hivolt HAR12, HAR2 Operating Manual

1

hivolt.de GmbH & Co. KG
Oehleckerring 40 y D-22419 Hamburg y  [phone] y  [phone] y  [email protected] y http://www.hivolt.de

HAR12

12 Channel

High Voltage Amplifier

HAR2

2 Channel

High Voltage Amplifier

Operating Manual

2

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Oehleckerring 40 y D-22419 Hamburg y  [phone] y  [phone] y  [email protected] y http://www.hivolt.de

1

WARNINGS ................................................................................................................................................................ 3

2 OVERVIEW................................................................................................................................................................ 5

3 DESCRIPTION........................................................................................................................................................... 5

3.1 BLOCK DIAGRAM ................................................................................................................................................... 6

3.2 CONTROL VOLTAGE INPUT ................................................................................................................................... 7

3.3 MEASURING CIRCUITS / MONITOR OUTPUTS .................................................................................................... 7

3.4 INHIBIT............................................................................................................................................................... 8

3.5 LOADING CONDITIONS......................................................................................................................................... 8

4 INSTALLATION AND OPERATION ..................................................................................................................... 9

4.1 GENERAL................................................................................................................................................................ 9

4.2 TEMPERATURE BALANCE....................................................................................................................................... 9

4.3 FUNCTIONAL TEST ................................................................................................................................................ 9

4.4 OUTPUT CONNECTIONS ........................................................................................................................................ 9

4.5 VENTILATION REQUIREMENTS ............................................................................................................................. 9

4.6 RACK MOUNTING HAR12 ................................................................................................................................10

4.7 WALL MOUNTING HAR2-W............................................................................................................................. 10

4.8 PERIODIC SERVICE............................................................................................................................................. 10

4.9 TROUBLESHOOTING ............................................................................................................................................ 11

5 TECHNICAL SPECIFICATIONS.......................................................................................................................... 11

5.1 EXTERNAL CONNECTORS.................................................................................................................................... 13

5.2 INTERNAL CONNECTORS .................................................................................................................................... 13

5.3 AMBIENT CONDITIONS........................................................................................................................................ 13

5.4 MECHANICAL SPECIFICATIONS .......................................................................................................................... 14

6 DECLARATION OF CONFORMITY................................................................................................................... 15

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1 Warnings

Attention! This device produces dangerous voltage above 500V.

 The device should be operated only by skilled personnel, in accordance with the local

regulations and the instructions given in this manual.

 Before switching on the unit, the experiment set-up should be checked out, and

safety should be assured. High voltage areas have to be sealed off and secured.

 In case of suspected damage or malfunction, the device should immediately be put

out of service, and it should be secured against unintentional or accidental
operation.

 To provide protection for personnel in case of unit failure, the safety ground must

always be connected! Local regulations about grounding should be taken into
account.

 High voltages may still exist even after the switch-off of the device due to capacitive

charge! Capacitances connected to the outputs of the device can possibly remain
charged to dangerous voltages, even after switching off the device

 Before removing any covers or modules, switch off the mains switch and disconnect

the unit from the mains!

 Fuses have to be replaced by types as rated on the nameplate on the rear of the

unit.

Personal safety must be given the highest priority !

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Warnhinweise

Achtung! Dieses Gerät erzeugt lebensgefährliche Spannungen über 500V.

Vor jeder Inbetriebnahme des Hochspannungsverstärkers sind u.a. folgende Regeln zu
beachten:

 Die Inbetriebnahme darf nur von einer Elektrofachkraft im Sinne der

Berufsgenossenschaft der Feinmechanik und Elektrotechnik vorgenommen werden.

 Vor der Inbetriebnahme muss die Bedienungsanleitung gelesen und verstanden

worden sein.

 Es sind die einschlägigen Bestimmungen und Vorschriften des Gesetzgebers, der

Berufsgenossenschaft und des VDE zu beachten, insbesondere

- DIN-VDE 104 "Errichten und Betreiben elektrischer Prüfanlagen"
(s. auch BGI 891 "Errichten und Betreiben von elektrischen Prüfanlagen")

- Unfallverhütungsvorschrift DGUV Vorschrift 3 / BGV A3
"Elektrische Anlagen und Betriebsmittel"

 Das Gerät darf nur als Bestandteil eines im Ganzen den Vorschriften für den Umgang

mit Hochspannung genügenden Gesamtaufbaus betrieben werden!

 Sollte der Verdacht bestehen, dass das Gerät beschädigt ist oder Fehlfunktionen

zeigt, ist es umgehend außer Betrieb zu setzen und gegen beabsichtigten oder
unbeabsichtigten Betrieb zu sichern.

 Der Erdbolzen auf der Rückplatte des Geräts muss mit dem Zentralen Erdpunkt des

Versuchsaufbaus und dem Schutzleiter verbunden werden. Die örtlichen Vorschriften
über Erdung sind zu beachten.

 Die Ausgangssteckverbinder dürfen nur bei spannungsfrei geschaltetem Gerät

betätigt werden! Es besteht sonst die Gefahr eines elektrischen Schlages.

 Vor jedem Einschalten des Geräts ist der Versuchsaufbau zu überprüfen und sicher-

zustellen, dass es zu keiner Gefährdung kommen kann. Die Hochspannung
führenden Bereiche müssen vorschriftengerecht abgesperrt oder anderweitig
gesichert sein!

 Bei Arbeiten am Versuchsaufbau oder bei Berühren der Ausgangsanschlüsse ist das

Gerät zuvor von der Spannungsversorgung zu trennen.

 Im angeschlossenen Versuchsaufbau können evtl. vorhandene Kapazitäten auf

Hochspannung aufgeladen werden. Diese können auch nach Abschalten des Geräts
noch gefährliche Spannungen führen.

 Vor dem Öffnen des Geräts ist das Gerät von der Spannungsversorgung zu trennen.
 Sollte ein Ersatz der Netzsicherungen erforderlich sein, so ist sicherzustellen, dass

nur Sicherungen der angegebenen Nennstromstärke und Nennspannung als Ersatz
verwendet werden.

Der Personensicherheit ist höchste Priorität einzuräumen!

5

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2 Overview

This manual covers the following models:

 HAR12A 12-channel high voltage amplifier
 HAR12 12-channel high voltage amplifier mainframe (BNC output connectors)
 HAR12S 12-channel high voltage amplifier mainframe (SHV output connectors)
 HAR2 2-channel high voltage amplifier mainframe (SHV output connectors)
 HAR2-W 2-channel high voltage amplifier mainframe (SHV output connectors)
 HA05B2 single channel high voltage amplifier module family

3 Description

The high voltage amplifier HAR12 is a 3U high 19" rack-mountable unit. Up to twelve
independent channels provide output voltages in the range of –500V to +500V at a load current
of ±2mA each. The gain is 50 and the input voltage range is ±10 V. The channels consist of
HA05B2 amplifier modules.

The amplifier channels are characterized by high accuracy, very high stability and very low
noise. The device can thus be used as a multi channel reference voltage source.
Both the output voltage and the load current of each channel can be displayed on two DVMs.
A rotary switch (CHANNEL) is provided for selection of the channel to be measured.

The output voltages of each channel can be controlled by a control voltage (IN) or by a 10-turn
potentiometer (SETPOINT). Each channel is equipped with a voltage monitor output, current
monitor output and inhibit input.
All amplifier outputs are protected against overload, short circuit, and transient overvoltage.

The HAR2/HAR2-W mainframes accommodate up to two amplifier channels.
HAR2 is a table top unit, HAR2-W is a wall-mount type.

The HAR12 models are supplied by mains voltage. The HAR2 models are supplied by 24V

DC

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3.1 Block diagram

1N

IN

-

10K0

A3

SETPOINT

INHI B

+540V

A2

I-MON

A3

W2

1
2
3

X5

Spannungsregler

V19

1K00

-10.0V

MAN

V24

VO

INHI B

A4

V-MON

49R9

INHIB

-540V

X6

X7

CMR

X4





+

REM

+10.0V

10R0

OFFSET

W1

1
2
3

The block diagram shows one amplifier channel.

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3.2 Control Voltage Input

The control voltage input (IN) is connected to a differential amplifier to
suppress common mode voltages between the external signal source and
the amplifier. Two jumpers (W1, W2) are provided on each amplifier
module HA05B2 in order to adapt the control voltage input to the signal
source.
W1 connects the input signal reference via 10  to the amplifier signal
ground. W2 adjusts the amplifier gain to the output impedance of the
signal source.

W1
1-2 Common mode voltage / Noise <1 V

RMS

or floating signal source

Default

2-3 Common mode voltage / Noise 1...4 V

RMS

W2
1-2 Output impedance of signal source <1  Default
2-3 Output impedance of signal source 50 

Alternatively, the control voltage can be generated by means of a 10­turn potentiometer (SETPOINT). The potentiometer supplies –10 V at the
CCW end position (0) and +10 V at the CW end position (10). Zero
position is at 5. Switching between internal and external control voltage
is achieved by a front panel switch (MAN / REM).

3.3 Measuring Circuits / Monitor Outputs

Two monitor outputs (V-MON / I-MON) provide actual values of output voltage and output
current, both of which are normalized to ±10 V. The monitor outputs receive their signal through
a compensated voltage divider. Current measurement takes place differentially across a sense
resistor in the output line. Due to differential measurement, a certain drift of the measured
output current over temperature and output voltage is inevitable (refer to technical
specifications).

If the INHIB-input is active, then an appreciable current flows through the sense resistor. This
current is shown by I-MON even though it does not flow from the output (The current flows into
the inhibit semiconductor switch). This value is masked out in the signal to the DVM.

The monitor outputs are buffered and short-circuit-proof. They can drive capacitive loads
(coaxial cable). They are not designed to drive terminated cables (50/75 ), and they should
not be short circuited during normal operation. Load impedance  4 k.

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3.4 INHIBIT

Each high voltage amplifier channel can be remotely switched off through the INHIB input. The
input is TTL-compatible. A LOW-signal turns on the amplifier. In case of open input or HIGH­signal, the amplifier is turned off. For manual operation, a 50 : BNC-termination resistor can be
used to statically turn the amplifier channel on.
The Inhibit-signal drives a semiconductor switch, short-circuiting the output (approx. 100 )
within microseconds. The switch conducts independently of the internal supply voltage, even
after the device is switched-off.
The INHIB input is not suitable to achieve a safe state at the amplifier output. It must not be
used for safety relevant purposes.

3.5 Loading Conditions

The amplifiers are designed to drive any combination of resistive and capacitive loads.
Full output voltage is available for resistive loads  250 k. When driving capacitive loads the
reactive current must be taken into consideration. This current into the load capacitance
depends on the capacitance value and the slew-rate: i

CL

= CL * dv / dt.

The effective load capacitance consists of connected load capacitance, the capacitance of the
output cable, and the capacitance internal to the amplifier. If the output current exceeds the
peak current capability of the amplifier module (refer to the specifications), the output voltage
will become distorted.

The achievable large-signal bandwidth strongly depends on the capacitance of the connected
load.

Particularly with regard to the high speed versions of the amplifier modules, the cable
capacitance may become the dominant part of load capacitance. One meter of typical coaxial
cable has a capacitance of about 100 pF.

Large capacitive loads driven by high frequency signals may result in a DC-offset superimposed
on the output voltage. This occurs if the final value of the desired output voltage can not be
reached periodically.

No damage to the amplifier modules will result from the different conditions mentioned.

9

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4 Installation and Operation

4.1 General

After unpacking, perform an initial inspection to ensure that the unit is in a good working order.
If the unit was damaged in shipment, notify the carrier immediately.

4.2 Temperature balance

In order to avoid condensation inside the device, the device itself must be able to adopt room
temperature. Please arrange the unpacked device at least 2 hours before usage.

4.3 Functional Test

Before installing the unit in a complete setup, a short test should be performed:

1. Assure that the power switch is off.

2. Disconnect all the signal and high voltage cables from the device.

3. Set all of the SETPOINT-potentiometers to 10.0.

4. Set all input selector switches to REM.

5. Connect the unit to a grounded power outlet and turn the unit on.

6. Connect a 50: BNC-termination impedance to the input INHIB at channel 1.

7. Select channel 1 (CHANNEL).

8. The voltage DVM should display about 0000 ±10;
the current DVM should display about 0000 ±10.

9. Set the input selector switch to MAN.

10. The voltage DVM should display about 500.0;
the current DVM should display about 0000 ±20.

11. Turn the SETPOINT-potentiometer to 0.

12. The output voltage changes from about +500 V to about -500 V.

13. Repeat the test with all the other channels.

14. Switch off the device.

4.4 Output connections

The outputs of the device supply a voltage of higher than 500 V. Connections to the load should
be provided only using connectors and cables with appropriate voltage rating.
Do not mate or unmate the output connector unless the device is switched off!

4.5 Ventilation Requirements

The HAR12 Amplifier Subrack may be used in rack mounted or bench top applications. In either
case, sufficient space must be allowed for cooling air to reach the ventilation inputs on the front
panels and for the fan exhaust air to exit from the rear of the unit.

The HAR2 may not be covered when in use. The unit must not be used without the provided
rubber-feet mounted to the bottom side.
Sufficient space for ventilation must be kept below and above the unit when the HAR2-W is
mounted.

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4.6 Rack Mounting HAR12

The HAR12 Amplifier Subrack is designed to fit in a standard 19" equipment rack. Use the rack
mount brackets at both sides of the front panel to install the unit into a 19" rack.

4.7 Wall Mounting HAR2-W

178mm

132,50 mm

4x
10,2x7mm

160,20mm

37,7mm

57,1mm

37,7mm

4.8 Periodic Service

The unit does not require periodic service.

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4.9 Troubleshooting

If the unit behaves unusual or erratic, shut the power supply off and check all load,
programming, and monitoring connections and circuits. Correct any problems found and retest
the system. If the unit still fails to operate correctly, check the following points:

 The displays are off although the unit is connected to a working mains outlet and

switched on:
Check the line fuses located in the IEC-inlet. Replace if necessary
(Fuse type: IEC127-2/V, slow, 3.15A, 250V).

 Examine the level of INHIB-Input signals.

Warning

- Before removing any covers or modules, switch off the mains switch and disconnect

the unit from the mains !

- Capacitances connected to the outputs of the device can possibly remain charged to

dangerous voltages, even after switching off the device

- In case of suspected damage or malfunction, the device should immediately be put

out of service, and it should be secured against unintentional or accidental operation.

- Maintenance should be carried out by qualified personnel only.

Please contact the manufacturer before attempting to repair a possibly damaged unit.

5 Technical Specifications

HAR12, HAR12A, HAR12S

Parameter Conditions

Mains voltage 95 – 265 Vac
Mains frequency 47 – 63 Hz
Input current V

Line

=115Vac, full load 1.0 A

RMS

Input current V

Line

=230Vac, full load 0.5 A

RMS

Mains fuses F1, F2 IEC127-2/V, slow, 3.15A,

250V

Protection class I

HAR2, HAR2-W

Parameter Conditions

Supply voltage 22.8 – 25.2 Vdc
Input current VIN=24Vdc, full load 0.6 Adc

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All models

Parameter Conditions

Input voltage range IN -10 V...+10 V
max. Input voltage IN 12 V

RMS

/ ±17VDC
Input impedance IN 50 k
Gain RL = 500 k, control value via IN 50 ±0.2%
Output voltage stability RL = 500 k, control value via IN,

T

amb

< ±10 K, t = 24 h

< ±100 ppm f.s.

Load regulation IL = 0 -> 100% < 100 ppm
Temperature coefficient
Output voltage

RL = 500 k, 10.00 V via IN,
T

amb

< ±10 K

typ. 5 ppm/K

Output voltage range RL = 500 k -500 V…+500 V
Output offset voltage

- HA05B2

- HA05B2_BA

< ±20 mV

< ±30 mV
Load current range -2 mA...+2 mA
Peak output current

- HA05B2

- HA05B2_BA

driving a capacitive load

> ±2 mA

> ±8 mA

Short circuit current < ±4 mA
Power bandwidth

- HA05B2

- HA05B2_BA

R

L

= 500 k, CL = 100 pF

 500 Hz

 15000 Hz

Internal output capacitance

- HA05B2

- HA05B2_BA

1200 pF typ.

100 pF typ.
Ripple / Noise

- HA05B2

- HA05B2_BA

RL = 500 k, CL = 100 pF

 10 mV

PP

/  1 mV

RMS

 30 mVPP /  3 mV

RMS

Scaling V-MON

10 V  500 V ±0.2% f.s.
Scaling I-MON

10 V  2 mA ±0.2% f.s.
Zero point stability I-MON VO=-500 V...+500V,

T

amb

< ±10 K

< ±0.2% f.s.

Accuracy DVM (U/I) < ±0.2% f.s.
Zero point stability DVM (I) VO=-500 V...+500V,

T

amb

< ±10 K

< ±0.2% f.s.

Input voltage INHIB INHIB=LOW -15...1.5 V
Input voltage INHIB INHIB=HIGH 2.4...+15 V
max. Input voltage INHIB 30 V

RMS

/ ±30VDC
Response time INHIB=>HIGH VO<50 V, CL = 100 pF < 10 µs
Response time INHIB=>LOW VO=500 V, CL = 100 pF ca. 2.5 ms

Signal ground and high voltage ground are connected to chassis ground / protective earth.

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5.1 External Connectors

Signals: BNC
Outputs: BNC (HAR12, HAR12A)
Outputs: SHV (HAR12S, HAR2, HAR2-W)

Power line: IEC320-1 (HAR12, HAR12A, HAR12S)
Earth: Bolt M4 (HAR12, HAR12A, HAR12S)
Power supply: 2 pole Combicon Plug (796634-2) (HAR2, HAR2-W)

5.2 Internal Connectors

Internal connectors for HA05B2 plug-in modules (DIN41612, Type F)

Pins Signal

D2 B2 Z2 +540V
D4 B4 Z4 GND
D6 B6 Z6 VO (Amplifier output)
D8 B8 Z8 GND
D10 B10 Z10 -540V
D12 B12 Z12 GND
D14 B14 Z14 n.c.
D16 B16 Z16 n.c.
D18 B18 Z18 Internal connection, do not connect
D20 B20 Z20 Internal connection, do not connect
D22 B22 Z22 Internal connection, do not connect
D24 B24 Z24 Internal connection, do not connect
D26 B26 Z26 Internal connection, do not connect
D28 B28 Z28 Internal connection, do not connect
D30 B30 Z30 +24V
D32 B32 Z32 GND

5.3 Ambient conditions

Parameter Conditions Min. Max. Unit

Ambient temperature

- Operation

- Storage and transportation

0

-25

+40
+70

°C
°C

Relative humidity

- Operation

- Storage and transportation

Not condensing

5
5

80
95

%
%

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5.4 Mechanical Specifications

HAR12

Parameter Value Unit

Depth 365 mm
Width 482 mm
Height 134 mm
Weight 9.5 kg

HAR2

Parameter Value Unit

Depth 264 mm
Width (HAR2/HAR2-W) 141/177 mm
Height (HAR2/HAR2-W) 139/134 mm
Weight 1.9 kg

© hivolt.de GmbH&Co. KG and WME Power Systems GmbH, Hamburg, Germany

10/2016

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6 Declaration Of Conformity

We declare under sole responsibility that the products

Device: High Voltage Amplifiers

Models: HAR12S
equipped with amplifier modules type HA05B2

HAR2
equipped with amplifier modules type HA05B2

are in accordance with the following European directives:

Low Voltage Directive 2006/95/EG
EMC Directive 2004/108/EG

and comply with the following European standards:

EN 61010-1:2010 Safety requirements for electrical equipment for

measurement, control, and laboratory use -
Part 1: General requirements

EN 61326-1:2013 Electrical equipment for measurement, control and

laboratory use -
EMC requirements - Part 1: General requirements

Classification: Group 1, Class B

Manufacturer:

WME Power Systems GmbH

Oehleckerring 40
D-22419 Hamburg

2016-10-04

Wulf Müller
Managing Director

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EG-Konformitätserklärung

Hiermit erklären wir, dass die Bauart der nachfolgend bezeichneten Gerätefamilie in der von uns
in den Verkehr gebrachten Ausführung den wesentlichen Anforderungen der unten genannten
EG-Richtlinien entspricht.

Bezeichnung: Hochspannungsverstärker

Typen: HAR12S
ausgerüstet mit Verstärkermodulen Typ HA05B2

HAR2
ausgerüstet mit Verstärkermodulen Typ HA05B2

Einschlägige Richtlinien:

Niederspannungsrichtlinie 2014/35/EU
EMV-Richtlinie 2014/30/EU

Folgende Normen wurden zur Beurteilung der Geräte hinsichtlich der oben genannten
Richtlinien herangezogen:

EN 61010-1:2010 Sicherheitsbestimmungen für elektrische Mess-, Steuer-,

Regel- und Laborgeräte
Teil 1: Allgemeine Anforderungen

EN 61326-1:2013 Elektrische Mess-, Steuer-, Regel- und Laborgeräte –

EMV-Anforderungen – Teil 1: Allgemeine Anforderungen

Klassifizierung: Gruppe 1, Klasse B

Hersteller:

WME Power Systems GmbH

Oehleckerring 40
D-22419 Hamburg

2016-10-04

Wulf Müller
Geschäftsführer