Bently Nevada 3500/82 Data sheet

Stator Insulation Monitoring System

Bently Nevada* Asset Condition Monitoring

Description

The Bently Nevada* Stator Insulation Monitoring System uses state of the art
technologies to measure the leakage current of motors sized up to 7.5 kV and
1000 Amps. The measurements are made while the motor is online and the
system processes the measured data in real time to determine the condition of
the stator insulation in the motor. The system consists of a 9-channel 3500/82
monitor that accepts inputs from the 350820 High Sensitivity Current
Transformer (HSCT), 350822 High Voltage Sensors (HVS), and 4-20 mA process
signals corresponding to motor temperature measurements. The 3500/82
processed data and results can be displayed on the 3500/94 Display. The user
can configure the 3500/82 using the 3500 Rack Configuration Software to
perform the following functions:

 Display instantaneous stator leakage current on each phase of the

motor.

 Display compensated dissipation factor and change in dissipation factor

Note: The 3500/82 monitor should not be used for machine protection.

The 3500/82 can accept 3 HSCT, 3 HVS, and 3 4-20mA process inputs from
stator RTD temperature measurements. Since the interface modules are
capable of driving long field cables, the monitor can be situated in a control or
instrumentation room up to 330 meters (1,000 feet) away from the motor or the
interface modules.

The 3500/82 is featured with measurement trending by comparing the current
measurements to any historical data taken in the last 10 years (if the historical
data is available). The time window for comparison is user configurable.

The 3500/82 monitor has eight buffered outputs for diagnostic purposes, 3 each
HVS and HSCT values for each of those corresponding inputs, an average
temperature from the temperature inputs, and a synchronization phase pulse
reference signal.

from a given reference point.

 Display motor stator temperature and average temperature.
 Display line voltage and frequency data values.
 Retrieve historic data stored on board the monitor for data analysis.
 Set alarm levels for annunciation.
 Configure the temperature range and time period for learn and extend

modes for temperature learning, and view the current learning state.

 View the number of temperature samples, vs. operating temperatures,

that builds the learning curve used for temperature compensation.

Specifications and Ordering Information

Part Number 323735-01

Rev. C (07/14)

Page 1 of 13

Monitor Specifications

Parameters are specified from +20 °C to +30 °C (+68 °F
to +86 °F) and at 50/60 Hz unless otherwise indicated.

Note: Operation outside these specified limits may result in a larger
variation in readings from what is listed below, or a loss of machine
monitoring all together.

Inputs

Input Signals

Accepts 3 HSCT, 3 HVS, and 3 4­20mA temperature inputs.

Input
Impedance

150 kΩ // 1nF (for HSCT & HVS)
200 Ω (for 4-20 mA temperature)

Input
Frequency
Range

40 to 70 Hz

Power
Consumption
(not including
external power
supply)

15 watts, typical

HSCT External
Power
Required

+24V ± 2% @ 0.75 A Nominal Over
temperature

Outputs

Front Panel
LEDS

OK LED

Indicates when the system is
operating properly.

TX/RX LED

Indicates when the 3500/82 is
communicating with other modules
in the 3500 rack.

Bypass LED

Indicates when the 3500/82 is in
Bypass Mode.

Buffered Outputs

The front of the monitor has eight
coaxial BNC connectors for each of
the HVS and HSCT outputs and
average temperature output, and a
phase reference pulse (Sync). Each
connector is short-circuit protected.
The output from all 8 BNCs is
voltage proportional to the input
signals.

Output
Impedance

499Ω ±1%

Output Range
HVS and HSCT
Channels (6
BNCs)

Dynamic: 1.6 to 10.4V, ±5%.
Bias: 6V ±5%.

Output Range
Average
Temperature
Channel (1
BNC)

2.0 to 10.0V, ±5%, for -40 to 200 °C
(default, but can be user
configurable)

Output Range
Sync (1 BNC)

Digital Pulse: 0 to 10.0V, ±5%.

Sensor Specifications

Parameters are specified from +20 °C to +30 °C (+68 °F
to +86 °F) and at 50/60 Hz unless otherwise indicated.

Note: Operation outside these specified limits may result in a larger
variation in readings from what is listed below, or a loss of machine
monitoring all together.

Sensitivity

HSCT Output
Sensitivity

3.3mV / mA nominal, each unit
marked with its specific sensitivity
±1%
Linearity: ±0.25%

Phase

Specifications and Ordering Information

Part Number 323735-01

Rev. C (07/14)

Page 2 of 13

6° nominal, each unit marked with
specific phase shift for that unit,
±0.5°.
Linearity: ±0.5°
Temperature impact on phase: +2°
at minimum operating temperature,

-1° at maximum operating
temperature.

Current

1.4 A peak to peak (sine wave) full­scale.

HVS Output

0.76mV / V ±5%
8 kVrms full-scale (line to neutral)

Interface Module Outputs

HSCT Interface
Module Output

Gain: 3V/V

HVS Interface
Module Output

Gain: 0.625V/V with 77 kΩ source
impedance

Temperature
Interface
Module Output

66.6 µA / °C ±2%. (default)

-40 to 200

°C full-scale (user

configurable)

Signal Conditioning in 3500/82 Monitor

HVS and HSCT

Overall
Frequency
Response

Direct

1 Hz to 8.5 kHz ±3.0 dB
User configurable

1X Filter

50 or 60 Hz
User configurable

Overall Accuracy
Amplitude

±1% of full-scale, Typical

±2% of full-scale, Maximum

Phase

±1°, Typical
±2°, Maximum

Filter Quality
High-Pass

2-pole (40 dB per decade)

Low-Pass

2-pole (40 dB per decade

Overall
Accuracy

±1% of full-scale, Typical
±2% of full-scale, Maximum

Temperature

Overall
Frequency
Response

3 Hz -3.0 dB

Overall
Accuracy

±1% of full-scale, Typical.
±2% of full-scale, Maximum.

Filter Quality
Low-Pass

2-pole (40 dB per decade)

Overall
Accuracy

±1% of full-scale, Typical.
±3% of full-scale, Maximum.

System Alert/Alarm Setting

Alarm
Setpoints

The user can use software
configuration to set Alert levels for
each value measured by the
monitor and Alarm setpoints for any
values measured by the monitor.
Alarms are adjustable from 0 to
100% of full-scale for each
measured value.

Specifications and Ordering Information

Part Number 323735-01

Rev. C (07/14)

Page 3 of 13

Alarm Time
Delays

The user can program alarm delays
using software as follows:

Alert & Danger

From 1 to 60 seconds in 1 second
Intervals.

Note: Applies to temperature, voltage and current measurements.
The 3500/82 system Alert/Alarms are for annunciation only and
should not be used for machine protection.

Environmental Limits

Operating Temperature Range
Transducers &
Interface Modules

−20 °C to +70 °C
(-4 °F to +158 °F)

3500/82 Monitor

−30 °C to +65 °C
(-22 °F to +149 °F)

MTL and P+F
Barriers

−20 °C to +60 °C
(-4 °F to +140 °F)

Storage Temperature
Transducers /
Interface Modules

−40 °C to +85 °C
(-40 °F to +185 °F)

3500/82 Monitor

−40 °C to +85 °C
(-40 °F to +185 °F)

MTL Barriers

−40 °C to +80 °C
(-22 °F to +149 °F)

P+F Barriers

−25 °C to +70 °C
(-13 °F to +158 °F)

Shock Survivability
Transducers

100 g peak, maximum

Interface Modules

200 g peak, maximum

3500/82 Monitor

200 g peak, maximum

Relative
Humidity

95% non-condensing
(75% non-condensing for P+F
barriers)

Magnetic Field
Susceptibility

<500µV/gauss (50 gauss, 50-60Hz)

Transducers
Common Mode
Line Current

Up to 1,000A rms, nominal

Line Voltage

†

Up to 7.5kV

rms, nominal

†

Operating voltage less than 2kV has limitations from the HVS.

Physical

Monitor Module

Dimensions
(Height x Width x Depth)

241.3 mm x 24.4 mm x 241.8 mm
(9.50 in x 0.96 in x 9.52 in)

Weight

0.97 kg (2.14 lb.)

I/O Module

Dimensions
(Height x Width x Depth)

241.3 mm x 24.4 mm x 91.1 mm
(9.50 in x 0.96 in x 3.90 in)

Weight

0.41 kg (0.91 lb.)

Rack Space Requirements
Monitor Module

1 full-height front slot

I/O Module

1 full-height rear slot

HVS and HSCT Interface Modules
Dimensions
(Height x Width x Depth)

Specifications and Ordering Information

Part Number 323735-01

Rev. C (07/14)

Page 4 of 13

See Figures 2 & 3

Weight

0.21 kg (0.46 lb.)

Signal Input
Connector

2-pin circular Lemo (HVS)
3-pin circular Lemo (HSCT)

Power/Sig out
Connector

5-pin spring compression

HSCT
Overall Diameter

See Figure 4

Height

See Figure 4

Weight

4.2 kg (9.25 lb.)

Case Material

Aluminum

Connector

2-pin Mil-C- 26482

Polarity

Pin A = Positive Signal
Pin B = Negative Signal

Mounting

Bracket Mount

HVS
Dimensions
(Height x Width x Depth)

See Figure 6

Weight

1.7kg (3.7lbs)

Integral Cable

22 AWG twisted shielded pair

Case Material

Epoxy

Polarity

Pin A = Positive Signal
Pin B = Negative Signal

Mounting

Bracket Mount

Temperature Interface Module
Dimensions
(Height x Width x Depth)

See Figure 7

Weight

0.13 kg (0.28 lb.)

Mounting

DIN rail mount

Entity Parameters

The following parameters apply for both CSA-NRTL/C
and ATEX approvals.

HVS and HSCT Channel Approval Parameters

MSIM Circuit
Parameters

(PWR) = 28 V

V

max

= 60 mA

I

max

= 12 V

V

+/-SIG

= 10 mA

I

+/-SIG

(PWR) = 253 Ω

R

min

= 253 Ω

R

+/-SIG

Channel
Parameters
(entity)

(PWR) = 28 V

V

max

= 119 mA

I

max

(PWR) = 253 Ω

R

min

= 253 Ω

R

+/-SIG

Interface Module
Circuit
Parameters

(PWR) = 15 V

V

max

= 50 mA

I

max

= 12 V

V

+/-SIG

= 10 mA

I

+/-SIG

= 253 Ω

R

+/-SIG

Temperature Interface Module Approval
Parameters

MSIM Circuit
Parameters

= 15 V

V

SIG

Specifications and Ordering Information

Part Number 323735-01

Rev. C (07/14)

Page 5 of 13

I

= 20 mA

SIG

= 100 Ω

R

SIG

Channel
Parameters
(entity)

= 15 V

V

sig

= 20 mA

I

sig

= 100 Ω

R

SIG

Interface Module
Circuit
Parameters

(PWR) = 35 V

V

max

= 200 mA

I

max

= 12 V

V

SIG

= 20 mA

I

SIG

Compliance and Certifications

EMC

Standards:
EN 61000-6-2 Immunity for Industrial
Environments
EN 55011/CISPR 11 ISM Equipment
EN 61000-6-4 Emissions for Industrial
Environments

European Community Directives:
EMC Directive 2004/108/EC

Electrical Safety

Standards:
EN 61010-1

European Community Directives:
2006/95/EC Low Voltage

Hazardous Area Approvals (Sensors and
Interface Modules)

North America

CSA Zone 2 / Class I, Division 2
CSA Zone 0 / Class I, Division 1 (when installed
with barriers)

European/ATEX

ATEX Zone 0 (when installed with barriers)

For further certification and approvals information please visit the
following website:

www.ge-mcs.com/bently

Ordering Considerations

General

The 3500/82 monitor requires 50% more power than
other 3500 monitors. To prevent overloading the 3500
systems power budget on a full size rack, a blank slot
is recommended for each 3500/82 monitor installed.
3500/82 Stator Insulation Monitors added to an
existing 3500 Monitoring System, require the following
(or later) firmware and software versions:

3500/82 Firmware

Version 1.00, or later, for approvals
certification

3500/22M RIM
Firmware

Revision 1.70 or later

3500 Rack
Configuration
Software

Version 4.9 or later

Hazardous Area Approvals (3500/82 Monitor)

North America

CSA Zone 2 / Class I, Division 2

European/ATEX

No approvals, must be installed in a non-

hazardous area.

3500/93 System
Display Firmware

Version 3.0 or later

3500/94 VGA
Display Firmware

Version 3.0 or later

System 1™
Software

Version 6.0 or later

Specifications and Ordering Information

Part Number 323735-01

Rev. C (07/14)

Page 6 of 13

3500/91 &
3500/92

All Versions Supported

System
Components

The following hardware components are required for a
successful installation:

 Three (3) 350820 High Sensitivity Current

Transformers (HSCTs)

 Three (3) 350821 HSCT Interface Modules
 Three (3) 350825 HSCT Interface Cables
 A minimum of Two (2) 350822 High Voltage

Sensors (HVSs). Three (3) are recommended.

 One (1) 350823 High Voltage Sensor Interface

Module for each 350822 ordered.

 Three (3) barriers for each HSCT and HVS to be

installed. Applicable to Hazardous Area
installations only.

 One (1) 350824 RTD temperature convertor.

Three (3) are recommended.

 One (1) 3500/82 Stator Insulation Monitor with

corresponding I/O module.

 One (1) 181945 24 VDC 3.5A external power

supply for each 3500/82 monitor. Larger
power supplies can be used to power multiple
3500/82 monitors. Consult the input power
requirements when selecting a different
power supply.

Ordering Information

Monitor

3500/82–AXX–BXX-CXX

A: I/O Module Type

0 1 MSIM I/O Module with Internal

Terminations

B: External Power Supply Option

0 0 Not Provided
0 1 24Vdc, 3.5A DIN Rail Mount

C: Agency Approval Option

0 0 None
0 1 CSA (Class 1, Zone 2 / Div 2)

HSCT

350820–AXX-BXX

A: Inner Diameter

0 1 Up to 7.5 kV*

Operating voltage less than 2kV has limitations from the HVS.

*

B: Agency Approval Option

0 0 No Approvals
0 4 CSA C/US Zone 2 / Div 2
0 5 Multi-Approvals Zone 0 / Div 1

HSCT Interface Module

350821–AXX-BXX

A: Mount configuration

0 0 Panel Mount
0 1 DIN Mount

B: Agency Approval Option

0 0 No Approvals
0 4 CSA C/US Zone 2 / Div 2
0 5 Multi-Approvals Zone 0 / Div 1

HSCT Cable

350825-AXX

A: Cable Length

0 5 5 meters

HVS

350822–AXX-BXX

A: Voltage Divider

0 1 15 kV Full Scale Range

B: Agency Approval Option

0 4 CSA C/US Zone 2 / Div 2
0 5 Multi-Approvals Zone 0 / Div 1

HVS Interface Module

350823-AXX-BXX

A: Mount configuration

0 0 Panel Mount
0 1 DIN Mount

B: Agency Approval Option

0 0 No Approvals
0 4 CSA C/US Zone 2 / Div 2
0 5 Multi-Approvals Zone 0 / Div 1

Temperature Interface Module

350824–AXX

A: Preconfigured Temperature Range & Sensor Type

0 1 -40 °C to +200 °C

Specifications and Ordering Information

Part Number 323735-01

Rev. C (07/14)

Page 7 of 13

(-40 °F to +392 °F)
3-wire 100Ω PT RTD

Barriers

Barriers are required to protect the HSCT and HVS when
installing them in Zone 0 hazardous areas. Barriers are
installed between the 3500/82 monitor and the HSCT/HVS
interface modules. There are 3 barriers required for each
sensor, 1 barrier for power, and 2 for signal (SIG + and SIG -).

MTL Barriers

100M1770

MTL 7715+ safety barrier for signal

100M1771

MTL 7728P+ safety barrier for
power

For further information on these MTL barriers, please visit the
following website:

http://www.mtl-inst.com/product/mtl7700_series_barriers/

Pepperl+Fuchs Barriers

100M5332

P+F Z715+ safety barrier for signal

100M5333

P+F Z779.H safety barrier for power

For further information on these P+F barriers, please visit the
following website:

http://www.pepperl-fuchs.com/global/en/classid_2414.htm

Spares

100M2907-01

3500/82 Stator Insulation Monitor

324197-01

MSIM I/O Module

181945

28 Vdc 3.5A Power Supply (Din Rail
Mount)

100M1761

Base unconfigured MTL5575
temperature isolator. Requires
143324-01 to configure.

102M0274-01

3500/82 Stator Insulation Monitor
Manual

Field Wiring Considerations

4 wire shielded 18 AWG shielded cable.

02171490

Belden 89418

Specifications and Ordering Information

Part Number 323735-01

Rev. C (07/14)

Page 8 of 13

Graphs and Figures

1

6

7

2

8

3

9

4

5

1. 3500/82 Monitor (front view)

2. Status LEDs

3. Buffered Transducer Outputs (HSCT & HVS)

4. Buffered Transducer Output (Average Temperature)

5. Buffered Transducer Output (Phase Synchronization)

6. MSIM I/O Module

7. External 28 Vdc Power Input

8. HVS Inputs

9. HSCT Inputs

10. Temperature Inputs (4-20 mA)

10

Figure 1: 3500/82 Stator Insulation Monitor and I/O Module

Specifications and Ordering Information

Part Number 323735-01

Rev. C (07/14)

Page 9 of 13

1. 350821/350823 Mounting Option AXX = 00

Figure 2: Panel Mount HSCT/HVS Interface Module

1. 350821/350823 Mounting Option AXX = 01

2. 35mm DIN rail (Not Included)

3. Additional 3 mm [0.120 in] required to remove from DIN rail.

Figure 3: DIN Rail Mount HSCT/HVS Interface Module

Specifications and Ordering Information

Part Number 323735-01

Rev. C (07/14)

Page 10 of 13

7.5 kV HIGH SENSITIVITY
CURRENT TRANSFORMER

Figure 4: High Sensitivity Current Transformer

Note: Dimensions above represents AXX option = 01.

3

1

2

350825-05 REV -

4

5

1. 300V, 105°C, 22 AWG twisted shielded pair PVC cable

2. 5.5 mm [0.216 in] maximum diameter

3. MIL-C-26482 circular connector (connects to HSCT)

4. LEMO 3-pin circular connector (connects to the HSCT interface module)

5. Cable Length = 5 +/- 0.2 meters

Figure 5: HSCT Interface Cable

Specifications and Ordering Information

Part Number 323735-01

Rev. C (07/14)

Page 11 of 13

4

3

2

11 kV RMS HIGH VOLTAGE SENSOR (HVS)

EARTH (GROUND) TERMINAL

HIGH VOLTAGE TERMINAL

1

1. ¼-20 High Voltage Terminal

2. 3/8-16 Earth Ground Terminal

3. 300V, 105°C, 22 AWG twisted shielded pair PVC cable (4.5 meters)

†

†

4. LEMO 2-pin circular connector (connects to the HVS interface module)

Figure 6: High Voltage Sensor

†

This terminal is an electrically isolated mounting terminal on the intrinsically safe HVS. Consult field wiring drawing

100M5071 for important grounding requirements for hazardous area installations.

1. Top of DIN rail

2. 35mm DIN rail (Not Included)

Figure 7: Temperature Interface Module

Specifications and Ordering Information

Part Number 323735-01

Rev. C (07/14)

Page 12 of 13

*Denotes a trademark of Bently Nevada, Inc., a wholly owned subsidiary of General Electric Company.

© 2012 - 2014 Bently Nevada, Inc. All rights reserved.

Printed in USA. Uncontrolled when transmitted electronically.

1631 Bently Parkway South, Minden, Nevada USA 89423

Phone: [phone] Fax: [phone]

www.ge-mcs.com/bently

Specifications and Ordering Information

Part Number 323735-01

Rev. C (07/14)

Page 13 of 13