuracy
2%
2%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
VA
0.5
1.0
2.0
2.5
5.0
5.0
5.0
12.5
15.0
25.0
30.0
35.0
35.0
40.0
50.0
50.0
MODEL 8
Accuracy
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
1%
VA
5.0
7.5
15.0
25.0
35.0
50.0
50.0
60.0
75.0
75.0
90.0
100.0
120.0
50.0
Other Products
We offer many more products than will fit in this catalog.
Please call or email for detailed data sheets.
Here is a quick tour.
Current transformers for up to
34,500 VAC circuits. Indoor
models shown. Outdoor models
also available.
Voltage transformers for up to
34,500 VAC Circuits. Single and
three phase versions with 120
VAC secondaries.
Three phase current transformers
and summing current transformers.
Voltage transducers with 4-20mA output.
Shorting blocks for CTs.
Our AutoPhase™ power transducer
eliminates the need for shorting blocks.
Drawings are not to scale.
DIN rail adapters allow Neilsen-Kuljian
switches and transducers to be
mounted on DIN rail.
Enercorp instruments ltd
(800) 363-7267
info@enercorp.com
Rev 1.0-02/00
19
Fan and Pump Status
Reliable, Economical Electronic Fan and Pump Status
Concept: When fans or pumps are
moving air or water, they draw a typical
amperage load. If the belt or coupling
breaks, the amperage drops to about
half of the normal load. Use a Sentry
Sensor and your automation system to
monitor this change.
Benefits: Solid-state Sentry
sensors won’t wear out or drift like
electromechanical pressure switches,
resulting in fewer callbacks. Less
conduit means less electrician time.
And no pipe taps means less pipefitter
time and the elimination of a potential
leak source.
Select the right sensor
for your project:
❙❙ Sentry 500 SmartSensors™ calibrate
themselves automatically. (p. 8)
❙❙ Sentry 250 Switches require a few
turns of a potentiometer and a glance
at the SmartLED™ (p. 10).
❙❙ Sentry transducers provide an analog
output signal, allowing for software
alarm set points and real time current
monitoring. (pp. 4–7).
HVAC Controller
NOT REQUIRED!
FAN ON
DO
DI
AMPS
L
I
N
E
2nd Conduit, Wire, DP Switch, Pressure Tubing, Pipe Fitter, etc.
Digital Out
Digital In
Perfect
Match for
Automation
Systems
Fan or Pump
Starter
Motor
Startup
Inrush
Normal Operation
Belt or
Coupling
Breaks
Motor Off
TIME
Enercorp instruments ltd
(800) 363-7267
www.enercorp.com
Rev. 1.0-02/00