Knick VariTrans P 41000 TRMS User manual

User Manual P41000 TRMS
AC High Voltage Transducer
www.knick.de
Read before installation.
Keep for future use.

P41000 TRMS
2
Supplemental Directives
READ AND SAVE THIS DOCUMENT FOR FUTURE REFERENCE. BEFORE ATTEMPTING TO ASSEMBLE, INSTALL,
OPERATE OR MAINTAIN THE PRODUCT, PLEASE ENSURE A COMPLETE UNDERSTANDING OF THE INSTRUC-
TIONS AND RISKS DESCRIBED HEREIN. ALWAYS OBSERVE ALL SAFETY INFORMATION. FAILURE TO COMPLY
WITH INSTRUCTIONS IN THIS DOCUMENT COULD RESULT IN SERIOUS INJURY AND/OR PROPERTY DAMAGE.
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE.
These supplemental directives explain how safety information is laid out in this document and what
content it covers.
Safety Chapter
This document's safety chapter is designed to give the reader a basic understanding of safety. It illus-
trates general hazards and gives strategies on how to avoid them.
Warnings
This document uses the following warnings to indicate hazardous situations:
Symbol Category Meaning Remark
WARNING Designates a situation that can lead to death or serious
(irreversible) injury.
The warnings contain
information on how to
avoid the hazard.
CAUTION Designates a situation that can lead to slight or moderate
(reversible) injury.
None NOTICE Designates a situation that can lead to property or environ-
mental damage.

P41000 TRMS
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Table of Contents
1 Safety............................................................................................................................................. 4
1.1 Intended Use ......................................................................................................................................................... 4
1.2 Personnel Requirements ................................................................................................................................... 4
1.3 Isolation................................................................................................................................................................... 4
2 Product.......................................................................................................................................... 5
2.1 Package Contents ................................................................................................................................................ 5
2.2 Product Identification......................................................................................................................................... 5
2.3 Nameplates ............................................................................................................................................................ 6
2.4 Symbols and Markings....................................................................................................................................... 7
2.5 Function .................................................................................................................................................................. 7
2.5.1 Functional Description......................................................................................................................... 7
2.5.2 Block Diagram ......................................................................................................................................... 7
2.5.3 Application Example............................................................................................................................. 8
2.6 Terminal Assignments........................................................................................................................................ 8
2.7 Installation and Commissioning..................................................................................................................... 9
2.8 Operation................................................................................................................................................................ 10
2.9 Maintenance.......................................................................................................................................................... 10
2.10 Troubleshooting................................................................................................................................................... 10
2.11 Decommissioning................................................................................................................................................ 11
2.11.1 Removal ..................................................................................................................................................... 11
2.11.2 Return......................................................................................................................................................... 11
2.11.3 Disposal...................................................................................................................................................... 11
2.12 Dimension Drawings .......................................................................................................................................... 12
2.13 Specifications ........................................................................................................................................................ 13
Abbreviations ............................................................................................................................... 16
Index.............................................................................................................................................. 17

P41000 TRMS
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1 Safety
This document contains important instructions for the use of the product. Always follow all instructions
and operate the product with caution. If you have any questions, please contact Knick Elektronische
Messgeräte GmbH & Co. KG (sometimes hereafter referred to as “Knick”) using the information provided
on the back page of this document.
1.1 Intended Use
The P41000 TRMS is a high voltage transducer for measuring sinusoidal and non-sinusoidal AC input
voltages in the range of 0…60mV to 0…10VAC. ➜Application Example, p. 8
The AC input signals are detected, galvanically isolated, and converted into standardized analog DC
output signals 0…20mA, 4…20mA, or 0…10 V).
The DC output signal represents the true RMS value of the AC input signal.
The P41000 TRMS is available in different versions:
• Versions with up to 16 calibrated and switchable input and output ranges. The input and output
ranges are switched via an isolated rotary switch and the corresponding connection of the
outputs.➜Terminal Assignments, p. 8
• Versions that are permanently set to an input and output range (without rotary switch).
The specific version of the product is stated on the nameplates attached to the product. Different
properties for special versions are indicated on the nameplates. The information on the nameplates is
binding.
The defined operating conditions must be observed when using this product. ➜Specifications, p. 13
USE CAUTION AT ALL TIMES WHEN INSTALLING, USING, OR OTHERWISE INTERACTING WITH THE PRODUCT.
ANY USE OF THE PRODUCT EXCEPT AS SET FORTH HEREIN IS PROHIBITED, AND MAY RESULT IN SERIOUS
INJURY OR DEATH, AS WELL AS DAMAGE TO PROPERTY. THE OPERATING COMPANY SHALL BE SOLELY
RESPONSIBLE FOR ANY DAMAGES RESULTING FROM OR ARISING OUT OF AN UNINTENDED USE OF THE
PRODUCT.
Comply with the information on proper storage. ➜Specifications, p. 13
See also
➜Product Identification, p. 5
➜Nameplates, p. 6
1.2 Personnel Requirements
The operating company shall ensure that any personnel using or otherwise interacting with the
product is adequately trained and has been properly instructed.
The operating company shall comply and cause its personnel to comply with all applicable laws, regu-
lations, codes, ordinances and relevant industry qualification standards related to product. Failure to
comply with the foregoing shall constitute a violation of operating company’s obligations concerning
the product, including but not limited to an unintended use as described in this document.
1.3 Isolation
Distances to slave devices and conductive parts in the vicinity of the device must be measured accord-
ing to the applied standard. The operating company must carry out, evaluate, and safeguard isolation
coordination with the clearance and creepage distances and the relevant standards (e.g., EN 50124‑1).
See also
➜Insulation, p. 14

P41000 TRMS
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2 Product
2.1 Package Contents
• P41000 TRMS in the version ordered
• Insertable jumper, as applicable1)
• Test Report 2.2 according to EN 10204
• Installation Guide with safety instructions
Note: The User Manual (this document) is published in electronic form. ➜knick.de
2.2 Product Identification
The different versions of the P41000 TRMS are encoded in a model designation.
The model designation can be found on the nameplate and the delivery note. ➜Nameplates, p. 6
Input Output Model Designation
Working Voltage
≤2.2kVAC/DC
Test Voltage
10kVAC
Model Designation
Working Voltage
≤3.6kVAC/DC
Test Voltage
15kVAC
0…60mV to 0…10VAC
1 to 16 ranges to customer
requirements, calibrated
switching
0…20mA, 4…20mA and/
or 0…10V
To customer requirements,
fixed setting or calibrated
switching
P41000D1 TRMS-nnnn –
0…60mV to 0…10VAC
1 to 16 ranges to customer
requirements, calibrated
switching
0…20mA, 4…20mA and/
or 0…10V
To customer requirements,
fixed setting
P41000D1 TRMS-nnnn P41100D1TRMS-nnnn
1) Dependent on the ordered version ➜Product Identification, p. 5

P41000 TRMS
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2.3 Nameplates
The P41000 TRMS is identified by nameplates on the side and front of its housing. The information on
the nameplates varies depending on the version of the product.
➜Product Identification, p. 5
2
1
11
3
4
5
6
7
8
9
10
8
4
7
6
12
13
14
15
16
17
18
19
20
21
22
1Nameplate, device front 12 CE mark
2Nameplate, right side 13 WEEE mark
3Rotary encoder switch position marking 14 Manufacturer’s address with designation of origin
4Special conditions and danger points 15 Barcode: product number, serial number, check digit
5Input terminal assignments 16 UKCA mark
6Model designation 17 Input and output ranges
7Product line 18 Permissible ambient temperature
8Manufacturer 19 Type test voltage
9Power supply terminal assignments 20 Power supply1)
10 Output terminal assignments 21 Product name
11 Product number, serial number 22 Terminal assignments
1) The device is supplied with power from a broad-range power supply (DC or AC). ➜Power Supply, p. 14

P41000 TRMS
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2.4 Symbols and Markings
Special conditions and danger points! Observe the safety information and instructions on safe use of the
product as outlined in the product documentation.
CE marking.
UK Conformity Assessed: Conformity mark for the United Kingdom (England, Scotland, and Wales)
The symbol on Knick products means that the waste devices must be disposed of separately from
unsorted municipal waste.
2.5 Function
2.5.1 Functional Description
The P41000 TRMS is available in different versions. The product properties vary depending on the ver-
sion. ➜Product Identification, p. 5
The sinusoidal and non-sinusoidal AC input signals are detected by the P41000 TRMS; the TRMS value
is formed continuously. The TRMS value is transmitted, galvanically isolated, to the output, where it is
converted into a normalized analog DC output signal. ➜Block Diagram, p. 7
An example application is measuring AC current via a shunt resistor. ➜Application Example, p. 8
The high potential of the input circuit is isolated by 3-port isolation between input, output, and power
supply. ➜Insulation, p. 14
The electronic components of the P41000 TRMS are protected from environmental influences, shock,
and vibration by vacuum encapsulation. ➜Standards and approvals, p. 14
The power supply to operate the P41000 TRMS is provided by an integrated broad-range power
supply. ➜Power Supply, p. 14
See also
➜Intended Use, p. 4
➜Specifications, p. 13
2.5.2 Block Diagram
UZ* 1 nF TRMS
C 1 nF
DC output U/I
Z 13 V
Z* Input
6.8 V
68 V
≤ 500 mV
> 500 mV
Power supply 20 ... 253VAC/DC
in

P41000 TRMS
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2.5.3 Application Example
Note: The figure shows an example of AC current measurement via a shunt resistor. The specified
values refer to the P41100D1TRMS-nnnn version.
Note: In the figure, Control is used as an umbrella term for any form of further processing of the
output signal.
See also
➜Product Identification, p. 5
2.6 Terminal Assignments
Note: The insertable jumper must be installed in terminals 13 and 14 for voltage output. No insertable
jumper must be installed for current output. ➜Installation and Commissioning, p. 9
5 Input Voltage 0…60mV to 0…10VAC
7 Input 0
11 Power supply AC/DC
12 Power supply AC/DC
13 DC output Current/voltage (+)
14 DC output Voltage (+)
15 DC output Current (-)
16 DC output Voltage (-)
See also
➜Nameplates, p. 6

P41000 TRMS
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2.7 Installation and Commissioning
WARNING! Shock potential. Do not install the product live.
NOTICE! Product damage due to electrostatic discharge (ESD). Take protective measures against
electrostatic discharge.
NOTICE! Damage to the screw terminals due to excessive tightening torque. Tighten the screw
terminals with a max. torque of 0.8Nm.
Note: P41000 TRMS may only be operated in a (lockable) control cabinet.
01. Disconnect the electrical system from live parts.
02. Secure the electrical system against restart.
03. Verify that the electrical system is dead.
04. Ground and short-circuit the electrical system.
05. Cover or isolate adjacent live parts with insulating materials.
06. For switchable versions: Position the rotary switch.
Note: The available input and output ranges, and the factory settings, are indicated on the name-
plate on the side.
07. For current output: As necessary, remove the pre-installed insertable jumper.
➜Terminal Assignments, p. 8
Note: Switchable versions are delivered from the factory with an installed insertable jumper
(=voltage output). When switching to current output, the installed insertable jumper must be
removed. Fixed-range versions are delivered with an installed insertable jumper for voltage output
and without an insertable jumper for current output.
08. Snap the P41000 TRMSon to the 35mm DIN rail.
09. Strip 8mm of insulation from the cable ends, fit ferrules to the stranded wires. Twist pairs of cables
to a point close to the connection.
Maximum cable cross-section 1 x 2.5 mm2 stranded wire with ferrule
1 x 4mm2 solid
2 x 1.5 mm2 stranded wire with ferrule
2 x 2.5mm2 solid
Minimum cable cross-section 1 x 0.5 mm2 solid or stranded wire with ferrule
10. Connect the cables for the output.
11. Connect the power supply cables.
Note: The polarity of the auxiliary power can be freely selected during connection.
12. Connect the cables for the input.
13. Reset the electrical system to its initial state. Reverse the steps taken to ensure voltage-free
operation.
14. Switch on the power supply.
Note: The power supply to operate the P41000 TRMS is provided by an integrated broad-range power
supply (20…253VAC/DC).
See also
➜Nameplates, p. 6
➜Terminal Assignments, p. 8
➜Troubleshooting, p. 10

P41000 TRMS
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2.8 Operation
The P41000 TRMS is designed for continuous operation. The product must be operated inside a lock-
able control cabinet.
The defined operating conditions must be observed when using this product. ➜Specifications, p. 13
Note: With switchable versions, do not switch the input and output ranges using the rotary encoder
switch during operation. ➜Installation and Commissioning, p. 9
See also
➜Product Identification, p. 5
➜Nameplates, p. 6
2.9 Maintenance
The P41000 TRMS does not require any maintenance. Because it is fully encapsulated, it is not possible
to repair the product.
2.10 Troubleshooting
USE CAUTION WHEN CONDUCTING ANY TROUBLESHOOTING. FAILURE TO ABIDE BY THE REQUIREMENTS
SET FORTH HEREIN MAY RESULT IN SERIOUS INJURY OR DEATH, AS WELL AS DAMAGE TO PROPERTY.
Malfunction State Possible Causes Remedy
Wrong signal at output Inputs/outputs not correctly connected,
e.g., polarity reversed.
Connect inputs/outputs as specified on the
nameplate.
Selectable versions: Rotary switch not
correctly positioned.
Position the rotary switch as specified on
the nameplate.
Selectable versions: For voltage output,
insertable jumper not present or not
correctly mounted.
Position the insertable jumper as specified
on the nameplate.
No output current P41000 TRMS is not connected to the
power supply.
Check the installation and switch on the
power supply.
Further troubleshooting support can be obtained from ➜[e-mail].
See also
➜Terminal Assignments, p. 8
➜Installation and Commissioning, p. 9

P41000 TRMS
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2.11 Decommissioning
2.11.1 Removal
WARNING! Shock potential. Do not uninstall the product live.
01. Disconnect the electrical system from live parts.
02. Secure the electrical system against restart.
03. Verify that the electrical system is dead.
04. Ground and short-circuit the electrical system.
05. Cover or isolate adjacent live parts with insulating materials.
06. Check the input of the P41000 TRMS to ensure it is dead.
07. Switch off the power supply.
08. Open the screw terminals with a screwdriver and remove the cables.
09. Pull down the housing’s base latch using a screwdriver. Lift the P41000 TRMS up and off the
35 mm DIN rail.
2.11.2 Return
If required, send the product in a clean condition and securely packed to your local contact.
➜knick.de
2.11.3 Disposal
Local codes and regulations must be observed when disposing of the product.
Customers can return their waste electrical and electronic devices.
Details on the return and environmentally friendly disposal of electrical and electronic equipment can
be found in the manufacturer’s declaration on our website. If you have any queries, suggestions, or
questions regarding the recycling of waste electrical and electronic equipment from Knick, please
send an email to ➜[e-mail]

P41000 TRMS
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2.12 Dimension Drawings
Note: All dimensions are given in millimeters [inches].

P41000 TRMS
13
2.13 Specifications
Input
Input P41000D1 TRMS-nnnn 0…60mV to 0…10VAC
1 to 16 ranges to customer requirements, calibrated
switching
P41100D1TRMS-nnnn 0…60mV to 0…10VAC
1 to 16 ranges to customer requirements, calibrated
switching
Rated frequency 50/60Hz
Frequency range 40…1000Hz (frequency ≤40Hz on request)
Input resistance Approx. 100 kΩ
Input capacitance Approx. 1 nF
Overload capacity Range ≤0.5V Limited by 6.8 V suppressor diode
Max. permissible continuous current =50mA
Range >0.5…10V Limited by 68 V suppressor diode
Max. permissible continuous current =5mA
Output
Output P41000D1 TRMS-nnnn 0…20mA, 4…20mA and/or 0…10V
To customer requirements, calibrated switching
P41100D1 TRMS-nnnn 0…20mA, 4…20mA and/or 0…10V
To customer requirements, fixed setting
Offset Up to 100 % by default
Load With output current: ≤12V (600Ω at 20mA)
With output voltage: ≤10mA (1000Ω at 10V)
Ripple <10mVrms
Transmission Behavior
Gain error < 0.3 % full scale
Gain error for sinusoidal input signals (crest factor √2) over the frequency range of
45…65 Hz
Response time T90 <150 ms rising
<300ms falling
Influence effects
(additional error)
Frequency 40…1000Hz <1% of measured value (typ.0.5%)
Crest factor 1…3 (non-
sinusoidal signals)
< 0.5% of measured value
Crest factor <3…5< 1% of measured value
Common-mode rejection
ratio
Input ranges ≤0.5V CMRR1)
Approx. 150dB (DC/AC: 50Hz)
T-CMRR2)
Approx. 105dB (1000V, tr = 1μs)
Other input ranges CMRR1)
DC: approx.150dB
AC 50Hz: approx.120dB
Temperature coefficient3) < 0.005 %/K full scale
1) Common-mode rejection ratio = differential voltage gain / common-mode voltage gain
2) Transient Common-Mode Rejection Ratio
3) Reference temperature for temperature coefficient specifications = 23 °C (73.4 °F) The average temperature coeffi-
cient is stated.

P41000 TRMS
14
Power Supply
Power supply 22…230VAC, ±10%, 48…62Hz, approx. 2VA
22…230VDC, ±10%, approx.1.2W
Insulation
Galvanic isolation 3-port isolation between input, output, and power supply
Test voltage Calibrated switching 10 kV AC across input and output/power supply
Fixed
(P41000D1TRMS‑nnnn)
10 kV AC across input and output/power supply
Fixed
(P41100D1TRMS‑nnnn)
15 kV AC across input and output/power supply
All types 4kV AC across output and power supply
Insulation coordination: For applications with high working voltages, take measures to prevent accidental con-
tact and make sure that there is sufficient distance or insulation between adjacent
devices.
Working voltage (basic
insulation) according to
EN 61010‑1
Calibrated switching or fixed
(P41000D1 TRMS‑nnnn)
Up to 2200 V AC/DC across input and output/power sup-
ply with overvoltage category III and pollution degree 2
(transient overvoltage: max. 13.5 kV)
Fixed
(P41100D1TRMS‑nnnn)
Up to 3600 V AC/DC across input and output/power sup-
ply with overvoltage category III and pollution degree 2
(transient overvoltage: max. 20 kV)
Rated insulation voltage
according to EN50124‑1
Calibrated switching or fixed
(P41000D1 TRMS‑nnnn)
Up to 2200 V AC/DC across input and output/power sup-
ply with overvoltage category III and pollution degree 2
Fixed
(P41100D1TRMS‑nnnn)
Up to 3600 V AC/DC across input and output/power sup-
ply with overvoltage category III and pollution degree 2
Protection against electric
shock
Calibrated switching or fixed
(P41000D1 TRMS‑nnnn)
Protective separation according to EN61140 by rein-
forced insulation according to EN 61010‑1. Working volt-
ages at overvoltage category III and pollution degree 2:
• Up to 1100 V AC/DC across input and output/power
supply
• Up to 300 V AC/DC across output and power supply
Fixed
(P41100D1TRMS‑nnnn)
Protective separation according to EN61140 by rein-
forced insulation according to EN 61010‑1. Working volt-
ages at overvoltage category III and pollution degree 2:
• Up to 1800 V AC/DC across input and output/power
supply
• Up to 300 V AC/DC across output and power supply
Standards and approvals
EMC1) Product standard EN61326‑1
Emitted interference Class B
Immunity to interference Industrial applications
Mechanical strength IEC61373
RoHS conformity According to Directive 2011/65/EU
1) Slight deviations are possible during interference.

P41000 TRMS
15
Device
MTBF1) Approx. 96 years
Ambient temperature Operating2) −10…70°C (14…158°F)
Transport and storage -40…85°C (-40…185°F)
Ambient conditions Indoor use3)
Relative humidity 5…95%, no condensation
Altitude up to 2000m(6500 ft), air pressure: 790…1060hPa4)
Design Modular housing with screw terminals (max. tightening torque 0.8 Nm)
Housing width P41***D1TRMS 22.5 mm
Other dimensions ➜Dimension Drawings, p. 12
Connection M3.5 connecting screws with self-lifting terminal clamps
Maximum cable
cross-section
1 x 2.5 mm2 stranded wire with ferrule
1 x 4mm2 solid
2 x 1.5 mm2 stranded wire with ferrule
2 x 2.5mm2 solid
Minimum cable
cross-section
1 x 0.5 mm2 solid or stranded wire with ferrule
Degree of protection Housing IP40, terminals IP20
Mounting 35 mm DIN rail for snap-on mounting according to EN60715
Weight Approx. 180 g
1) Mean time between failures (MTBF) according to EN61709 (SN29500). Requirements: stationary operation in well-
kept spaces, average ambient temperature 40 °C, no aeration, continuous operation.
2) Extended operating temperature range −40…75°C(−40…167°F), short-time 85°C(185°F) on request
3) In enclosed areas, protected from the weather; not permissible are: water or wind-driven precipitation (rain, snow,
hail etc.)
4) At low air pressure, the permissible working voltages are reduced.

P41000 TRMS
16
Abbreviations
CE Conformité Européenne (European conformity)
EMC Electromagnetic compatibility
EN European standard
ESD Electrostatic discharge
IP International Protection / Ingress Protection
MTBF Mean time between failures
TRMS True root mean square
UKCA United Kingdom Conformity Assessed
WEEE Waste from electrical and electronic equipment

P41000 TRMS
17
Index
35mm DIN rail 15
A
Application example 8
Approvals 14
B
Base latch 11
C
Causes, malfunctions 10
Conformity 14
D
Dimension drawing 12
DIN rail 15
Disposal 11
E
Electrical installation 9
Electromagnetic compatibility 14
Electrostatic discharge 9
Environmental damage 4
Error elimination 10
F
Factory setting 9
G
Galvanic isolation 14
I
Input 13
Insertable jumper 9
Insulation 14
Introductory safety chapter 2
J
Jumper 9
M
M3.5 connecting screw 15
Malfunction states 10
Markings 7
Model designation
Coding 5
Versions 6
Mounting 15
N
Nameplate
Device front 6
Side 6
Notes on safety information 2
O
Order code 5
Output 13
P
Package contents 5
Personnel 4
Personnel requirements 4
Power supply 14
Product code 5
Property damage 4
Q
Qualified personnel 4
R
Range selection 9
Recycling 11
Remedies, malfunctions 10
Retrurn of waste equipment 11
Returns 11
Rotary switch 9
S
Safety chapter 4
Safety instructions 2
Standards 14
Supplemental directives 2
Supply voltage 14
Symbols and markings 7
T
Terminal assignments 8
Terminals 8
Test voltage 14
Transmission behavior 13
Troubleshooting 10
Type designation 5
Typical application 8
V
Variants 6
Versions 5
W
Warnings 2

Knick
Elektronische Messgeräte
GmbH & Co. KG
Headquarters
Beuckestraße 22 • 14163 Berlin
Germany
Phone: [phone]
Fax: [phone]
[email protected]
www.knick.de
Local Contacts
www.knick-international.com
Translation of the original instructions
Copyright 2023 • Subject to change
Version 6 • This document was published on April 20, 2023.
The latest documents are available for download on our
website under the corresponding product description.
TA-253.112-KNEN06
100451