详细说明 通用高压隔离放大器 VariTrans® P 41000 KNICK

VariTrans® P 41000 Universal high-voltage isolator for conversion of voltages, e. g. in shunt applications, from ±60 mV up to ±100 V into impressed ±20mA, ±10 V, or 4 ... 20 mA output signals.   Product description   Connection examples   Facts   Product Line   Dimension drawings   Schematic diagram   Specifications   Downloads

The Task In high-voltage systems unipolar or bipolar voltage signals ranging from 60mV to 100 V, e. g. voltages across shunt resistors, must be galvanically isolated and converted to standard ±20 mA, ±10 V or 4 ... 20 mA output signals. The Problems In the case of insufficient insulation the high voltages and rough operating conditions may impair the galvanic isolation. This can result in false signals or even personal injury or damage to the equipment. These risks have to be securely eliminated in the long term through isolation amplifiers that are specially suited for high-voltage applications. The Solution The Varitrans® P 41000 isolation amplifier series has been specially conceived for measurements of bipolar voltages from millivolts to volts. They reliably isolate high potentials at the input circuit. The isolation unit is designed to permanently withstand potential differences up to 3600 V AC/DC and transient overvoltages up to 20 kV. Protection against dangerous currents is achieved through protective separation to EN 61140 from input to output and power supply. The Housing For the Varitrans® P 41000 high-voltage isolation amplifiers a new 22.5 mm wide modular housing is used. It can be fixed on a standard DIN rail. The front panels of the adjustable models provide a rotary decoding switch for selecting the ranges. The Advantages The Varitrans® P 41000 are available for any input voltages from ±60 mV to ±100 V. At the output analog unipolar or bipolar (standard) signals are available: ±20 mA, ±10 V or 4 ... 20 mA. 16 input/output signal combinations can be conveniently selected using a rotary coding switch on the device front. Tedious adjustments using screwdriver, calibrator, and multimeter are not necessary. Drift problems due to instable trimming components (e. g. potentiometers) are avoided. Thanks to the easy range selection the devices can be flexibly suited to the individual needs of the application. Up to 16 customized signal combinations can be implemented in one device. The integrated 20 to 253 V AC/DC broad-range power supply offers highest flexibility. It ensures problem-free operation with every AC or DC supply voltage utilized world-wide. Even instable power supply systems do not cause a problem. Installation is safe and easy: Erroneous connection of mains supply is practically impossible. Expensive standstill times and repair work during the commissioning are prevented. Vacuum encapsulation provides maximum long-term protection against aggressive environmental influences, shock and vibrations andensures the high disruptive strength required for working voltages up to 3600 V AC/DC. The isolation unit meets the safety requirements of EN 61010-1 and EN 50124-1 (railway applications: insulation coordination). The Technology In this product line Knick utilizes the new TransShield® technology which enables the construction of very compact and low-leakage high-voltage transformers. Due to the resulting space savings a just 22.5 mm modular housing is sufficient for input voltages up to 3600 V AC/DC. To guarantee the specified isolation capabilities, the devices are subjected to routine testing with 15 kV AC (fixed-range models) or 10 kV AC (switchable models) on a 100% basis. Circuit design and device construction ensure excellent transmission characteristics, which become manifest in zero stability, linearity, long-term stability, frequency response and immunity to interference. A cut-off frequency >5 kHz and rise time <0.1 ms guarantee distortion-free signal conversion. The output signal follows fast changes in the input signal almost without delay.

	Connection examples

Facts   Universal high-voltage isolator for conversion of voltages ranging from ±60 mV to ±100 V, e. g. in shunt applications, into impressed ±20mA, ±10 V or 4 ... 20 mA output signals Working voltages up to 3600 V Protection against electric shock by means of protective separation up to 1800 V AC/DC according to EN 61140 Test voltages up to 15 kV AC Excellent transmission characteristics: Gain error <0.1 % Cut-off frequency >5 kHz (low-pass filtering possible) Rise time T90 <0.1 ms Virtually not influenced by common-mode voltages: CMRR >150 dB High resistance against transient interferences: T-CMRR >115 dB Very high flexibility due to selection of up to 16 calibrated input/output ranges (up to 2200 V working voltage) up to 16 customer-specific ranges 20 V to 253 V AC/DC broad-range power supply Reliable function even with instable power supply No damage in the case of erroneous power connection Switchable models minimize required device variants and save stockkeeping costs Vacuum encapsulation ensures high stability Suitable for DC railway systems up to 3000 V DC Mechanically stable for operation on ships, rail and road vehicles 5-year warranty

Product line
Device	Input	Output	Order no.	Order no.
			Working voltage	Working voltage
			≤2.2 kV AC/DC	≤3.6 kV AC/DC
			Test voltage: 10 kV AC	Test voltage: 15 kV AC
VariTrans® P 41000	±60 / 90 / 150 / 300 / 500 mV /	±10 V, ±20 mA and	P 41000 D1	–
with calibrated input and	10 V1), calibrated selection	4 ... 20 mA, calibrated
output selection		selection
VariTrans® P 41000	±60 mV	±20 mA	P 41056 D1	P 41156 D1
fixed settings	±60 mV	4 ... 20 mA	P 41059 D1	P 41159 D1
	0...60 mV	4 ... 20 mA	P 41057 D1	P 41157 D1
	±60 mV	±10 V	P 41058 D1	P 41158 D1
	±90 mV	±20 mA	P 41046 D1	P 41146 D1
	±90 mV	4 ... 20 mA	P 41049 D1	P 41149 D1
	0 ... 90 mV	4 ... 20 mA	P 41047 D1	P 41147 D1
	±90 mV	±10 V	P 41048 D1	P 41148 D1
	±150 mV	±20 mA	P 41066 D1	P 41166 D1
	±150 mV	4 ... 20 mA	P 41069 D1	P 41169 D1
	0...150 mV	4 ... 20 mA	P 41067 D1	P 41167 D1
	±150 mV	±10 V	P 41068 D1	P 41168 D1
	±300 mV	±20 mA	P 41076 D1	P 41176 D1
	±300 mV	4 ... 20 mA	P 41079 D1	P 41179 D1
	0 ... 300 mV	4 ... 20 mA	P 41077 D1	P 41177 D1
	±300 mV	±10 V	P 41078 D1	P 41178 D1
	±500 mV	±20 mA	P 41086 D1	P 41186 D1
	±500 mV	4 ... 20 mA	P 41089 D1	P 41189 D1
	0 ... 500 mV	4 ... 20 mA	P 41087 D1	P 41187 D1
	±500 mV	±10 V	P 41088 D1	P 41188 D1
	±1 V	±20 mA	P 41096 D1	P 41196 D1
	±1 V	4 ... 20 mA	P 41099 D1	P 41199 D1
	0 ... 1 V	4 ... 20 mA	P 41097 D1	P 41197 D1
	±1 V	±10 V	P 41098 D1	P 41198 D1
	±10 V	±20 mA	P 41036 D1	P 41136 D1
	±10 V	±10 V	P 41038 D1	P 41138 D1
VariTrans® P 41000	±60 mV ... 100 V	±10 V, ±20 mA,	P 41000 D1-nnnn	–
to customer	one or more ranges to	4 ... 20 mA, one or more
requirements	customer requirements2)	ranges to customer
		requirements2)
	±60 mV ... 100 V	±10 V, ±20 mA,	P 41000 D1-nnnn	P 41100 D1-nnnn
	fixed settings to	4 ... 20 mA, fixed
	customer requirements2)	settings to customer
		requirements2)
"Specific Test Report" included in delivery.
Power supply
20 ... 253 V AC/DC
1) Input ±10 V switchable only with output ±10 V
2) Please specify desired setting when ordering

Dimension drawings and terminal assignments

Schematic diagram

Specifications
Input data
Inputs	P 41000 D1	±60 mV, ±90 mV, ±150 mV, ±300 mV,	Calibrated range selection,
		±500 mV, ±10 V, factory setting: ±10 V
	P 41000 D1-nnn	60 mV ... 100 V, unipolar/bipolar	1 to 16 ranges to customer requirements,
			calibrated range selection
	P 41100 D1-nnn	60 mV ... 100 V, unipolar/bipolar	Fixed setting to customer requirements
Input resistance	Range ≤0.5 V	Approx. 100 kohms
	Range >0.5 V ... 3600V	>2 Mohms
Input capacitance	Range ≤0.5 V	Approx. 10 nF
	Range >0.5 V	Approx. 1 nF
Overload	Range ≤10 V	Limited to 36 V by suppressor diode, permissible continuous current = 20 mA
	Range >10 V	Limited to 150 V by suppressor diode, permissible continuous current = 3 mA
Output data
Output	P 41000 D1	20 mA, 10 V unipolar/bipolar	Calibrated range selection,
		and 4 ... 20 mA	factory setting: ±10 V
	P 41000 D1-nnn	20 mA, 10 V unipolar/bipolar	Calibrated range selection,
		and/or 4 ... 20 mA	to customer requirements
	P 41100 D1-nnn	20 mA, 10 V unipolar/bipolar or	Fixed setting to customer requirements
		4 ... 20 mA
Offset	Factory setting up to ±150 %
Load	With output current	≤12 V (600 ohms at 20 mA)
	With output voltage	≤10 mA (1000 ohms at 10 V)
Offset error	<20 µA or 10 mV
Residual ripple	<10 mVrms
Transmission behavior
Gain error	<0.1 % meas. val.
Cut-off frequency	>5 kHz; optional factory setting: 10 Hz
(–3dB)
Common mode	Input range ≤1 V	CMRR1)	Approx. 150 dB (DC/AC: 50 Hz)
rejection ratio		T-CMRR2)	Approx. 115 dB (1000 V, tr = 1 µs)
	Input range >1 V	CMRR1)	DC: approx. 150 dB
			AC 50 Hz: approx. 120 dB
Temperature influence 3)	<0.005 %/K full scale
Power supply
Power supply	20 ... 253 V AC/DC	AC 48 ... 62 Hz, approx. 2 VA; max. approx. 1.2 W
Isolation
Galvanic isolation	3-port isolation between input, output, power supply
Test voltage	Calibrated range	10 kV AC across input and output/power supply
	selection
	Fixed settings	15 kV AC across input and output/power supply
	(Model P411xxD1)
	All models	4 kV AC output to power supply
Working voltage	Calibrated range	Up to 2200 V AC/DC across input, output, and power supply with overvoltage
(basic insulation)	selection	category III and pollution degree 2 (fast transients max. 13.5 kV)
to EN 61010-1	Fixed settings	Up to 3600 V AC/DC across input, output, and power supply with overvoltage
	(Model P411xxD1)	category III and pollution degree 2 (fast transients max. 20 kV)
Rated insulation	Calibrated range	Up to 2200 V AC/DC across input, output, and power supply with overvoltage
voltage to	selection	category III and pollution degree 2
EN 50124-1	Fixed settings	Up to 3000 V AC/DC across input, output, and power supply with overvoltage
	(Model P411xxD1)	category III and pollution degree 2
Protection against	Calibrated range	Protective separation according to EN 61140 by reinforced insulation in accordance with
electric shock	selection	EN 61010-1
		Working voltages with overvoltage category III and pollution degree 2:
		–up to 1100 V AC/DC across output and power supply
		–up to 300 V AC/DC across output and power supply
	Fixed settings	Protective separation according to EN 61140 by reinforced insulation in accordance with
	(Model P411xxD1)	EN 61010-1
		Working voltages with 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
	For applications with high working voltages, you should ensure there is sufficient spacing or isolation from neighboring devices and protection against electric shocks.
Standards and approvals
EMC4)	Product standard EN 61326
	Emitted interference: Class B
	Immunity to interference: Industry
Surge withstand	5 kV, 1.2/50 µs, to IEC 255-4 (higher values upon request)
Further data
MTBF5)	Approx. 96 years
Ambient	Operation: –10 ... +70 °C
temperature6)	Transport and storage: –40 ... +85 °C
Design	Modular housing	Width 22.5 mm
	with screw	See dimension drawing for other measurements
	connectors
Protection class	Housing IP 40, terminals IP 20
Mounting	Snap-on mounting on 35 mm top-hat rail according to EN 60715
Weight	Approx. 180 g
1) Common-Mode Rejection Ratio =
2) Transient Common-Mode Rejection =
3) Reference temperature for TC specifications = 23 °C, the average TC is always specified
4) Slight deviations are possible while there is interference
5) Mean Time Between Failures - MTBF - to EN 61709 (SN 29500). Conditions: stationary operation in well-tended rooms, average     ambient temperature 40 °C, no ventilation, continuous operation
6) Extended working temperature range –25 ... +85 °C on request