Datasheet

The HHZ control relay controls frequency variations on 50 or 60 Hz networks.
It can be used to monitor under and overfrequency, by setting two independent thresholds. It has two relay outputs: one per threshold.
Set the selector switch to the 50 or 60 Hz frequency of the network being monitored, select with or without memory mode. The switch position, and hence the operating mode, is read by the
product on energisation.
If the switch is set to a non-conforming position on energisation, the product goes into fault mode, the output relay stays open and the LEDs flash to signal the position error.
If the switch position changes while the unit is operating, all the LEDs flash but the product continues to work normally with the function selected on energisation prior to the change of position.
The LEDs return to their normal state if the switch is reset to its initial position defined before the last energisation.
The relay monitors its own supply voltage.
The over and underfrequency threshold values are set using two potentiometers, graduated with the drift value of the frequency to be monitored.
A x1/x2 switch can be used to double the control scale. The hysteresis is set at 0.3 Hz.
When the unit is powered up with a measured fault, the relay stays open.
If the frequency of the controlled voltage exceeds the preset overfrequency threshold for longer than the time set on the front face (0.1 to 10 s), the corresponding output relay opens and its LED
is extinguished. During the time delay, this LED flashes.
Once the frequency falls below the value of the threshold minus the hysteresis, the relay closes instantly.
If the frequency of the controlled voltage falls below the underfrequency threshold for longer than the time set on the front face (0.1 to 10 s), the corresponding output relay opens and its LED is
extinguished. During the time delay, this LED flashes.
Once the frequency rises above the threshold value plus the hysteresis, the relay closes instantly.
Max. tightening torques IEC/EN 60947 -1
0,6→1Nm/5,3→8,8Lbf.In
Operating temperature IEC/EN 60068 -2
- 20→+50°C
Storage temperature IEC/EN 60068 -2
- 40→+70°C
Humidity IEC/EN 60068 -2-30
2 x 24 hr cycle 95% RH max. without condensation 55°C
Vibrations according to IEC/EN60068 -2-6
10→150Hz,A=0.035mm
Shocks IEC/EN 60068 -2-6
5 g
Standards
Marking
CE (LVD) 73/23/EEC - EMC 89/336/EEC
Product standard
NF EN 60255 - 6 / IEC 60255 - 6 / UL 508 / CSA C22.2 N°14
Electromagnetic compatibility
Immunity EN 61000 -6- 2/IEC 61000 -6-2
Emission EN 61000 -6- 4/EN 61000 -6-3
IEC 61000 -6- 4/IEC 61000 -6-3
Emission EN 55022 class B
Certifications
UL, CSA, GL
Conformity with environmental directives
RoHS, WEEE
Description
Code
Removable sealable cover for 35 mm casing
84800001
Dimension Diagram : HHZ
:
: HHZ - Under and overfrequency - without latching
HHZ - Under and overfrequency - without latching
N
o
Legend
1
High threshold
2
Low threshold
3
Relay R1
4
Relay R2
5
Hysteresis
6
Frequency
Unless otherwise specified, the characteristics given are applicable to all or part of the product range selected
13/03/2012 www.crouzet.com