The OEM offices, workshop and warehouse will be closed for the Christmas period. See our full closing times and last order details.
CROUZET CONTROL
The HHZ control relay monitors frequency variations in 50-60 Hz power networks. Both under- and over-frequencies can be detected by setting two independent limit values. It has two relay outputs, one for each limit value. The switch on the front is set to either 50 or 60 Hz and whether with memory or without memory is preferred. If with memory is selected, the supply voltage must be switched off to restart the relay. The switch position and consequently the relay's function mode is detected when the supply voltage is switched on. If the switch is in an incorrect position when the power is switched on, the component enters error mode. The output remains unaffected and the LED indication flashes to indicate the incorrect position. If the switch position is changed during operation, all LEDs begin to flash but the relay will continue to function normally with the frequency set that was at the most recent power connection. The relay monitors its own operating voltage. The limit value for under-/over-frequency is set with two potentiometers that are scaled based on how much the network frequency may deviate from the set value. There is also a switch that can be used to double the control range. The time delay (Tt), which is adjustable between 0.1 and 10 s. is used to ignore temporary network disturbances. When the time delay is active, either R1 or R2 flashes for a set period. The control relay has a static hysteresis of 0.3 Hz. If the power is switched on with a measured fault, the relay remains unaffected. Green LED (Un) indicates supply voltage OK. Yellow LED (R) indicates active relay output.
| Approvals | CE, CSA, GL, RoHS, UL |
|---|---|
| Breaking capacity | 5A, 250V AC/DC |
| IP class connection | IP20 |
| IP class housing | IP30 |
| Lower limit | +2 - -10 Hz |
| Output | 2x Relay |
| Storage temperature max | 70 °C |
| Storage temperature min | -40 °C |
| Supply voltage | 120-277V AC |
|---|---|
| Temperature operational max | 50 °C |
| Temperature operational min | -20 °C |
| Time delay startup | 0,5 s |
| Time delay when exceeding the limit value | 0,1-10s |
| Upper limit | -2 - 10 Hz |
| Weight | 100 g |
The HHZ control relay monitors frequency variations in 50-60 Hz power networks. Both under- and over-frequencies can be detected by setting two independent limit values. It has two relay outputs, one for each limit value. The switch on the front is set to either 50 or 60 Hz and whether with memory or without memory is preferred. If with memory is selected, the supply voltage must be switched off to restart the relay. The switch position and consequently the relay's function mode is detected when the supply voltage is switched on. If the switch is in an incorrect position when the power is switched on, the component enters error mode. The output remains unaffected and the LED indication flashes to indicate the incorrect position. If the switch position is changed during operation, all LEDs begin to flash but the relay will continue to function normally with the frequency set that was at the most recent power connection. The relay monitors its own operating voltage. The limit value for under-/over-frequency is set with two potentiometers that are scaled based on how much the network frequency may deviate from the set value. There is also a switch that can be used to double the control range. The time delay (Tt), which is adjustable between 0.1 and 10 s. is used to ignore temporary network disturbances. When the time delay is active, either R1 or R2 flashes for a set period. The control relay has a static hysteresis of 0.3 Hz. If the power is switched on with a measured fault, the relay remains unaffected. Green LED (Un) indicates supply voltage OK. Yellow LED (R) indicates active relay output.
This blog talks all things DC circuit protection including the key components: electronic circuit breakers, fuses and current monitoring devices. As well as how to choose the right protection.
Did you get a chance to visit IATECH at The Leicester Marriott Hotel? We had over 33 exhibitors and 8 fantastic Tech Talks throughout the day, Read all about the day, here.
To help experience the capabilities of Z+F machines first-hand, we provide an in-depth demonstration and workshop. These sessions will show the machines in action and allow you to understand their features and gain valuable insight into their operation and benefits.
We are thrilled to announce the launch of IATECH, THe Industrial Automation Technology expo at Leicester Marriott Hotel on 23rd October. The ultimate platform for showcasing our extensive product range and broad business areas, featuring over 50 leading suppliers under one roof!
The specialist vehicle industry can include automotive and EV, heavy vehicles such as agriculture and rail, and marine. This email takes you through some of the various products we offer for specialist vehicle applications.
This blog post delves into the key components, current trends, and best practices in power distribution, illustrating the significant impact these systems have on our daily operations and long-term energy strategies.
